repos/blastem: vdp.c annotate

annotate vdp.c @ 705:ce4046476abc

Add description of cd register value to vr debugger command

author	Michael Pavone <pavone@retrodev.com>
date	Wed, 13 May 2015 19:19:43 -0700
parents	d8a1fdec68fc
children	61faa298af07

rev	line source
467 140af5509ce7 Added copyright notice to source files and added GPL license text in COPYING Mike Pavone <pavone@retrodev.com> parents: 462 diff changeset	1 /*
140af5509ce7 Added copyright notice to source files and added GPL license text in COPYING Mike Pavone <pavone@retrodev.com> parents: 462 diff changeset	2 Copyright 2013 Michael Pavone
470 541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM. Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	3 This file is part of BlastEm.
467 140af5509ce7 Added copyright notice to source files and added GPL license text in COPYING Mike Pavone <pavone@retrodev.com> parents: 462 diff changeset	4 BlastEm is free software distributed under the terms of the GNU General Public License version 3 or greater. See COPYING for full license text.
140af5509ce7 Added copyright notice to source files and added GPL license text in COPYING Mike Pavone <pavone@retrodev.com> parents: 462 diff changeset	5 */
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	6 #include "vdp.h"
75 108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	7 #include "blastem.h"
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	8 #include <stdlib.h>
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	9 #include <string.h>
426 add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	10 #include "render.h"
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	11
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	12 #define NTSC_INACTIVE_START 224
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	13 #define PAL_INACTIVE_START 240
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	14 #define BUF_BIT_PRIORITY 0x40
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	15 #define MAP_BIT_PRIORITY 0x8000
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	16 #define MAP_BIT_H_FLIP 0x800
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	17 #define MAP_BIT_V_FLIP 0x1000
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	18
39 3c69319269ef Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should Mike Pavone <pavone@retrodev.com> parents: 38 diff changeset	19 #define SCROLL_BUFFER_SIZE 32
436 e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	20 #define SCROLL_BUFFER_MASK (SCROLL_BUFFER_SIZE-1)
e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	21 #define SCROLL_BUFFER_DRAW (SCROLL_BUFFER_SIZE/2)
39 3c69319269ef Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should Mike Pavone <pavone@retrodev.com> parents: 38 diff changeset	22
328 bf7ed23efa40 Fewer magic numbers in the VDP core for the win Mike Pavone <pavone@retrodev.com> parents: 327 diff changeset	23 #define MCLKS_SLOT_H40 16
bf7ed23efa40 Fewer magic numbers in the VDP core for the win Mike Pavone <pavone@retrodev.com> parents: 327 diff changeset	24 #define MCLKS_SLOT_H32 20
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	25 #define VINT_SLOT_H40 4 //21 slots before HSYNC, 16 during, 10 after
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	26 #define VINT_SLOT_H32 23 //33 slots before HSYNC, 20 during, 7 after TODO: confirm final number
697 7f96bd1cb1be Sync fixes and logging to fix more sync issues Michael Pavone <pavone@retrodev.com> parents: 680 diff changeset	27 #define HSYNC_SLOT_H40 234
7f96bd1cb1be Sync fixes and logging to fix more sync issues Michael Pavone <pavone@retrodev.com> parents: 680 diff changeset	28 #define HSYNC_END_H40 (HSYNC_SLOT_H40+17)
331 de17e0352f27 Fixup VINT cycle and HBLANK flag for the previous timing fixes Mike Pavone <pavone@retrodev.com> parents: 330 diff changeset	29 #define HSYNC_END_H32 (33 * MCLKS_SLOT_H32)
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	30 #define HBLANK_START_H40 178 //should be 179 according to Nemesis, but 178 seems to fit slightly better with my test ROM results
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	31 #define HBLANK_END_H40 0 //should be 5.5 according to Nemesis, but 0 seems to fit better with my test ROM results
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	32 #define HBLANK_START_H32 233 //should be 147 according to Nemesis which is very different from my test ROM result
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	33 #define HBLANK_END_H32 0 //should be 5 according to Nemesis, but 0 seems to fit better with my test ROM results
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	34 #define LINE_CHANGE_H40 165
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	35 #define LINE_CHANGE_H32 132
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	36 #define FIFO_LATENCY 3
328 bf7ed23efa40 Fewer magic numbers in the VDP core for the win Mike Pavone <pavone@retrodev.com> parents: 327 diff changeset	37
426 add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	38 int32_t color_map[1 << 12];
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	39 uint8_t levels[] = {0, 27, 49, 71, 87, 103, 119, 130, 146, 157, 174, 190, 206, 228, 255};
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	40
437 afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	41 uint8_t debug_base[][3] = {
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	42 {127, 127, 127}, //BG
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	43 {0, 0, 127}, //A
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	44 {127, 0, 0}, //Window
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	45 {0, 127, 0}, //B
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	46 {127, 0, 127} //Sprites
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	47 };
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	48
426 add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	49 uint8_t color_map_init_done;
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	50
623 66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	51 void init_vdp_context(vdp_context * context, uint8_t region_pal)
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	52 {
58 a6a19c45d358 Properly zero-init all VDP buffers. Comment out some debug printfs. Mike Pavone <pavone@retrodev.com> parents: 56 diff changeset	53 memset(context, 0, sizeof(*context));
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	54 context->vdpmem = malloc(VRAM_SIZE);
58 a6a19c45d358 Properly zero-init all VDP buffers. Comment out some debug printfs. Mike Pavone <pavone@retrodev.com> parents: 56 diff changeset	55 memset(context->vdpmem, 0, VRAM_SIZE);
505 b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	56 /*
488 32f053ad9b02 Basic OpenGL rendering is working Mike Pavone <pavone@retrodev.com> parents: 481 diff changeset	57 */
505 b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	58 if (headless) {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	59 context->oddbuf = context->framebuf = malloc(FRAMEBUF_ENTRIES * (32 / 8));
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	60 memset(context->framebuf, 0, FRAMEBUF_ENTRIES * (32 / 8));
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	61 context->evenbuf = malloc(FRAMEBUF_ENTRIES * (32 / 8));
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	62 memset(context->evenbuf, 0, FRAMEBUF_ENTRIES * (32 / 8));
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	63 context->b32 = 1;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	64 } else {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	65 render_alloc_surfaces(context);
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	66 context->b32 = render_depth() == 32;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	67 }
488 32f053ad9b02 Basic OpenGL rendering is working Mike Pavone <pavone@retrodev.com> parents: 481 diff changeset	68 context->framebuf = context->oddbuf;
39 3c69319269ef Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should Mike Pavone <pavone@retrodev.com> parents: 38 diff changeset	69 context->linebuf = malloc(LINEBUF_SIZE + SCROLL_BUFFER_SIZE*2);
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	70 memset(context->linebuf, 0, LINEBUF_SIZE + SCROLL_BUFFER_SIZE*2);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	71 context->tmp_buf_a = context->linebuf + LINEBUF_SIZE;
39 3c69319269ef Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should Mike Pavone <pavone@retrodev.com> parents: 38 diff changeset	72 context->tmp_buf_b = context->tmp_buf_a + SCROLL_BUFFER_SIZE;
26 a7c2b92d8056 Fix management of context->sprite_draws so the sprite layer only draws when it should Mike Pavone <pavone@retrodev.com> parents: 25 diff changeset	73 context->sprite_draws = MAX_DRAWS;
471 f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	74 context->fifo_write = 0;
f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	75 context->fifo_read = -1;
505 b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	76
426 add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	77 if (!color_map_init_done) {
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	78 uint8_t b,g,r;
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	79 for (uint16_t color = 0; color < (1 << 12); color++) {
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	80 if (color & FBUF_SHADOW) {
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	81 b = levels[(color >> 9) & 0x7];
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	82 g = levels[(color >> 5) & 0x7];
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	83 r = levels[(color >> 1) & 0x7];
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	84 } else if(color & FBUF_HILIGHT) {
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	85 b = levels[((color >> 9) & 0x7) + 7];
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	86 g = levels[((color >> 5) & 0x7) + 7];
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	87 r = levels[((color >> 1) & 0x7) + 7];
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	88 } else {
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	89 b = levels[(color >> 8) & 0xE];
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	90 g = levels[(color >> 4) & 0xE];
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	91 r = levels[color & 0xE];
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	92 }
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	93 color_map[color] = render_map_color(r, g, b);
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	94 }
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	95 color_map_init_done = 1;
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	96 }
437 afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	97 for (uint8_t color = 0; color < (1 << (3 + 1 + 1 + 1)); color++)
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	98 {
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	99 uint8_t src = color & DBG_SRC_MASK;
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	100 if (src > DBG_SRC_S) {
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	101 context->debugcolors[color] = 0;
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	102 } else {
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	103 uint8_t r,g,b;
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	104 b = debug_base[src][0];
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	105 g = debug_base[src][1];
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	106 r = debug_base[src][2];
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	107 if (color & DBG_PRIORITY)
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	108 {
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	109 if (b) {
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	110 b += 48;
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	111 }
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	112 if (g) {
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	113 g += 48;
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	114 }
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	115 if (r) {
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	116 r += 48;
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	117 }
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	118 }
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	119 if (color & DBG_SHADOW) {
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	120 b /= 2;
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	121 g /= 2;
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	122 r /=2 ;
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	123 }
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	124 if (color & DBG_HILIGHT) {
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	125 if (b) {
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	126 b += 72;
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	127 }
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	128 if (g) {
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	129 g += 72;
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	130 }
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	131 if (r) {
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	132 r += 72;
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	133 }
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	134 }
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	135 context->debugcolors[color] = render_map_color(r, g, b);
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	136 }
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	137 }
623 66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	138 if (region_pal) {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	139 context->flags2 \|= FLAG2_REGION_PAL;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	140 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	141 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	142
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	143 int is_refresh(vdp_context * context, uint32_t slot)
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	144 {
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	145 if (context->regs[REG_MODE_4] & BIT_H40) {
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	146 return slot == 250 \|\| slot == 26 \|\| slot == 59 \|\| slot == 90 \|\| slot == 122 \|\| slot == 154;
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	147 } else {
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	148 //TODO: Figure out which slots are refresh when display is off in 32-cell mode
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	149 //These numbers are guesses based on H40 numbers
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	150 return slot == 243 \|\| slot == 19 \|\| slot == 51 \|\| slot == 83 \|\| slot == 115;
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	151 //The numbers below are the refresh slots during active display
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	152 //return (slot == 29 \|\| slot == 61 \|\| slot == 93 \|\| slot == 125);
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	153 }
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	154 }
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	155
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	156 void render_sprite_cells(vdp_context * context)
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	157 {
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	158 if (context->cur_slot >= context->sprite_draws) {
72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	159 sprite_draw * d = context->sprite_draw_list + context->cur_slot;
450 3758bcdae5de Fix bug that caused a DMA fill to start after another DMA operation completed if the FIFO is not empty Mike Pavone <pavone@retrodev.com> parents: 438 diff changeset	160
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	161 uint16_t dir;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	162 int16_t x;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	163 if (d->h_flip) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	164 x = d->x_pos + 7;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	165 dir = -1;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	166 } else {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	167 x = d->x_pos;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	168 dir = 1;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	169 }
27 aa1c47fab3f1 Fix sprite transparency for overlapping sprites Mike Pavone <pavone@retrodev.com> parents: 26 diff changeset	170 //printf("Draw Slot %d of %d, Rendering sprite cell from %X to x: %d\n", context->cur_slot, context->sprite_draws, d->address, x);
26 a7c2b92d8056 Fix management of context->sprite_draws so the sprite layer only draws when it should Mike Pavone <pavone@retrodev.com> parents: 25 diff changeset	171 context->cur_slot--;
143 e5487ef04619 Fix infinite loop bug in sprite rendering Mike Pavone <pavone@retrodev.com> parents: 142 diff changeset	172 for (uint16_t address = d->address; address != ((d->address+4) & 0xFFFF); address++) {
27 aa1c47fab3f1 Fix sprite transparency for overlapping sprites Mike Pavone <pavone@retrodev.com> parents: 26 diff changeset	173 if (x >= 0 && x < 320 && !(context->linebuf[x] & 0xF)) {
494 8ac0eb05642c Initial implementation of sprite overflow and sprite collision status register flags Mike Pavone <pavone@retrodev.com> parents: 481 diff changeset	174 if (context->linebuf[x] && (context->vdpmem[address] >> 4)) {
8ac0eb05642c Initial implementation of sprite overflow and sprite collision status register flags Mike Pavone <pavone@retrodev.com> parents: 481 diff changeset	175 context->flags2 \|= FLAG2_SPRITE_COLLIDE;
8ac0eb05642c Initial implementation of sprite overflow and sprite collision status register flags Mike Pavone <pavone@retrodev.com> parents: 481 diff changeset	176 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	177 context->linebuf[x] = (context->vdpmem[address] >> 4) \| d->pal_priority;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	178 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	179 x += dir;
27 aa1c47fab3f1 Fix sprite transparency for overlapping sprites Mike Pavone <pavone@retrodev.com> parents: 26 diff changeset	180 if (x >= 0 && x < 320 && !(context->linebuf[x] & 0xF)) {
494 8ac0eb05642c Initial implementation of sprite overflow and sprite collision status register flags Mike Pavone <pavone@retrodev.com> parents: 481 diff changeset	181 if (context->linebuf[x] && (context->vdpmem[address] & 0xF)) {
8ac0eb05642c Initial implementation of sprite overflow and sprite collision status register flags Mike Pavone <pavone@retrodev.com> parents: 481 diff changeset	182 context->flags2 \|= FLAG2_SPRITE_COLLIDE;
8ac0eb05642c Initial implementation of sprite overflow and sprite collision status register flags Mike Pavone <pavone@retrodev.com> parents: 481 diff changeset	183 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	184 context->linebuf[x] = (context->vdpmem[address] & 0xF) \| d->pal_priority;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	185 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	186 x += dir;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	187 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	188 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	189 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	190
322 8e2fa485c0f2 Remove z80_ram reference in SDL renderer to get stateview compiling again. Print out the sprite list in stateview. Mike Pavone <pavone@retrodev.com> parents: 318 diff changeset	191 void vdp_print_sprite_table(vdp_context * context)
8e2fa485c0f2 Remove z80_ram reference in SDL renderer to get stateview compiling again. Print out the sprite list in stateview. Mike Pavone <pavone@retrodev.com> parents: 318 diff changeset	192 {
8e2fa485c0f2 Remove z80_ram reference in SDL renderer to get stateview compiling again. Print out the sprite list in stateview. Mike Pavone <pavone@retrodev.com> parents: 318 diff changeset	193 uint16_t sat_address = (context->regs[REG_SAT] & 0x7F) << 9;
8e2fa485c0f2 Remove z80_ram reference in SDL renderer to get stateview compiling again. Print out the sprite list in stateview. Mike Pavone <pavone@retrodev.com> parents: 318 diff changeset	194 uint16_t current_index = 0;
8e2fa485c0f2 Remove z80_ram reference in SDL renderer to get stateview compiling again. Print out the sprite list in stateview. Mike Pavone <pavone@retrodev.com> parents: 318 diff changeset	195 uint8_t count = 0;
8e2fa485c0f2 Remove z80_ram reference in SDL renderer to get stateview compiling again. Print out the sprite list in stateview. Mike Pavone <pavone@retrodev.com> parents: 318 diff changeset	196 do {
8e2fa485c0f2 Remove z80_ram reference in SDL renderer to get stateview compiling again. Print out the sprite list in stateview. Mike Pavone <pavone@retrodev.com> parents: 318 diff changeset	197 uint16_t address = current_index * 8 + sat_address;
8e2fa485c0f2 Remove z80_ram reference in SDL renderer to get stateview compiling again. Print out the sprite list in stateview. Mike Pavone <pavone@retrodev.com> parents: 318 diff changeset	198 uint8_t height = ((context->vdpmem[address+2] & 0x3) + 1) * 8;
8e2fa485c0f2 Remove z80_ram reference in SDL renderer to get stateview compiling again. Print out the sprite list in stateview. Mike Pavone <pavone@retrodev.com> parents: 318 diff changeset	199 uint8_t width = (((context->vdpmem[address+2] >> 2) & 0x3) + 1) * 8;
8e2fa485c0f2 Remove z80_ram reference in SDL renderer to get stateview compiling again. Print out the sprite list in stateview. Mike Pavone <pavone@retrodev.com> parents: 318 diff changeset	200 int16_t y = ((context->vdpmem[address] & 0x3) << 8 \| context->vdpmem[address+1]) & 0x1FF;
323 8c01b4154480 Properly mask sprite X and Y coordinates Mike Pavone <pavone@retrodev.com> parents: 322 diff changeset	201 int16_t x = ((context->vdpmem[address+ 6] & 0x3) << 8 \| context->vdpmem[address + 7]) & 0x1FF;
322 8e2fa485c0f2 Remove z80_ram reference in SDL renderer to get stateview compiling again. Print out the sprite list in stateview. Mike Pavone <pavone@retrodev.com> parents: 318 diff changeset	202 uint16_t link = context->vdpmem[address+3] & 0x7F;
323 8c01b4154480 Properly mask sprite X and Y coordinates Mike Pavone <pavone@retrodev.com> parents: 322 diff changeset	203 uint8_t pal = context->vdpmem[address + 4] >> 5 & 0x3;
8c01b4154480 Properly mask sprite X and Y coordinates Mike Pavone <pavone@retrodev.com> parents: 322 diff changeset	204 uint8_t pri = context->vdpmem[address + 4] >> 7;
450 3758bcdae5de Fix bug that caused a DMA fill to start after another DMA operation completed if the FIFO is not empty Mike Pavone <pavone@retrodev.com> parents: 438 diff changeset	205 uint16_t pattern = ((context->vdpmem[address + 4] << 8 \| context->vdpmem[address + 5]) & 0x7FF) << 5;
515 1495179d6737 Initial GDB remote debugging support. Lacks some features, but breakpoints and basic inspection of registers and memory work. Mike Pavone <pavone@retrodev.com> parents: 505 diff changeset	206 printf("Sprite %d: X=%d(%d), Y=%d(%d), Width=%u, Height=%u, Link=%u, Pal=%u, Pri=%u, Pat=%X\n", current_index, x, x-128, y, y-128, width, height, link, pal, pri, pattern);
322 8e2fa485c0f2 Remove z80_ram reference in SDL renderer to get stateview compiling again. Print out the sprite list in stateview. Mike Pavone <pavone@retrodev.com> parents: 318 diff changeset	207 current_index = link;
8e2fa485c0f2 Remove z80_ram reference in SDL renderer to get stateview compiling again. Print out the sprite list in stateview. Mike Pavone <pavone@retrodev.com> parents: 318 diff changeset	208 count++;
8e2fa485c0f2 Remove z80_ram reference in SDL renderer to get stateview compiling again. Print out the sprite list in stateview. Mike Pavone <pavone@retrodev.com> parents: 318 diff changeset	209 } while (current_index != 0 && count < 80);
8e2fa485c0f2 Remove z80_ram reference in SDL renderer to get stateview compiling again. Print out the sprite list in stateview. Mike Pavone <pavone@retrodev.com> parents: 318 diff changeset	210 }
8e2fa485c0f2 Remove z80_ram reference in SDL renderer to get stateview compiling again. Print out the sprite list in stateview. Mike Pavone <pavone@retrodev.com> parents: 318 diff changeset	211
705 ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	212 #define VRAM_READ 0 //0000
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	213 #define VRAM_WRITE 1 //0001
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	214 //2 would trigger register write 0010
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	215 #define CRAM_WRITE 3 //0011
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	216 #define VSRAM_READ 4 //0100
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	217 #define VSRAM_WRITE 5//0101
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	218 //6 would trigger regsiter write 0110
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	219 //7 is a mystery
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	220 #define CRAM_READ 8 //1000
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	221 //9 is also a mystery //1001
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	222 //A would trigger register write 1010
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	223 //B is a mystery 1011
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	224 #define VRAM_READ8 0xC //1100
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	225 //D is a mystery 1101
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	226 //E would trigger register write 1110
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	227 //F is a mystery 1111
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	228 #define DMA_START 0x20
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	229
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	230 const char * cd_name(uint8_t cd)
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	231 {
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	232 switch (cd & 0xF)
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	233 {
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	234 case VRAM_READ:
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	235 return "VRAM read";
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	236 case VRAM_WRITE:
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	237 return "VRAM write";
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	238 case CRAM_WRITE:
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	239 return "CRAM write";
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	240 case VSRAM_READ:
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	241 return "VSRAM read";
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	242 case VSRAM_WRITE:
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	243 return "VSRAM write";
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	244 case VRAM_READ8:
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	245 return "VRAM read (undocumented 8-bit mode)";
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	246 default:
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	247 return "invalid";
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	248 }
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	249 }
ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	250
327 1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	251 void vdp_print_reg_explain(vdp_context * context)
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	252 {
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	253 char * hscroll[] = {"full", "7-line", "cell", "line"};
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	254 printf("Mode Group\n"
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	255 "00: %.2X \| H-ints %s, Pal Select %d, HVC latch %s, Display gen %s\n"
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	256 "01: %.2X \| Display %s, V-ints %s, Height: %d, Mode %d\n"
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	257 "0B: %.2X \| E-ints %s, V-Scroll: %s, H-Scroll: %s\n"
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	258 "0C: %.2X \| Width: %d, Shadow/Highlight: %s\n",
450 3758bcdae5de Fix bug that caused a DMA fill to start after another DMA operation completed if the FIFO is not empty Mike Pavone <pavone@retrodev.com> parents: 438 diff changeset	259 context->regs[REG_MODE_1], context->regs[REG_MODE_1] & BIT_HINT_EN ? "enabled" : "disabled", context->regs[REG_MODE_1] & BIT_PAL_SEL != 0,
327 1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	260 context->regs[REG_MODE_1] & BIT_HVC_LATCH ? "enabled" : "disabled", context->regs[REG_MODE_1] & BIT_DISP_DIS ? "disabled" : "enabled",
450 3758bcdae5de Fix bug that caused a DMA fill to start after another DMA operation completed if the FIFO is not empty Mike Pavone <pavone@retrodev.com> parents: 438 diff changeset	261 context->regs[REG_MODE_2], context->regs[REG_MODE_2] & BIT_DISP_EN ? "enabled" : "disabled", context->regs[REG_MODE_2] & BIT_VINT_EN ? "enabled" : "disabled",
327 1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	262 context->regs[REG_MODE_2] & BIT_PAL ? 30 : 28, context->regs[REG_MODE_2] & BIT_MODE_5 ? 5 : 4,
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	263 context->regs[REG_MODE_3], context->regs[REG_MODE_3] & BIT_EINT_EN ? "enabled" : "disabled", context->regs[REG_MODE_3] & BIT_VSCROLL ? "2 cell" : "full",
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	264 hscroll[context->regs[REG_MODE_3] & 0x3],
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	265 context->regs[REG_MODE_4], context->regs[REG_MODE_4] & BIT_H40 ? 40 : 32, context->regs[REG_MODE_4] & BIT_HILIGHT ? "enabled" : "disabled");
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	266 printf("\nTable Group\n"
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	267 "02: %.2X \| Scroll A Name Table: $%.4X\n"
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	268 "03: %.2X \| Window Name Table: $%.4X\n"
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	269 "04: %.2X \| Scroll B Name Table: $%.4X\n"
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	270 "05: %.2X \| Sprite Attribute Table: $%.4X\n"
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	271 "0D: %.2X \| HScroll Data Table: $%.4X\n",
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	272 context->regs[REG_SCROLL_A], (context->regs[REG_SCROLL_A] & 0x38) << 10,
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	273 context->regs[REG_WINDOW], (context->regs[REG_WINDOW] & (context->regs[REG_MODE_4] & BIT_H40 ? 0x3C : 0x3E)) << 10,
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	274 context->regs[REG_SCROLL_B], (context->regs[REG_SCROLL_B] & 0x7) << 13,
621 5196333b37a6 Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes. Michael Pavone <pavone@retrodev.com> parents: 515 diff changeset	275 context->regs[REG_SAT], (context->regs[REG_SAT] & (context->regs[REG_MODE_4] & BIT_H40 ? 0x7E : 0x7F)) << 9,
5196333b37a6 Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes. Michael Pavone <pavone@retrodev.com> parents: 515 diff changeset	276 context->regs[REG_HSCROLL], (context->regs[REG_HSCROLL] & 0x3F) << 10);
327 1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	277 char * sizes[] = {"32", "64", "invalid", "128"};
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	278 printf("\nMisc Group\n"
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	279 "07: %.2X \| Backdrop Color: $%X\n"
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	280 "0A: %.2X \| H-Int Counter: %u\n"
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	281 "0F: %.2X \| Auto-increment: $%X\n"
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	282 "10: %.2X \| Scroll A/B Size: %sx%s\n",
505 b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	283 context->regs[REG_BG_COLOR], context->regs[REG_BG_COLOR],
450 3758bcdae5de Fix bug that caused a DMA fill to start after another DMA operation completed if the FIFO is not empty Mike Pavone <pavone@retrodev.com> parents: 438 diff changeset	284 context->regs[REG_HINT], context->regs[REG_HINT],
327 1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	285 context->regs[REG_AUTOINC], context->regs[REG_AUTOINC],
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	286 context->regs[REG_SCROLL], sizes[context->regs[REG_SCROLL] & 0x3], sizes[context->regs[REG_SCROLL] >> 4 & 0x3]);
621 5196333b37a6 Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes. Michael Pavone <pavone@retrodev.com> parents: 515 diff changeset	287 char * src_types[] = {"68K", "68K", "Copy", "Fill"};
5196333b37a6 Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes. Michael Pavone <pavone@retrodev.com> parents: 515 diff changeset	288 printf("\nDMA Group\n"
5196333b37a6 Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes. Michael Pavone <pavone@retrodev.com> parents: 515 diff changeset	289 "13: %.2X \|\n"
5196333b37a6 Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes. Michael Pavone <pavone@retrodev.com> parents: 515 diff changeset	290 "14: %.2X \| DMA Length: $%.4X words\n"
5196333b37a6 Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes. Michael Pavone <pavone@retrodev.com> parents: 515 diff changeset	291 "15: %.2X \|\n"
5196333b37a6 Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes. Michael Pavone <pavone@retrodev.com> parents: 515 diff changeset	292 "16: %.2X \|\n"
5196333b37a6 Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes. Michael Pavone <pavone@retrodev.com> parents: 515 diff changeset	293 "17: %.2X \| DMA Source Address: $%.6X, Type: %s\n",
5196333b37a6 Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes. Michael Pavone <pavone@retrodev.com> parents: 515 diff changeset	294 context->regs[REG_DMALEN_L],
5196333b37a6 Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes. Michael Pavone <pavone@retrodev.com> parents: 515 diff changeset	295 context->regs[REG_DMALEN_H], context->regs[REG_DMALEN_H] << 8 \| context->regs[REG_DMALEN_L],
5196333b37a6 Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes. Michael Pavone <pavone@retrodev.com> parents: 515 diff changeset	296 context->regs[REG_DMASRC_L],
5196333b37a6 Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes. Michael Pavone <pavone@retrodev.com> parents: 515 diff changeset	297 context->regs[REG_DMASRC_M],
5196333b37a6 Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes. Michael Pavone <pavone@retrodev.com> parents: 515 diff changeset	298 context->regs[REG_DMASRC_H],
629 9089951a1994 Small fix to display of DMA source address in vr debug command Michael Pavone <pavone@retrodev.com> parents: 624 diff changeset	299 context->regs[REG_DMASRC_H] << 17 \| context->regs[REG_DMASRC_M] << 9 \| context->regs[REG_DMASRC_L] << 1,
621 5196333b37a6 Fix a few values reported by the vr debugger command. Add DMA registers to vr debugger command. Fix horizontal interrupt bug. Slightly more accurate (but still broken) handling of switches between H32 and H40 modes. Michael Pavone <pavone@retrodev.com> parents: 515 diff changeset	300 src_types[context->regs[REG_DMASRC_H] >> 6 & 3]);
438 b3cee2fe690b Add address/cd registers to VDP debug message Mike Pavone <pavone@retrodev.com> parents: 437 diff changeset	301 printf("\nInternal Group\n"
b3cee2fe690b Add address/cd registers to VDP debug message Mike Pavone <pavone@retrodev.com> parents: 437 diff changeset	302 "Address: %X\n"
705 ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	303 "CD: %X - %s\n"
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	304 "Pending: %s\n"
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	305 "VCounter: %d\n"
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	306 "HCounter: %d\n",
705 ce4046476abc Add description of cd register value to vr debugger command Michael Pavone <pavone@retrodev.com> parents: 699 diff changeset	307 context->address, context->cd, cd_name(context->cd), (context->flags & FLAG_PENDING) ? "true" : "false",
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	308 context->vcounter, context->hslot*2);
450 3758bcdae5de Fix bug that caused a DMA fill to start after another DMA operation completed if the FIFO is not empty Mike Pavone <pavone@retrodev.com> parents: 438 diff changeset	309
3758bcdae5de Fix bug that caused a DMA fill to start after another DMA operation completed if the FIFO is not empty Mike Pavone <pavone@retrodev.com> parents: 438 diff changeset	310 //TODO: Window Group, DMA Group
327 1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	311 }
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	312
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	313 void scan_sprite_table(uint32_t line, vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	314 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	315 if (context->sprite_index && context->slot_counter) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	316 line += 1;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	317 line &= 0xFF;
413 36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	318 uint16_t ymask, ymin;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	319 uint8_t height_mult;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	320 if (context->double_res) {
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	321 line *= 2;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	322 if (context->framebuf != context->oddbuf) {
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	323 line++;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	324 }
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	325 ymask = 0x3FF;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	326 ymin = 256;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	327 height_mult = 16;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	328 } else {
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	329 ymask = 0x1FF;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	330 ymin = 128;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	331 height_mult = 8;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	332 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	333 context->sprite_index &= 0x7F;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	334 if (context->regs[REG_MODE_4] & BIT_H40) {
38 898e3d035f42 Implement sprite index >= sprite limit triggers sprite limit behavior Mike Pavone <pavone@retrodev.com> parents: 37 diff changeset	335 if (context->sprite_index >= MAX_SPRITES_FRAME) {
898e3d035f42 Implement sprite index >= sprite limit triggers sprite limit behavior Mike Pavone <pavone@retrodev.com> parents: 37 diff changeset	336 context->sprite_index = 0;
898e3d035f42 Implement sprite index >= sprite limit triggers sprite limit behavior Mike Pavone <pavone@retrodev.com> parents: 37 diff changeset	337 return;
898e3d035f42 Implement sprite index >= sprite limit triggers sprite limit behavior Mike Pavone <pavone@retrodev.com> parents: 37 diff changeset	338 }
898e3d035f42 Implement sprite index >= sprite limit triggers sprite limit behavior Mike Pavone <pavone@retrodev.com> parents: 37 diff changeset	339 } else if(context->sprite_index >= MAX_SPRITES_FRAME_H32) {
898e3d035f42 Implement sprite index >= sprite limit triggers sprite limit behavior Mike Pavone <pavone@retrodev.com> parents: 37 diff changeset	340 context->sprite_index = 0;
898e3d035f42 Implement sprite index >= sprite limit triggers sprite limit behavior Mike Pavone <pavone@retrodev.com> parents: 37 diff changeset	341 return;
898e3d035f42 Implement sprite index >= sprite limit triggers sprite limit behavior Mike Pavone <pavone@retrodev.com> parents: 37 diff changeset	342 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	343 //TODO: Read from SAT cache rather than from VRAM
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	344 uint16_t sat_address = (context->regs[REG_SAT] & 0x7F) << 9;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	345 uint16_t address = context->sprite_index * 8 + sat_address;
413 36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	346 line += ymin;
415 8c60c8c09a0f Fix sprite y mask in interlace mode. Fix framebuffer selection when switching out of interlace mode. Mike Pavone <pavone@retrodev.com> parents: 414 diff changeset	347 uint16_t y = ((context->vdpmem[address] & 0x3) << 8 \| context->vdpmem[address+1]) & ymask;
413 36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	348 uint8_t height = ((context->vdpmem[address+2] & 0x3) + 1) * height_mult;
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	349 //printf("Sprite %d \| y: %d, height: %d\n", context->sprite_index, y, height);
72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	350 if (y <= line && line < (y + height)) {
27 aa1c47fab3f1 Fix sprite transparency for overlapping sprites Mike Pavone <pavone@retrodev.com> parents: 26 diff changeset	351 //printf("Sprite %d at y: %d with height %d is on line %d\n", context->sprite_index, y, height, line);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	352 context->sprite_info_list[--(context->slot_counter)].size = context->vdpmem[address+2];
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	353 context->sprite_info_list[context->slot_counter].index = context->sprite_index;
413 36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	354 context->sprite_info_list[context->slot_counter].y = y-ymin;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	355 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	356 context->sprite_index = context->vdpmem[address+3] & 0x7F;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	357 if (context->sprite_index && context->slot_counter)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	358 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	359 address = context->sprite_index * 8 + sat_address;
415 8c60c8c09a0f Fix sprite y mask in interlace mode. Fix framebuffer selection when switching out of interlace mode. Mike Pavone <pavone@retrodev.com> parents: 414 diff changeset	360 y = ((context->vdpmem[address] & 0x3) << 8 \| context->vdpmem[address+1]) & ymask;
413 36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	361 height = ((context->vdpmem[address+2] & 0x3) + 1) * height_mult;
323 8c01b4154480 Properly mask sprite X and Y coordinates Mike Pavone <pavone@retrodev.com> parents: 322 diff changeset	362 //printf("Sprite %d \| y: %d, height: %d\n", context->sprite_index, y, height);
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	363 if (y <= line && line < (y + height)) {
27 aa1c47fab3f1 Fix sprite transparency for overlapping sprites Mike Pavone <pavone@retrodev.com> parents: 26 diff changeset	364 //printf("Sprite %d at y: %d with height %d is on line %d\n", context->sprite_index, y, height, line);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	365 context->sprite_info_list[--(context->slot_counter)].size = context->vdpmem[address+2];
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	366 context->sprite_info_list[context->slot_counter].index = context->sprite_index;
413 36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	367 context->sprite_info_list[context->slot_counter].y = y-ymin;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	368 }
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	369 context->sprite_index = context->vdpmem[address+3] & 0x7F;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	370 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	371 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	372 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	373
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	374 void read_sprite_x(uint32_t line, vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	375 {
34 0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	376 if (context->cur_slot >= context->slot_counter) {
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	377 if (context->sprite_draws) {
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	378 line += 1;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	379 line &= 0xFF;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	380 //in tiles
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	381 uint8_t width = ((context->sprite_info_list[context->cur_slot].size >> 2) & 0x3) + 1;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	382 //in pixels
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	383 uint8_t height = ((context->sprite_info_list[context->cur_slot].size & 0x3) + 1) * 8;
413 36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	384 if (context->double_res) {
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	385 line *= 2;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	386 if (context->framebuf != context->oddbuf) {
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	387 line++;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	388 }
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	389 height *= 2;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	390 }
34 0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	391 uint16_t att_addr = ((context->regs[REG_SAT] & 0x7F) << 9) + context->sprite_info_list[context->cur_slot].index * 8 + 4;
450 3758bcdae5de Fix bug that caused a DMA fill to start after another DMA operation completed if the FIFO is not empty Mike Pavone <pavone@retrodev.com> parents: 438 diff changeset	392 uint16_t tileinfo = (context->vdpmem[att_addr] << 8) \| context->vdpmem[att_addr+1];
34 0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	393 uint8_t pal_priority = (tileinfo >> 9) & 0x70;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	394 uint8_t row;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	395 if (tileinfo & MAP_BIT_V_FLIP) {
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	396 row = (context->sprite_info_list[context->cur_slot].y + height - 1) - line;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	397 } else {
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	398 row = line-context->sprite_info_list[context->cur_slot].y;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	399 }
413 36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	400 uint16_t address;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	401 if (context->double_res) {
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	402 address = ((tileinfo & 0x3FF) << 6) + row * 4;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	403 } else {
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	404 address = ((tileinfo & 0x7FF) << 5) + row * 4;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	405 }
323 8c01b4154480 Properly mask sprite X and Y coordinates Mike Pavone <pavone@retrodev.com> parents: 322 diff changeset	406 int16_t x = ((context->vdpmem[att_addr+ 2] & 0x3) << 8 \| context->vdpmem[att_addr + 3]) & 0x1FF;
36 04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	407 if (x) {
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	408 context->flags \|= FLAG_CAN_MASK;
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	409 } else if(context->flags & (FLAG_CAN_MASK \| FLAG_DOT_OFLOW)) {
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	410 context->flags \|= FLAG_MASKED;
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	411 }
450 3758bcdae5de Fix bug that caused a DMA fill to start after another DMA operation completed if the FIFO is not empty Mike Pavone <pavone@retrodev.com> parents: 438 diff changeset	412
36 04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	413 context->flags &= ~FLAG_DOT_OFLOW;
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	414 int16_t i;
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	415 if (context->flags & FLAG_MASKED) {
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	416 for (i=0; i < width && context->sprite_draws; i++) {
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	417 --context->sprite_draws;
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	418 context->sprite_draw_list[context->sprite_draws].x_pos = -128;
34 0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	419 }
36 04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	420 } else {
34 0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	421 x -= 128;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	422 int16_t base_x = x;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	423 int16_t dir;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	424 if (tileinfo & MAP_BIT_H_FLIP) {
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	425 x += (width-1) * 8;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	426 dir = -8;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	427 } else {
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	428 dir = 8;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	429 }
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	430 //printf("Sprite %d \| x: %d, y: %d, width: %d, height: %d, pal_priority: %X, row: %d, tile addr: %X\n", context->sprite_info_list[context->cur_slot].index, x, context->sprite_info_list[context->cur_slot].y, width, height, pal_priority, row, address);
35 233c7737c152 Small fix to overflow flag Mike Pavone <pavone@retrodev.com> parents: 34 diff changeset	431 for (i=0; i < width && context->sprite_draws; i++, x += dir) {
34 0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	432 --context->sprite_draws;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	433 context->sprite_draw_list[context->sprite_draws].address = address + i * height * 4;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	434 context->sprite_draw_list[context->sprite_draws].x_pos = x;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	435 context->sprite_draw_list[context->sprite_draws].pal_priority = pal_priority;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	436 context->sprite_draw_list[context->sprite_draws].h_flip = (tileinfo & MAP_BIT_H_FLIP) ? 1 : 0;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	437 }
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	438 }
36 04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	439 if (i < width) {
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	440 context->flags \|= FLAG_DOT_OFLOW;
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	441 }
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	442 context->cur_slot--;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	443 } else {
34 0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	444 context->flags \|= FLAG_DOT_OFLOW;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	445 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	446 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	447 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	448
427 2802318c14e1 Refactor duplicated CRAM writing code and fix a bug in the process Mike Pavone <pavone@retrodev.com> parents: 426 diff changeset	449 void write_cram(vdp_context * context, uint16_t address, uint16_t value)
2802318c14e1 Refactor duplicated CRAM writing code and fix a bug in the process Mike Pavone <pavone@retrodev.com> parents: 426 diff changeset	450 {
2802318c14e1 Refactor duplicated CRAM writing code and fix a bug in the process Mike Pavone <pavone@retrodev.com> parents: 426 diff changeset	451 uint16_t addr = (address/2) & (CRAM_SIZE-1);
2802318c14e1 Refactor duplicated CRAM writing code and fix a bug in the process Mike Pavone <pavone@retrodev.com> parents: 426 diff changeset	452 context->cram[addr] = value;
2802318c14e1 Refactor duplicated CRAM writing code and fix a bug in the process Mike Pavone <pavone@retrodev.com> parents: 426 diff changeset	453 context->colors[addr] = color_map[value & 0xEEE];
2802318c14e1 Refactor duplicated CRAM writing code and fix a bug in the process Mike Pavone <pavone@retrodev.com> parents: 426 diff changeset	454 context->colors[addr + CRAM_SIZE] = color_map[(value & 0xEEE) \| FBUF_SHADOW];
2802318c14e1 Refactor duplicated CRAM writing code and fix a bug in the process Mike Pavone <pavone@retrodev.com> parents: 426 diff changeset	455 context->colors[addr + CRAM_SIZE*2] = color_map[(value & 0xEEE) \| FBUF_HILIGHT];
2802318c14e1 Refactor duplicated CRAM writing code and fix a bug in the process Mike Pavone <pavone@retrodev.com> parents: 426 diff changeset	456 }
2802318c14e1 Refactor duplicated CRAM writing code and fix a bug in the process Mike Pavone <pavone@retrodev.com> parents: 426 diff changeset	457
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	458 void external_slot(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	459 {
471 f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	460 fifo_entry * start = context->fifo + context->fifo_read;
474 e128e55710bd Remove read pending stuff, that had been added in an attempt to fix CRAM/VSRAM undefined bit results. Set number of bits actually saved in VSRAM to 11 Mike Pavone <pavone@retrodev.com> parents: 473 diff changeset	461 /*if (context->flags2 & FLAG2_READ_PENDING) {
470 541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM. Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	462 context->flags2 &= ~FLAG2_READ_PENDING;
541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM. Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	463 context->flags \|= FLAG_UNUSED_SLOT;
541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM. Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	464 return;
474 e128e55710bd Remove read pending stuff, that had been added in an attempt to fix CRAM/VSRAM undefined bit results. Set number of bits actually saved in VSRAM to 11 Mike Pavone <pavone@retrodev.com> parents: 473 diff changeset	465 }*/
471 f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	466 if (context->fifo_read >= 0 && start->cycle <= context->cycles) {
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	467 switch (start->cd & 0xF)
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	468 {
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	469 case VRAM_WRITE:
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	470 if (start->partial) {
471 f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	471 //printf("VRAM Write: %X to %X at %d (line %d, slot %d)\n", start->value, start->address ^ 1, context->cycles, context->cycles/MCLKS_LINE, (context->cycles%MCLKS_LINE)/16);
478 2e4a4188cfb0 Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all. Mike Pavone <pavone@retrodev.com> parents: 477 diff changeset	472 context->vdpmem[start->address ^ 1] = start->partial == 2 ? start->value >> 8 : start->value;
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	473 } else {
471 f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	474 //printf("VRAM Write High: %X to %X at %d (line %d, slot %d)\n", start->value >> 8, start->address, context->cycles, context->cycles/MCLKS_LINE, (context->cycles%MCLKS_LINE)/16);
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	475 context->vdpmem[start->address] = start->value >> 8;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	476 start->partial = 1;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	477 //skip auto-increment and removal of entry from fifo
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	478 return;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	479 }
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	480 break;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	481 case CRAM_WRITE: {
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	482 //printf("CRAM Write \| %X to %X\n", start->value, (start->address/2) & (CRAM_SIZE-1));
479 863e868752cf Implement funny behavior for DMA fill to CRAM and VSRAM. Return VSRAM address 0 for reads to VSRAM at >= 40 Mike Pavone <pavone@retrodev.com> parents: 478 diff changeset	483 write_cram(context, start->address, start->partial == 2 ? context->fifo[context->fifo_write].value : start->value);
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	484 break;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	485 }
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	486 case VSRAM_WRITE:
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	487 if (((start->address/2) & 63) < VSRAM_SIZE) {
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	488 //printf("VSRAM Write: %X to %X\n", start->value, context->address);
479 863e868752cf Implement funny behavior for DMA fill to CRAM and VSRAM. Return VSRAM address 0 for reads to VSRAM at >= 40 Mike Pavone <pavone@retrodev.com> parents: 478 diff changeset	489 context->vsram[(start->address/2) & 63] = start->partial == 2 ? context->fifo[context->fifo_write].value : start->value;
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	490 }
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	491
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	492 break;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	493 }
471 f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	494 context->fifo_read = (context->fifo_read+1) & (FIFO_SIZE-1);
f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	495 if (context->fifo_read == context->fifo_write) {
f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	496 context->fifo_read = -1;
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	497 }
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	498 } else {
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	499 context->flags \|= FLAG_UNUSED_SLOT;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	500 }
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	501 }
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	502
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	503 void run_dma_src(vdp_context * context, uint32_t slot)
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	504 {
75 108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	505 //TODO: Figure out what happens if CD bit 4 is not set in DMA copy mode
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	506 //TODO: Figure out what happens when CD:0-3 is not set to a write mode in DMA operations
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	507 //TODO: Figure out what happens if DMA gets disabled part way through a DMA fill or DMA copy
471 f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	508 if (context->fifo_write == context->fifo_read) {
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	509 return;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	510 }
478 2e4a4188cfb0 Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all. Mike Pavone <pavone@retrodev.com> parents: 477 diff changeset	511 fifo_entry * cur = NULL;
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	512 switch(context->regs[REG_DMASRC_H] & 0xC0)
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	513 {
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	514 //68K -> VDP
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	515 case 0:
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	516 case 0x40:
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	517 if (!slot \|\| !is_refresh(context, slot-1)) {
478 2e4a4188cfb0 Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all. Mike Pavone <pavone@retrodev.com> parents: 477 diff changeset	518 cur = context->fifo + context->fifo_write;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	519 cur->cycle = context->cycles + ((context->regs[REG_MODE_4] & BIT_H40) ? 16 : 20)*FIFO_LATENCY;
478 2e4a4188cfb0 Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all. Mike Pavone <pavone@retrodev.com> parents: 477 diff changeset	520 cur->address = context->address;
2e4a4188cfb0 Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all. Mike Pavone <pavone@retrodev.com> parents: 477 diff changeset	521 cur->value = read_dma_value((context->regs[REG_DMASRC_H] << 16) \| (context->regs[REG_DMASRC_M] << 8) \| context->regs[REG_DMASRC_L]);
2e4a4188cfb0 Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all. Mike Pavone <pavone@retrodev.com> parents: 477 diff changeset	522 cur->cd = context->cd;
2e4a4188cfb0 Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all. Mike Pavone <pavone@retrodev.com> parents: 477 diff changeset	523 cur->partial = 0;
2e4a4188cfb0 Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all. Mike Pavone <pavone@retrodev.com> parents: 477 diff changeset	524 if (context->fifo_read < 0) {
2e4a4188cfb0 Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all. Mike Pavone <pavone@retrodev.com> parents: 477 diff changeset	525 context->fifo_read = context->fifo_write;
2e4a4188cfb0 Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all. Mike Pavone <pavone@retrodev.com> parents: 477 diff changeset	526 }
2e4a4188cfb0 Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all. Mike Pavone <pavone@retrodev.com> parents: 477 diff changeset	527 context->fifo_write = (context->fifo_write + 1) & (FIFO_SIZE-1);
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	528 }
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	529 break;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	530 //Copy
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	531 case 0xC0:
478 2e4a4188cfb0 Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all. Mike Pavone <pavone@retrodev.com> parents: 477 diff changeset	532 if (context->flags & FLAG_UNUSED_SLOT && context->fifo_read < 0) {
2e4a4188cfb0 Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all. Mike Pavone <pavone@retrodev.com> parents: 477 diff changeset	533 //TODO: Fix this to not use the FIFO at all once read-caching is properly implemented
2e4a4188cfb0 Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all. Mike Pavone <pavone@retrodev.com> parents: 477 diff changeset	534 context->fifo_read = (context->fifo_write-1) & (FIFO_SIZE-1);
2e4a4188cfb0 Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all. Mike Pavone <pavone@retrodev.com> parents: 477 diff changeset	535 cur = context->fifo + context->fifo_read;
2e4a4188cfb0 Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all. Mike Pavone <pavone@retrodev.com> parents: 477 diff changeset	536 cur->cycle = context->cycles;
2e4a4188cfb0 Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all. Mike Pavone <pavone@retrodev.com> parents: 477 diff changeset	537 cur->address = context->address;
2e4a4188cfb0 Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all. Mike Pavone <pavone@retrodev.com> parents: 477 diff changeset	538 cur->partial = 1;
2e4a4188cfb0 Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all. Mike Pavone <pavone@retrodev.com> parents: 477 diff changeset	539 cur->value = context->vdpmem[(context->regs[REG_DMASRC_M] << 8) \| context->regs[REG_DMASRC_L] ^ 1] \| (cur->value & 0xFF00);
2e4a4188cfb0 Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all. Mike Pavone <pavone@retrodev.com> parents: 477 diff changeset	540 cur->cd = VRAM_WRITE;
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	541 context->flags &= ~FLAG_UNUSED_SLOT;
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	542 }
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	543 break;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	544 case 0x80:
478 2e4a4188cfb0 Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all. Mike Pavone <pavone@retrodev.com> parents: 477 diff changeset	545 if (context->fifo_read < 0) {
2e4a4188cfb0 Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all. Mike Pavone <pavone@retrodev.com> parents: 477 diff changeset	546 context->fifo_read = (context->fifo_write-1) & (FIFO_SIZE-1);
2e4a4188cfb0 Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all. Mike Pavone <pavone@retrodev.com> parents: 477 diff changeset	547 cur = context->fifo + context->fifo_read;
2e4a4188cfb0 Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all. Mike Pavone <pavone@retrodev.com> parents: 477 diff changeset	548 cur->cycle = context->cycles;
2e4a4188cfb0 Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all. Mike Pavone <pavone@retrodev.com> parents: 477 diff changeset	549 cur->address = context->address;
2e4a4188cfb0 Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all. Mike Pavone <pavone@retrodev.com> parents: 477 diff changeset	550 cur->partial = 2;
2e4a4188cfb0 Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all. Mike Pavone <pavone@retrodev.com> parents: 477 diff changeset	551 }
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	552 break;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	553 }
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	554
478 2e4a4188cfb0 Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all. Mike Pavone <pavone@retrodev.com> parents: 477 diff changeset	555 if (cur) {
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	556 context->regs[REG_DMASRC_L] += 1;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	557 if (!context->regs[REG_DMASRC_L]) {
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	558 context->regs[REG_DMASRC_M] += 1;
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	559 }
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	560 context->address += context->regs[REG_AUTOINC];
478 2e4a4188cfb0 Fix DMA fill so that it does not cause observable changes to the FIFO. Get DMA copy mostly correct from an observable ffect perspective. DMA copy probably does not reflect internal implementation still given that evidence seems to suggest no FIFO usage at all. Mike Pavone <pavone@retrodev.com> parents: 477 diff changeset	561 uint16_t dma_len = ((context->regs[REG_DMALEN_H] << 8) \| context->regs[REG_DMALEN_L]) - 1;
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	562 context->regs[REG_DMALEN_H] = dma_len >> 8;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	563 context->regs[REG_DMALEN_L] = dma_len;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	564 if (!dma_len) {
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	565 //printf("DMA end at cycle %d\n", context->cycles);
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	566 context->flags &= ~FLAG_DMA_RUN;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	567 context->cd &= 0xF;
75 108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	568 }
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	569 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	570 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	571
40 7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	572 #define WINDOW_RIGHT 0x80
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	573 #define WINDOW_DOWN 0x80
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	574
25 4d0c20ad815a Fix vertical scroll value for plane B Mike Pavone <pavone@retrodev.com> parents: 24 diff changeset	575 void read_map_scroll(uint16_t column, uint16_t vsram_off, uint32_t line, uint16_t address, uint16_t hscroll_val, vdp_context * context)
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	576 {
417 acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	577 uint16_t window_line_shift, v_offset_mask, vscroll_shift;
414 51ee0f117365 Fix vscroll calculation in double resultion interlace mode Mike Pavone <pavone@retrodev.com> parents: 413 diff changeset	578 if (context->double_res) {
413 36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	579 line *= 2;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	580 if (context->framebuf != context->oddbuf) {
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	581 line++;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	582 }
417 acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	583 window_line_shift = 4;
acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	584 v_offset_mask = 0xF;
acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	585 vscroll_shift = 4;
acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	586 } else {
acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	587 window_line_shift = 3;
acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	588 v_offset_mask = 0x7;
acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	589 vscroll_shift = 3;
414 51ee0f117365 Fix vscroll calculation in double resultion interlace mode Mike Pavone <pavone@retrodev.com> parents: 413 diff changeset	590 }
40 7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	591 if (!vsram_off) {
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	592 uint16_t left_col, right_col;
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	593 if (context->regs[REG_WINDOW_H] & WINDOW_RIGHT) {
41 e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	594 left_col = (context->regs[REG_WINDOW_H] & 0x1F) * 2;
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	595 right_col = 42;
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	596 } else {
40 7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	597 left_col = 0;
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	598 right_col = (context->regs[REG_WINDOW_H] & 0x1F) * 2;
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	599 if (right_col) {
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	600 right_col += 2;
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	601 }
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	602 }
41 e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	603 uint16_t top_line, bottom_line;
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	604 if (context->regs[REG_WINDOW_V] & WINDOW_DOWN) {
417 acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	605 top_line = (context->regs[REG_WINDOW_V] & 0x1F) << window_line_shift;
acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	606 bottom_line = context->double_res ? 481 : 241;
41 e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	607 } else {
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	608 top_line = 0;
417 acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	609 bottom_line = (context->regs[REG_WINDOW_V] & 0x1F) << window_line_shift;
41 e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	610 }
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	611 if ((column >= left_col && column < right_col) \|\| (line >= top_line && line < bottom_line)) {
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	612 uint16_t address = context->regs[REG_WINDOW] << 10;
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	613 uint16_t line_offset, offset, mask;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	614 if (context->regs[REG_MODE_4] & BIT_H40) {
41 e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	615 address &= 0xF000;
417 acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	616 line_offset = (((line) >> vscroll_shift) * 64 * 2) & 0xFFF;
41 e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	617 mask = 0x7F;
450 3758bcdae5de Fix bug that caused a DMA fill to start after another DMA operation completed if the FIFO is not empty Mike Pavone <pavone@retrodev.com> parents: 438 diff changeset	618
41 e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	619 } else {
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	620 address &= 0xF800;
417 acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	621 line_offset = (((line) >> vscroll_shift) * 32 * 2) & 0xFFF;
41 e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	622 mask = 0x3F;
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	623 }
417 acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	624 if (context->double_res) {
acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	625 mask <<= 1;
acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	626 mask \|= 1;
acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	627 }
42 6653e67a6811 Fix bug in tile address masking. Remove some debug code from window plane. Mike Pavone <pavone@retrodev.com> parents: 41 diff changeset	628 offset = address + line_offset + (((column - 2) * 2) & mask);
41 e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	629 context->col_1 = (context->vdpmem[offset] << 8) \| context->vdpmem[offset+1];
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	630 //printf("Window \| top: %d, bot: %d, left: %d, right: %d, base: %X, line: %X offset: %X, tile: %X, reg: %X\n", top_line, bottom_line, left_col, right_col, address, line_offset, offset, ((context->col_1 & 0x3FF) << 5), context->regs[REG_WINDOW]);
42 6653e67a6811 Fix bug in tile address masking. Remove some debug code from window plane. Mike Pavone <pavone@retrodev.com> parents: 41 diff changeset	631 offset = address + line_offset + (((column - 1) * 2) & mask);
41 e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	632 context->col_2 = (context->vdpmem[offset] << 8) \| context->vdpmem[offset+1];
417 acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	633 context->v_offset = (line) & v_offset_mask;
41 e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	634 context->flags \|= FLAG_WINDOW;
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	635 return;
40 7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	636 }
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	637 context->flags &= ~FLAG_WINDOW;
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	638 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	639 uint16_t vscroll;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	640 switch(context->regs[REG_SCROLL] & 0x30)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	641 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	642 case 0:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	643 vscroll = 0xFF;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	644 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	645 case 0x10:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	646 vscroll = 0x1FF;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	647 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	648 case 0x20:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	649 //TODO: Verify this behavior
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	650 vscroll = 0;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	651 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	652 case 0x30:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	653 vscroll = 0x3FF;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	654 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	655 }
414 51ee0f117365 Fix vscroll calculation in double resultion interlace mode Mike Pavone <pavone@retrodev.com> parents: 413 diff changeset	656 if (context->double_res) {
413 36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	657 vscroll <<= 1;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	658 vscroll \|= 1;
414 51ee0f117365 Fix vscroll calculation in double resultion interlace mode Mike Pavone <pavone@retrodev.com> parents: 413 diff changeset	659 }
454 e9b6fe443bf2 Fix per-column scrolling bug Mike Pavone <pavone@retrodev.com> parents: 453 diff changeset	660 vscroll &= (context->vsram[(context->regs[REG_MODE_3] & BIT_VSCROLL ? (column-2)&63 : 0) + vsram_off] + line);
414 51ee0f117365 Fix vscroll calculation in double resultion interlace mode Mike Pavone <pavone@retrodev.com> parents: 413 diff changeset	661 context->v_offset = vscroll & v_offset_mask;
26 a7c2b92d8056 Fix management of context->sprite_draws so the sprite layer only draws when it should Mike Pavone <pavone@retrodev.com> parents: 25 diff changeset	662 //printf("%s \| line %d, vsram: %d, vscroll: %d, v_offset: %d\n",(vsram_off ? "B" : "A"), line, context->vsram[context->regs[REG_MODE_3] & 0x4 ? column : 0], vscroll, context->v_offset);
414 51ee0f117365 Fix vscroll calculation in double resultion interlace mode Mike Pavone <pavone@retrodev.com> parents: 413 diff changeset	663 vscroll >>= vscroll_shift;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	664 uint16_t hscroll_mask;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	665 uint16_t v_mul;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	666 switch(context->regs[REG_SCROLL] & 0x3)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	667 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	668 case 0:
108 1a551a85cb06 Fix horizontal mask values for scroll plane map address calculation Mike Pavone <pavone@retrodev.com> parents: 87 diff changeset	669 hscroll_mask = 0x1F;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	670 v_mul = 64;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	671 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	672 case 0x1:
39 3c69319269ef Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should Mike Pavone <pavone@retrodev.com> parents: 38 diff changeset	673 hscroll_mask = 0x3F;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	674 v_mul = 128;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	675 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	676 case 0x2:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	677 //TODO: Verify this behavior
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	678 hscroll_mask = 0;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	679 v_mul = 0;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	680 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	681 case 0x3:
108 1a551a85cb06 Fix horizontal mask values for scroll plane map address calculation Mike Pavone <pavone@retrodev.com> parents: 87 diff changeset	682 hscroll_mask = 0x7F;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	683 v_mul = 256;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	684 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	685 }
28 037963b4c92d Fix BG plane B render bug Mike Pavone <pavone@retrodev.com> parents: 27 diff changeset	686 uint16_t hscroll, offset;
037963b4c92d Fix BG plane B render bug Mike Pavone <pavone@retrodev.com> parents: 27 diff changeset	687 for (int i = 0; i < 2; i++) {
39 3c69319269ef Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should Mike Pavone <pavone@retrodev.com> parents: 38 diff changeset	688 hscroll = (column - 2 + i - ((hscroll_val/8) & 0xFFFE)) & hscroll_mask;
3c69319269ef Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should Mike Pavone <pavone@retrodev.com> parents: 38 diff changeset	689 offset = address + ((vscroll * v_mul + hscroll*2) & 0x1FFF);
3c69319269ef Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should Mike Pavone <pavone@retrodev.com> parents: 38 diff changeset	690 //printf("%s \| line: %d, col: %d, x: %d, hs_mask %X, scr reg: %X, tbl addr: %X\n", (vsram_off ? "B" : "A"), line, (column-2+i), hscroll, hscroll_mask, context->regs[REG_SCROLL], offset);
28 037963b4c92d Fix BG plane B render bug Mike Pavone <pavone@retrodev.com> parents: 27 diff changeset	691 uint16_t col_val = (context->vdpmem[offset] << 8) \| context->vdpmem[offset+1];
037963b4c92d Fix BG plane B render bug Mike Pavone <pavone@retrodev.com> parents: 27 diff changeset	692 if (i) {
037963b4c92d Fix BG plane B render bug Mike Pavone <pavone@retrodev.com> parents: 27 diff changeset	693 context->col_2 = col_val;
037963b4c92d Fix BG plane B render bug Mike Pavone <pavone@retrodev.com> parents: 27 diff changeset	694 } else {
037963b4c92d Fix BG plane B render bug Mike Pavone <pavone@retrodev.com> parents: 27 diff changeset	695 context->col_1 = col_val;
037963b4c92d Fix BG plane B render bug Mike Pavone <pavone@retrodev.com> parents: 27 diff changeset	696 }
037963b4c92d Fix BG plane B render bug Mike Pavone <pavone@retrodev.com> parents: 27 diff changeset	697 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	698 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	699
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	700 void read_map_scroll_a(uint16_t column, uint32_t line, vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	701 {
25 4d0c20ad815a Fix vertical scroll value for plane B Mike Pavone <pavone@retrodev.com> parents: 24 diff changeset	702 read_map_scroll(column, 0, line, (context->regs[REG_SCROLL_A] & 0x38) << 10, context->hscroll_a, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	703 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	704
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	705 void read_map_scroll_b(uint16_t column, uint32_t line, vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	706 {
25 4d0c20ad815a Fix vertical scroll value for plane B Mike Pavone <pavone@retrodev.com> parents: 24 diff changeset	707 read_map_scroll(column, 1, line, (context->regs[REG_SCROLL_B] & 0x7) << 13, context->hscroll_b, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	708 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	709
436 e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	710 void render_map(uint16_t col, uint8_t * tmp_buf, uint8_t offset, vdp_context * context)
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	711 {
413 36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	712 uint16_t address;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	713 uint8_t shift, add;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	714 if (context->double_res) {
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	715 address = ((col & 0x3FF) << 6);
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	716 shift = 1;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	717 add = context->framebuf != context->oddbuf ? 1 : 0;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	718 } else {
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	719 address = ((col & 0x7FF) << 5);
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	720 shift = 0;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	721 add = 0;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	722 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	723 if (col & MAP_BIT_V_FLIP) {
414 51ee0f117365 Fix vscroll calculation in double resultion interlace mode Mike Pavone <pavone@retrodev.com> parents: 413 diff changeset	724 address += 28 - 4 * context->v_offset/((context->v_offset << shift) + add)/;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	725 } else {
414 51ee0f117365 Fix vscroll calculation in double resultion interlace mode Mike Pavone <pavone@retrodev.com> parents: 413 diff changeset	726 address += 4 * context->v_offset/((context->v_offset << shift) + add)/;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	727 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	728 uint16_t pal_priority = (col >> 9) & 0x70;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	729 int32_t dir;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	730 if (col & MAP_BIT_H_FLIP) {
436 e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	731 offset += 7;
e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	732 offset &= SCROLL_BUFFER_MASK;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	733 dir = -1;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	734 } else {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	735 dir = 1;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	736 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	737 for (uint32_t i=0; i < 4; i++, address++)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	738 {
436 e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	739 tmp_buf[offset] = pal_priority \| (context->vdpmem[address] >> 4);
e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	740 offset += dir;
e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	741 offset &= SCROLL_BUFFER_MASK;
e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	742 tmp_buf[offset] = pal_priority \| (context->vdpmem[address] & 0xF);
e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	743 offset += dir;
e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	744 offset &= SCROLL_BUFFER_MASK;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	745 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	746 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	747
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	748 void render_map_1(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	749 {
436 e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	750 render_map(context->col_1, context->tmp_buf_a, context->buf_a_off, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	751 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	752
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	753 void render_map_2(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	754 {
436 e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	755 render_map(context->col_2, context->tmp_buf_a, context->buf_a_off+8, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	756 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	757
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	758 void render_map_3(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	759 {
436 e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	760 render_map(context->col_1, context->tmp_buf_b, context->buf_b_off, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	761 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	762
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	763 void render_map_output(uint32_t line, int32_t col, vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	764 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	765 if (line >= 240) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	766 return;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	767 }
436 e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	768 render_map(context->col_2, context->tmp_buf_b, context->buf_b_off+8, context);
426 add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	769 uint16_t *dst;
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	770 uint32_t *dst32;
436 e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	771 uint8_t sprite_buf, plane_a, *plane_b;
e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	772 int plane_a_off, plane_b_off;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	773 if (col)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	774 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	775 col-=2;
426 add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	776 if (context->b32) {
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	777 dst32 = context->framebuf;
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	778 dst32 += line * 320 + col * 8;
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	779 } else {
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	780 dst = context->framebuf;
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	781 dst += line * 320 + col * 8;
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	782 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	783 sprite_buf = context->linebuf + col * 8;
437 afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	784 uint8_t a_src, src;
40 7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	785 if (context->flags & FLAG_WINDOW) {
436 e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	786 plane_a_off = context->buf_a_off;
437 afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	787 a_src = DBG_SRC_W;
40 7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	788 } else {
436 e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	789 plane_a_off = context->buf_a_off - (context->hscroll_a & 0xF);
437 afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	790 a_src = DBG_SRC_A;
40 7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	791 }
436 e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	792 plane_b_off = context->buf_b_off - (context->hscroll_b & 0xF);
30 03f9bb57cc54 Small cleanup Mike Pavone <pavone@retrodev.com> parents: 29 diff changeset	793 //printf("A \| tmp_buf offset: %d\n", 8 - (context->hscroll_a & 0x7));
450 3758bcdae5de Fix bug that caused a DMA fill to start after another DMA operation completed if the FIFO is not empty Mike Pavone <pavone@retrodev.com> parents: 438 diff changeset	794
230 d3266cee02c9 Implemented shadow hilight mode. Mike Pavone <pavone@retrodev.com> parents: 191 diff changeset	795 if (context->regs[REG_MODE_4] & BIT_HILIGHT) {
436 e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	796 for (int i = 0; i < 16; ++plane_a_off, ++plane_b_off, ++sprite_buf, ++i) {
230 d3266cee02c9 Implemented shadow hilight mode. Mike Pavone <pavone@retrodev.com> parents: 191 diff changeset	797 uint8_t pixel;
436 e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	798 plane_a = context->tmp_buf_a + (plane_a_off & SCROLL_BUFFER_MASK);
e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	799 plane_b = context->tmp_buf_b + (plane_b_off & SCROLL_BUFFER_MASK);
437 afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	800 uint32_t * colors = context->colors;
230 d3266cee02c9 Implemented shadow hilight mode. Mike Pavone <pavone@retrodev.com> parents: 191 diff changeset	801 src = 0;
505 b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	802 pixel = context->regs[REG_BG_COLOR];
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	803 src = DBG_SRC_BG;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	804 if (*plane_b & 0xF) {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	805 pixel = *plane_b;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	806 src = DBG_SRC_B;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	807 }
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	808 if (plane_a & 0xF && (plane_a & BUF_BIT_PRIORITY) >= (pixel & BUF_BIT_PRIORITY)) {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	809 pixel = *plane_a;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	810 src = DBG_SRC_A;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	811 }
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	812 if (*sprite_buf & 0xF) {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	813 uint8_t sprite_color = *sprite_buf & 0x3F;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	814 if (sprite_color == 0x3E) {
437 afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	815 colors += CRAM_SIZE*2;
505 b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	816 src \|= DBG_HILIGHT;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	817 } else if (sprite_color == 0x3F) {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	818 colors += CRAM_SIZE;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	819 src \|= DBG_SHADOW;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	820 } else if ((*sprite_buf & BUF_BIT_PRIORITY) >= (pixel & BUF_BIT_PRIORITY)) {
230 d3266cee02c9 Implemented shadow hilight mode. Mike Pavone <pavone@retrodev.com> parents: 191 diff changeset	821 pixel = *sprite_buf;
437 afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	822 src = DBG_SRC_S;
505 b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	823 if ((pixel & 0xF) == 0xE) {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	824 src \|= DBG_SHADOW;
437 afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	825 colors += CRAM_SIZE;
230 d3266cee02c9 Implemented shadow hilight mode. Mike Pavone <pavone@retrodev.com> parents: 191 diff changeset	826 }
505 b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	827
230 d3266cee02c9 Implemented shadow hilight mode. Mike Pavone <pavone@retrodev.com> parents: 191 diff changeset	828 }
505 b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	829 } else if (!((plane_a \| plane_b) & BUF_BIT_PRIORITY)) {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	830 colors += CRAM_SIZE;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	831 src \|= DBG_SHADOW;
230 d3266cee02c9 Implemented shadow hilight mode. Mike Pavone <pavone@retrodev.com> parents: 191 diff changeset	832 }
426 add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	833 pixel &= 0x3F;
437 afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	834 uint32_t outpixel;
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	835 if (context->debug) {
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	836 outpixel = context->debugcolors[src];
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	837 } else {
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	838 outpixel = colors[pixel];
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	839 }
426 add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	840 if (context->b32) {
437 afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	841 *(dst32++) = outpixel;
426 add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	842 } else {
437 afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	843 *(dst++) = outpixel;
426 add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	844 }
add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	845 //*dst = (context->cram[pixel & 0x3F] & 0xEEE) \| ((pixel & BUF_BIT_PRIORITY) ? FBUF_BIT_PRIORITY : 0) \| src;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	846 }
230 d3266cee02c9 Implemented shadow hilight mode. Mike Pavone <pavone@retrodev.com> parents: 191 diff changeset	847 } else {
436 e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	848 for (int i = 0; i < 16; ++plane_a_off, ++plane_b_off, ++sprite_buf, ++i) {
e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	849 plane_a = context->tmp_buf_a + (plane_a_off & SCROLL_BUFFER_MASK);
e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	850 plane_b = context->tmp_buf_b + (plane_b_off & SCROLL_BUFFER_MASK);
505 b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	851 uint8_t pixel = context->regs[REG_BG_COLOR];
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	852 src = DBG_SRC_BG;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	853 if (*plane_b & 0xF) {
230 d3266cee02c9 Implemented shadow hilight mode. Mike Pavone <pavone@retrodev.com> parents: 191 diff changeset	854 pixel = *plane_b;
437 afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	855 src = DBG_SRC_B;
505 b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	856 }
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	857 if (plane_a & 0xF && (plane_a & BUF_BIT_PRIORITY) >= (pixel & BUF_BIT_PRIORITY)) {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	858 pixel = *plane_a;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	859 src = DBG_SRC_A;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	860 }
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	861 if (sprite_buf & 0xF && (sprite_buf & BUF_BIT_PRIORITY) >= (pixel & BUF_BIT_PRIORITY)) {
230 d3266cee02c9 Implemented shadow hilight mode. Mike Pavone <pavone@retrodev.com> parents: 191 diff changeset	862 pixel = *sprite_buf;
437 afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	863 src = DBG_SRC_S;
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	864 }
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	865 uint32_t outpixel;
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	866 if (context->debug) {
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	867 outpixel = context->debugcolors[src];
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	868 } else {
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	869 outpixel = context->colors[pixel & 0x3F];
230 d3266cee02c9 Implemented shadow hilight mode. Mike Pavone <pavone@retrodev.com> parents: 191 diff changeset	870 }
426 add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	871 if (context->b32) {
437 afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	872 *(dst32++) = outpixel;
426 add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	873 } else {
437 afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	874 *(dst++) = outpixel;
426 add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	875 }
230 d3266cee02c9 Implemented shadow hilight mode. Mike Pavone <pavone@retrodev.com> parents: 191 diff changeset	876 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	877 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	878 }
436 e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	879 context->buf_a_off = (context->buf_a_off + SCROLL_BUFFER_DRAW) & SCROLL_BUFFER_MASK;
e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	880 context->buf_b_off = (context->buf_b_off + SCROLL_BUFFER_DRAW) & SCROLL_BUFFER_MASK;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	881 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	882
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	883 #define COLUMN_RENDER_BLOCK(column, startcyc) \
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	884 case startcyc:\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	885 read_map_scroll_a(column, line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	886 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	887 case (startcyc+1):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	888 external_slot(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	889 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	890 case (startcyc+2):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	891 render_map_1(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	892 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	893 case (startcyc+3):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	894 render_map_2(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	895 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	896 case (startcyc+4):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	897 read_map_scroll_b(column, line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	898 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	899 case (startcyc+5):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	900 read_sprite_x(line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	901 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	902 case (startcyc+6):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	903 render_map_3(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	904 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	905 case (startcyc+7):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	906 render_map_output(line, column, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	907 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	908
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	909 #define COLUMN_RENDER_BLOCK_REFRESH(column, startcyc) \
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	910 case startcyc:\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	911 read_map_scroll_a(column, line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	912 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	913 case (startcyc+1):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	914 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	915 case (startcyc+2):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	916 render_map_1(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	917 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	918 case (startcyc+3):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	919 render_map_2(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	920 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	921 case (startcyc+4):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	922 read_map_scroll_b(column, line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	923 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	924 case (startcyc+5):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	925 read_sprite_x(line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	926 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	927 case (startcyc+6):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	928 render_map_3(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	929 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	930 case (startcyc+7):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	931 render_map_output(line, column, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	932 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	933
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	934 void vdp_h40(uint32_t line, uint32_t linecyc, vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	935 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	936 uint16_t address;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	937 uint32_t mask;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	938 switch(linecyc)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	939 {
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	940 case 165:
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	941 case 166:
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	942 external_slot(context);
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	943 break;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	944 //sprite render to line buffer starts
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	945 case 167:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	946 case 168:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	947 case 169:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	948 case 170:
329 fd5f6577db9b Implement first line/last line weirdness in VDP Mike Pavone <pavone@retrodev.com> parents: 328 diff changeset	949 if (line == 0xFF) {
fd5f6577db9b Implement first line/last line weirdness in VDP Mike Pavone <pavone@retrodev.com> parents: 328 diff changeset	950 external_slot(context);
fd5f6577db9b Implement first line/last line weirdness in VDP Mike Pavone <pavone@retrodev.com> parents: 328 diff changeset	951 } else {
fd5f6577db9b Implement first line/last line weirdness in VDP Mike Pavone <pavone@retrodev.com> parents: 328 diff changeset	952 render_sprite_cells(context);
fd5f6577db9b Implement first line/last line weirdness in VDP Mike Pavone <pavone@retrodev.com> parents: 328 diff changeset	953 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	954 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	955 //sprite attribute table scan starts
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	956 case 171:
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	957 render_sprite_cells( context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	958 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	959 break;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	960 case 172:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	961 case 173:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	962 case 174:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	963 case 175:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	964 case 176:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	965 case 177:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	966 case 178:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	967 case 179:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	968 case 180:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	969 case 181:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	970 case 182:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	971 case 229:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	972 case 230:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	973 case 231:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	974 case 232:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	975 case 233:
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	976 //!HSYNC asserted
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	977 case 234:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	978 case 235:
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	979 render_sprite_cells(context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	980 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	981 break;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	982 case 236:
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	983 external_slot(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	984 break;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	985 case 237:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	986 case 238:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	987 case 239:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	988 case 240:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	989 case 241:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	990 case 242:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	991 case 243:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	992 case 244:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	993 case 245:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	994 case 246:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	995 case 247:
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	996 render_sprite_cells(context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	997 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	998 break;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	999 case 248:
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1000 address = (context->regs[REG_HSCROLL] & 0x3F) << 10;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1001 mask = 0;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1002 if (context->regs[REG_MODE_3] & 0x2) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1003 mask \|= 0xF8;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1004 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1005 if (context->regs[REG_MODE_3] & 0x1) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1006 mask \|= 0x7;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1007 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1008 line &= mask;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1009 address += line * 4;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1010 context->hscroll_a = context->vdpmem[address] << 8 \| context->vdpmem[address+1];
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1011 context->hscroll_b = context->vdpmem[address+2] << 8 \| context->vdpmem[address+3];
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1012 //printf("%d: HScroll A: %d, HScroll B: %d\n", line, context->hscroll_a, context->hscroll_b);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1013 break;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1014 case 249:
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1015 //!HSYNC high
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1016 case 250:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1017 case 251:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1018 case 252:
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	1019 render_sprite_cells(context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1020 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1021 break;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1022 case 253:
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1023 read_map_scroll_a(0, line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1024 break;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1025 case 254:
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	1026 render_sprite_cells(context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1027 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1028 break;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1029 case 255:
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1030 render_map_1(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1031 scan_sprite_table(line, context);//Just a guess
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1032 break;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1033 case 0:
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1034 render_map_2(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1035 scan_sprite_table(line, context);//Just a guess
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1036 break;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1037 case 1:
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1038 read_map_scroll_b(0, line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1039 break;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1040 case 2:
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	1041 render_sprite_cells(context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1042 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1043 break;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1044 case 3:
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1045 render_map_3(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1046 scan_sprite_table(line, context);//Just a guess
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1047 break;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1048 case 4:
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1049 render_map_output(line, 0, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1050 scan_sprite_table(line, context);//Just a guess
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1051 //reverse context slot counter so it counts the number of sprite slots
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1052 //filled rather than the number of available slots
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	1053 //context->slot_counter = MAX_SPRITES_LINE - context->slot_counter;
72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	1054 context->cur_slot = MAX_SPRITES_LINE-1;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1055 context->sprite_draws = MAX_DRAWS;
36 04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	1056 context->flags &= (~FLAG_CAN_MASK & ~FLAG_MASKED);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1057 break;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1058 COLUMN_RENDER_BLOCK(2, 5)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1059 COLUMN_RENDER_BLOCK(4, 13)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1060 COLUMN_RENDER_BLOCK(6, 21)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1061 COLUMN_RENDER_BLOCK_REFRESH(8, 29)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1062 COLUMN_RENDER_BLOCK(10, 37)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1063 COLUMN_RENDER_BLOCK(12, 45)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1064 COLUMN_RENDER_BLOCK(14, 53)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1065 COLUMN_RENDER_BLOCK_REFRESH(16, 61)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1066 COLUMN_RENDER_BLOCK(18, 69)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1067 COLUMN_RENDER_BLOCK(20, 77)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1068 COLUMN_RENDER_BLOCK(22, 85)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1069 COLUMN_RENDER_BLOCK_REFRESH(24, 93)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1070 COLUMN_RENDER_BLOCK(26, 101)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1071 COLUMN_RENDER_BLOCK(28, 109)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1072 COLUMN_RENDER_BLOCK(30, 117)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1073 COLUMN_RENDER_BLOCK_REFRESH(32, 125)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1074 COLUMN_RENDER_BLOCK(34, 133)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1075 COLUMN_RENDER_BLOCK(36, 141)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1076 COLUMN_RENDER_BLOCK(38, 149)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1077 COLUMN_RENDER_BLOCK_REFRESH(40, 157)
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1078 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1079 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1080
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1081 void vdp_h32(uint32_t line, uint32_t linecyc, vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1082 {
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1083 uint16_t address;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1084 uint32_t mask;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1085 switch(linecyc)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1086 {
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1087 case 132:
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1088 case 133:
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1089 external_slot(context);
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1090 break;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1091 //sprite render to line buffer starts
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1092 case 134:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1093 case 135:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1094 case 136:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1095 case 137:
329 fd5f6577db9b Implement first line/last line weirdness in VDP Mike Pavone <pavone@retrodev.com> parents: 328 diff changeset	1096 if (line == 0xFF) {
fd5f6577db9b Implement first line/last line weirdness in VDP Mike Pavone <pavone@retrodev.com> parents: 328 diff changeset	1097 external_slot(context);
fd5f6577db9b Implement first line/last line weirdness in VDP Mike Pavone <pavone@retrodev.com> parents: 328 diff changeset	1098 } else {
fd5f6577db9b Implement first line/last line weirdness in VDP Mike Pavone <pavone@retrodev.com> parents: 328 diff changeset	1099 render_sprite_cells(context);
fd5f6577db9b Implement first line/last line weirdness in VDP Mike Pavone <pavone@retrodev.com> parents: 328 diff changeset	1100 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1101 break;
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1102 //sprite attribute table scan starts
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1103 case 138:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1104 render_sprite_cells( context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1105 scan_sprite_table(line, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1106 break;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1107 case 139:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1108 case 140:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1109 case 141:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1110 case 142:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1111 case 143:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1112 case 144:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1113 case 145:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1114 case 146:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1115 case 147:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1116 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1117 scan_sprite_table(line, context);
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1118 case 233:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1119 external_slot(context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1120 break;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1121 case 234:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1122 case 235:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1123 case 236:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1124 case 237:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1125 case 238:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1126 //HSYNC start
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1127 case 239:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1128 case 240:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1129 case 241:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1130 case 242:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1131 case 243:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1132 case 244:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1133 case 245:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1134 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1135 scan_sprite_table(line, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1136 break;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1137 case 246:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1138 external_slot(context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1139 break;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1140 case 247:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1141 address = (context->regs[REG_HSCROLL] & 0x3F) << 10;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1142 mask = 0;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1143 if (context->regs[REG_MODE_3] & 0x2) {
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1144 mask \|= 0xF8;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1145 }
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1146 if (context->regs[REG_MODE_3] & 0x1) {
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1147 mask \|= 0x7;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1148 }
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1149 line &= mask;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1150 address += line * 4;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1151 context->hscroll_a = context->vdpmem[address] << 8 \| context->vdpmem[address+1];
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1152 context->hscroll_b = context->vdpmem[address+2] << 8 \| context->vdpmem[address+3];
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1153 //printf("%d: HScroll A: %d, HScroll B: %d\n", line, context->hscroll_a, context->hscroll_b);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1154 break;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1155 case 248:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1156 case 249:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1157 case 250:
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1158 case 251:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1159 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1160 scan_sprite_table(line, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1161 break;
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1162 //!HSYNC high
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1163 case 252:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1164 read_map_scroll_a(0, line, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1165 break;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1166 case 253:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1167 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1168 scan_sprite_table(line, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1169 break;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1170 case 254:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1171 render_map_1(context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1172 scan_sprite_table(line, context);//Just a guess
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1173 break;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1174 case 255:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1175 render_map_2(context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1176 scan_sprite_table(line, context);//Just a guess
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1177 break;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1178 case 0:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1179 read_map_scroll_b(0, line, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1180 break;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1181 case 1:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1182 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1183 scan_sprite_table(line, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1184 break;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1185 case 2:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1186 render_map_3(context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1187 scan_sprite_table(line, context);//Just a guess
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1188 break;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1189 case 3:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1190 render_map_output(line, 0, context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1191 scan_sprite_table(line, context);//Just a guess
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1192 //reverse context slot counter so it counts the number of sprite slots
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1193 //filled rather than the number of available slots
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1194 //context->slot_counter = MAX_SPRITES_LINE - context->slot_counter;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1195 context->cur_slot = MAX_SPRITES_LINE_H32-1;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1196 context->sprite_draws = MAX_DRAWS_H32;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1197 context->flags &= (~FLAG_CAN_MASK & ~FLAG_MASKED);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1198 break;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1199 COLUMN_RENDER_BLOCK(2, 4)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1200 COLUMN_RENDER_BLOCK(4, 12)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1201 COLUMN_RENDER_BLOCK(6, 20)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1202 COLUMN_RENDER_BLOCK_REFRESH(8, 28)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1203 COLUMN_RENDER_BLOCK(10, 36)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1204 COLUMN_RENDER_BLOCK(12, 44)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1205 COLUMN_RENDER_BLOCK(14, 52)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1206 COLUMN_RENDER_BLOCK_REFRESH(16, 60)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1207 COLUMN_RENDER_BLOCK(18, 68)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1208 COLUMN_RENDER_BLOCK(20, 76)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1209 COLUMN_RENDER_BLOCK(22, 84)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1210 COLUMN_RENDER_BLOCK_REFRESH(24, 92)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1211 COLUMN_RENDER_BLOCK(26, 100)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1212 COLUMN_RENDER_BLOCK(28, 108)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1213 COLUMN_RENDER_BLOCK(30, 116)
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1214 COLUMN_RENDER_BLOCK_REFRESH(32, 124)
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1215 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1216 }
503 eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1217
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1218 void vdp_h40_line(uint32_t line, vdp_context * context)
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1219 {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1220 context->cur_slot = MAX_DRAWS-1;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1221 memset(context->linebuf, 0, LINEBUF_SIZE);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1222 if (line == 0xFF) {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1223 external_slot(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1224 if (context->flags & FLAG_DMA_RUN) {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1225 run_dma_src(context, 0);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1226 }
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1227 external_slot(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1228 if (context->flags & FLAG_DMA_RUN) {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1229 run_dma_src(context, 0);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1230 }
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1231 external_slot(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1232 if (context->flags & FLAG_DMA_RUN) {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1233 run_dma_src(context, 0);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1234 }
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1235 external_slot(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1236 if (context->flags & FLAG_DMA_RUN) {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1237 run_dma_src(context, 0);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1238 }
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1239 external_slot(context);
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1240 if (context->flags & FLAG_DMA_RUN) {
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1241 run_dma_src(context, 0);
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1242 }
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1243 external_slot(context);
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1244 if (context->flags & FLAG_DMA_RUN) {
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1245 run_dma_src(context, 0);
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1246 }
505 b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1247 for (int i = 0; i < 19; i++)
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1248 {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1249 scan_sprite_table(line, context);
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1250 }
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1251 external_slot(context);
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1252 for (int i = 0; i < 21; i++)
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1253 {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1254 scan_sprite_table(line, context);
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1255 }
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1256 //reverse context slot counter so it counts the number of sprite slots
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1257 //filled rather than the number of available slots
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1258 //context->slot_counter = MAX_SPRITES_LINE - context->slot_counter;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1259 context->cur_slot = MAX_SPRITES_LINE-1;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1260 context->sprite_draws = MAX_DRAWS;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1261 context->flags &= (~FLAG_CAN_MASK & ~FLAG_MASKED);
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1262 for (int column = 2; column < 42; column += 8)
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1263 {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1264 external_slot(context);
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1265 if (context->flags & FLAG_DMA_RUN) {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1266 run_dma_src(context, 0);
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1267 }
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1268 read_sprite_x(line, context);
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1269
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1270 external_slot(context);
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1271 if (context->flags & FLAG_DMA_RUN) {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1272 run_dma_src(context, 0);
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1273 }
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1274 read_sprite_x(line, context);
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1275
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1276 external_slot(context);
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1277 if (context->flags & FLAG_DMA_RUN) {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1278 run_dma_src(context, 0);
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1279 }
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1280 read_sprite_x(line, context);
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1281
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1282 read_sprite_x(line, context);
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1283 }
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1284
505 b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1285 return;
503 eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1286 }
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1287 external_slot(context);
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1288 if (context->flags & FLAG_DMA_RUN) {
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1289 run_dma_src(context, 0);
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1290 }
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1291 external_slot(context);
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1292 if (context->flags & FLAG_DMA_RUN) {
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1293 run_dma_src(context, 0);
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1294 }
505 b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1295
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1296 render_sprite_cells(context);
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1297 render_sprite_cells(context);
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1298 render_sprite_cells(context);
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1299 render_sprite_cells(context);
503 eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1300 context->sprite_index = 0x80;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1301 context->slot_counter = MAX_SPRITES_LINE;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1302 for (int i = 0; i < 19; i++)
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1303 {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1304 render_sprite_cells(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1305 scan_sprite_table(line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1306 }
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1307 external_slot(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1308 for (int i = 0; i < 11; i++)
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1309 {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1310 render_sprite_cells(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1311 scan_sprite_table(line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1312 }
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1313 uint16_t address;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1314 uint32_t mask;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1315 address = (context->regs[REG_HSCROLL] & 0x3F) << 10;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1316 mask = 0;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1317 if (context->regs[REG_MODE_3] & 0x2) {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1318 mask \|= 0xF8;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1319 }
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1320 if (context->regs[REG_MODE_3] & 0x1) {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1321 mask \|= 0x7;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1322 }
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1323 address += (line & mask) * 4;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1324 context->hscroll_a = context->vdpmem[address] << 8 \| context->vdpmem[address+1];
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1325 context->hscroll_b = context->vdpmem[address+2] << 8 \| context->vdpmem[address+3];
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1326 render_sprite_cells(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1327 scan_sprite_table(line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1328 render_sprite_cells(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1329 scan_sprite_table(line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1330 render_sprite_cells(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1331 scan_sprite_table(line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1332 render_sprite_cells(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1333 scan_sprite_table(line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1334
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1335 read_map_scroll_a(0, line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1336 render_sprite_cells(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1337 scan_sprite_table(line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1338 render_map_1(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1339 scan_sprite_table(line, context);//Just a guess
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1340 render_map_2(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1341 scan_sprite_table(line, context);//Just a guess
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1342 read_map_scroll_b(0, line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1343 render_sprite_cells(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1344 scan_sprite_table(line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1345 render_map_3(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1346 scan_sprite_table(line, context);//Just a guess
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1347 render_map_output(line, 0, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1348 scan_sprite_table(line, context);//Just a guess
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1349 //reverse context slot counter so it counts the number of sprite slots
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1350 //filled rather than the number of available slots
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1351 //context->slot_counter = MAX_SPRITES_LINE - context->slot_counter;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1352 context->cur_slot = MAX_SPRITES_LINE-1;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1353 context->sprite_draws = MAX_DRAWS;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1354 context->flags &= (~FLAG_CAN_MASK & ~FLAG_MASKED);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1355 for (int column = 2; column < 42; column += 2)
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1356 {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1357 read_map_scroll_a(column, line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1358 external_slot(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1359 if (context->flags & FLAG_DMA_RUN) {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1360 run_dma_src(context, 0);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1361 }
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1362 render_map_1(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1363 render_map_2(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1364 read_map_scroll_b(column, line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1365 read_sprite_x(line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1366 render_map_3(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1367 render_map_output(line, column, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1368
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1369 column += 2;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1370 read_map_scroll_a(column, line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1371 external_slot(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1372 if (context->flags & FLAG_DMA_RUN) {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1373 run_dma_src(context, 0);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1374 }
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1375 render_map_1(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1376 render_map_2(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1377 read_map_scroll_b(column, line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1378 read_sprite_x(line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1379 render_map_3(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1380 render_map_output(line, column, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1381
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1382 column += 2;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1383 read_map_scroll_a(column, line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1384 external_slot(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1385 if (context->flags & FLAG_DMA_RUN) {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1386 run_dma_src(context, 0);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1387 }
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1388 render_map_1(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1389 render_map_2(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1390 read_map_scroll_b(column, line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1391 read_sprite_x(line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1392 render_map_3(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1393 render_map_output(line, column, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1394
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1395 column += 2;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1396 read_map_scroll_a(column, line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1397 render_map_1(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1398 render_map_2(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1399 read_map_scroll_b(column, line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1400 read_sprite_x(line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1401 render_map_3(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1402 render_map_output(line, column, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1403 }
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1404 }
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1405
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1406 void latch_mode(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1407 {
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1408 context->latched_mode = context->regs[REG_MODE_2] & BIT_PAL;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1409 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1410
330 57453d3d8be4 Initial stab at implementing funky clock adjustments during HSYNC for H40 mode Mike Pavone <pavone@retrodev.com> parents: 329 diff changeset	1411 void check_render_bg(vdp_context * context, int32_t line, uint32_t slot)
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1412 {
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1413 int starti = -1;
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1414 if (context->regs[REG_MODE_4] & BIT_H40) {
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1415 if (slot >= 12 && slot < 172) {
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1416 uint32_t x = (slot-12)*2;
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1417 starti = line * 320 + x;
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1418 }
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1419 } else {
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1420 if (slot >= 11 && slot < 139) {
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1421 uint32_t x = (slot-11)*2;
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1422 starti = line * 320 + x;
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1423 }
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1424 }
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1425 if (starti >= 0) {
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1426 if (context->b32) {
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1427 uint32_t color = context->colors[context->regs[REG_BG_COLOR]];
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1428 uint32_t * start = context->framebuf;
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1429 start += starti;
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1430 for (int i = 0; i < 2; i++) {
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1431 *(start++) = color;
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1432 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1433 } else {
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1434 uint16_t color = context->colors[context->regs[REG_BG_COLOR]];
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1435 uint16_t * start = context->framebuf;
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1436 start += starti;
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1437 for (int i = 0; i < 2; i++) {
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1438 *(start++) = color;
426 add9e2f5c0e3 Make VDP render in native pixel format of the renderer for a modest performance gain and to make it easier to use OpenGL for rendering Mike Pavone <pavone@retrodev.com> parents: 424 diff changeset	1439 }
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1440 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1441 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1442 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1443
697 7f96bd1cb1be Sync fixes and logging to fix more sync issues Michael Pavone <pavone@retrodev.com> parents: 680 diff changeset	1444 uint32_t const h40_hsync_cycles[] = {19, 20, 20, 20, 18, 20, 20, 20, 18, 20, 20, 20, 18, 20, 20, 20, 19};
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1445
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1446 void vdp_run_context(vdp_context * context, uint32_t target_cycles)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1447 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1448 while(context->cycles < target_cycles)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1449 {
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	1450 context->flags &= ~FLAG_UNUSED_SLOT;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1451 uint32_t line = context->vcounter;
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1452 uint32_t slot = context->hslot;
697 7f96bd1cb1be Sync fixes and logging to fix more sync issues Michael Pavone <pavone@retrodev.com> parents: 680 diff changeset	1453
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1454 if (!line && !slot) {
697 7f96bd1cb1be Sync fixes and logging to fix more sync issues Michael Pavone <pavone@retrodev.com> parents: 680 diff changeset	1455 //TODO: Figure out when this actually happens
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1456 latch_mode(context);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1457 }
697 7f96bd1cb1be Sync fixes and logging to fix more sync issues Michael Pavone <pavone@retrodev.com> parents: 680 diff changeset	1458 uint32_t inactive_start = context->latched_mode & BIT_PAL ? PAL_INACTIVE_START : NTSC_INACTIVE_START;
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1459
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1460 uint8_t is_h40 = context->regs[REG_MODE_4] & BIT_H40;
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1461 if (is_h40) {
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1462 if (slot == 167) {
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1463 context->cur_slot = MAX_DRAWS-1;
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1464 memset(context->linebuf, 0, LINEBUF_SIZE);
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1465 } else if (slot == 171) {
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1466 context->sprite_index = 0x80;
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1467 context->slot_counter = MAX_SPRITES_LINE;
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1468 }
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1469 } else {
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1470 if (slot == 134) {
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1471 context->cur_slot = MAX_DRAWS_H32-1;
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1472 memset(context->linebuf, 0, LINEBUF_SIZE);
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1473 } else if (slot == 138) {
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1474 context->sprite_index = 0x80;
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1475 context->slot_counter = MAX_SPRITES_LINE_H32;
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1476 }
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1477 }
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1478 if (is_h40 && slot == LINE_CHANGE_H40 \|\| !is_h40 && slot == LINE_CHANGE_H32) {
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1479 if (line >= inactive_start) {
317 e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1480 context->hint_counter = context->regs[REG_HINT];
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1481 } else if (context->hint_counter) {
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1482 context->hint_counter--;
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1483 } else {
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1484 context->flags2 \|= FLAG2_HINT_PENDING;
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1485 context->hint_counter = context->regs[REG_HINT];
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1486 }
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1487 } else if(line == inactive_start) {
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1488 uint32_t intslot = context->regs[REG_MODE_4] & BIT_H40 ? VINT_SLOT_H40 : VINT_SLOT_H32;
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1489 if (slot == intslot) {
317 e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1490 context->flags2 \|= FLAG2_VINT_PENDING;
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1491 }
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1492 }
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1493 uint32_t inccycles;
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1494 //line 0x1FF is basically active even though it's not displayed
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1495 uint8_t active_slot = line < inactive_start \|\| line == 0x1FF;
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1496 if (is_h40) {
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1497 if (slot < HSYNC_SLOT_H40 \|\| slot >= HSYNC_END_H40) {
330 57453d3d8be4 Initial stab at implementing funky clock adjustments during HSYNC for H40 mode Mike Pavone <pavone@retrodev.com> parents: 329 diff changeset	1498 inccycles = MCLKS_SLOT_H40;
57453d3d8be4 Initial stab at implementing funky clock adjustments during HSYNC for H40 mode Mike Pavone <pavone@retrodev.com> parents: 329 diff changeset	1499 } else {
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1500 inccycles = h40_hsync_cycles[slot-HSYNC_SLOT_H40];
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1501 }
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1502 //the first inactive line behaves as an active one for the first 4 slots
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1503 if (line == inactive_start && slot > 166 && slot < 171) {
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1504 active_slot = 1;
330 57453d3d8be4 Initial stab at implementing funky clock adjustments during HSYNC for H40 mode Mike Pavone <pavone@retrodev.com> parents: 329 diff changeset	1505 }
57453d3d8be4 Initial stab at implementing funky clock adjustments during HSYNC for H40 mode Mike Pavone <pavone@retrodev.com> parents: 329 diff changeset	1506 } else {
57453d3d8be4 Initial stab at implementing funky clock adjustments during HSYNC for H40 mode Mike Pavone <pavone@retrodev.com> parents: 329 diff changeset	1507 inccycles = MCLKS_SLOT_H32;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1508 //the first inactive line behaves as an active one for the first 4 slots
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1509 if (line == inactive_start && slot > 166 && slot < 171) {
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1510 active_slot = 1;
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1511 }
330 57453d3d8be4 Initial stab at implementing funky clock adjustments during HSYNC for H40 mode Mike Pavone <pavone@retrodev.com> parents: 329 diff changeset	1512 }
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1513 uint8_t inc_slot = 1;
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1514 if (context->regs[REG_MODE_2] & DISPLAY_ENABLE && active_slot) {
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1515 //run VDP rendering for a slot or a line
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1516 if (is_h40) {
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1517 if (slot == LINE_CHANGE_H40 && line < inactive_start && (target_cycles - context->cycles) >= MCLKS_LINE) {
503 eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1518 vdp_h40_line(line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1519 inccycles = MCLKS_LINE;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1520 context->vcounter++;
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1521 inc_slot = 0;
503 eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1522 } else {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1523 vdp_h40(line, slot, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1524 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1525 } else {
330 57453d3d8be4 Initial stab at implementing funky clock adjustments during HSYNC for H40 mode Mike Pavone <pavone@retrodev.com> parents: 329 diff changeset	1526 vdp_h32(line, slot, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1527 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1528 } else {
330 57453d3d8be4 Initial stab at implementing funky clock adjustments during HSYNC for H40 mode Mike Pavone <pavone@retrodev.com> parents: 329 diff changeset	1529 if (!is_refresh(context, slot)) {
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1530 external_slot(context);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1531 }
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1532 if (line < inactive_start) {
330 57453d3d8be4 Initial stab at implementing funky clock adjustments during HSYNC for H40 mode Mike Pavone <pavone@retrodev.com> parents: 329 diff changeset	1533 check_render_bg(context, line, slot);
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1534 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1535 }
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	1536 if (context->flags & FLAG_DMA_RUN && !is_refresh(context, slot)) {
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	1537 run_dma_src(context, slot);
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	1538 }
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1539 if (inc_slot) {
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1540 context->hslot++;
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1541 context->hslot &= 0xFF;
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1542 if (is_h40) {
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1543 if (context->hslot == LINE_CHANGE_H40) {
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1544 context->vcounter++;
699 d8a1fdec68fc Fix frame counter increment and VINT cycle time calculation Michael Pavone <pavone@retrodev.com> parents: 697 diff changeset	1545 if (context->vcounter == (inactive_start + 8)) {
d8a1fdec68fc Fix frame counter increment and VINT cycle time calculation Michael Pavone <pavone@retrodev.com> parents: 697 diff changeset	1546 context->frame++;
d8a1fdec68fc Fix frame counter increment and VINT cycle time calculation Michael Pavone <pavone@retrodev.com> parents: 697 diff changeset	1547 }
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1548 } else if (context->hslot == 183) {
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1549 context->hslot = 229;
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1550 }
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1551 } else {
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1552 if (context->hslot == LINE_CHANGE_H32) {
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1553 context->vcounter++;
699 d8a1fdec68fc Fix frame counter increment and VINT cycle time calculation Michael Pavone <pavone@retrodev.com> parents: 697 diff changeset	1554 if (context->vcounter == (inactive_start + 8)) {
d8a1fdec68fc Fix frame counter increment and VINT cycle time calculation Michael Pavone <pavone@retrodev.com> parents: 697 diff changeset	1555 context->frame++;
d8a1fdec68fc Fix frame counter increment and VINT cycle time calculation Michael Pavone <pavone@retrodev.com> parents: 697 diff changeset	1556 }
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1557 } else if (context->hslot == 148) {
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1558 context->hslot = 233;
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1559 }
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1560 }
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1561
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1562 }
623 66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1563 context->vcounter &= 0x1FF;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1564 if (context->flags2 & FLAG2_REGION_PAL) {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1565 if (context->latched_mode & BIT_PAL) {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1566 if (context->vcounter == 0x10B) {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1567 context->vcounter = 0x1D2;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1568 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1569 } else if (context->vcounter == 0x103){
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1570 context->vcounter = 0x1CA;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1571 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1572 } else if (!(context->latched_mode & BIT_PAL) && context->vcounter == 0xEB) {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1573 context->vcounter = 0x1E5;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1574 }
330 57453d3d8be4 Initial stab at implementing funky clock adjustments during HSYNC for H40 mode Mike Pavone <pavone@retrodev.com> parents: 329 diff changeset	1575 context->cycles += inccycles;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1576 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1577 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1578
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1579 uint32_t vdp_run_to_vblank(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1580 {
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1581 uint32_t target_cycles = ((context->latched_mode & BIT_PAL) ? PAL_INACTIVE_START : NTSC_INACTIVE_START) * MCLKS_LINE;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1582 vdp_run_context(context, target_cycles);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1583 return context->cycles;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1584 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1585
75 108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1586 void vdp_run_dma_done(vdp_context * context, uint32_t target_cycles)
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1587 {
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1588 for(;;) {
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1589 uint32_t dmalen = (context->regs[REG_DMALEN_H] << 8) \| context->regs[REG_DMALEN_L];
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1590 if (!dmalen) {
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1591 dmalen = 0x10000;
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1592 }
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1593 uint32_t min_dma_complete = dmalen * (context->regs[REG_MODE_4] & BIT_H40 ? 16 : 20);
75 108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1594 if ((context->regs[REG_DMASRC_H] & 0xC0) == 0xC0 \|\| (context->cd & 0xF) == VRAM_WRITE) {
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1595 //DMA copies take twice as long to complete since they require a read and a write
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1596 //DMA Fills and transfers to VRAM also take twice as long as it requires 2 writes for a single word
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1597 min_dma_complete *= 2;
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1598 }
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1599 min_dma_complete += context->cycles;
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1600 if (target_cycles < min_dma_complete) {
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1601 vdp_run_context(context, target_cycles);
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1602 return;
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1603 } else {
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1604 vdp_run_context(context, min_dma_complete);
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1605 if (!(context->flags & FLAG_DMA_RUN)) {
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1606 return;
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1607 }
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1608 }
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1609 }
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1610 }
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1611
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1612 int vdp_control_port_write(vdp_context * context, uint16_t value)
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1613 {
471 f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	1614 //printf("control port write: %X at %d\n", value, context->cycles);
149 139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 143 diff changeset	1615 if (context->flags & FLAG_DMA_RUN) {
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 143 diff changeset	1616 return -1;
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 143 diff changeset	1617 }
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1618 if (context->flags & FLAG_PENDING) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1619 context->address = (context->address & 0x3FFF) \| (value << 14);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1620 context->cd = (context->cd & 0x3) \| ((value >> 2) & 0x3C);
75 108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1621 context->flags &= ~FLAG_PENDING;
453 b491df8bdbc0 Adjust VBLANK flag and refresh timing to be in line with logic analyzer and visual observations of direct color DMA demos. Remove debug print statements. Mike Pavone <pavone@retrodev.com> parents: 452 diff changeset	1622 //printf("New Address: %X, New CD: %X\n", context->address, context->cd);
327 1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	1623 if (context->cd & 0x20 && (context->regs[REG_MODE_2] & BIT_DMA_ENABLE)) {
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	1624 //
75 108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1625 if((context->regs[REG_DMASRC_H] & 0xC0) != 0x80) {
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1626 //DMA copy or 68K -> VDP, transfer starts immediately
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1627 context->flags \|= FLAG_DMA_RUN;
131 8fc8e46be691 Fix bug that was causing DMA fills to lock up under certain circumstances Mike Pavone <pavone@retrodev.com> parents: 109 diff changeset	1628 context->dma_cd = context->cd;
453 b491df8bdbc0 Adjust VBLANK flag and refresh timing to be in line with logic analyzer and visual observations of direct color DMA demos. Remove debug print statements. Mike Pavone <pavone@retrodev.com> parents: 452 diff changeset	1629 //printf("DMA start at cycle %d\n", context->cycles);
75 108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1630 if (!(context->regs[REG_DMASRC_H] & 0x80)) {
327 1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	1631 //printf("DMA Address: %X, New CD: %X, Source: %X, Length: %X\n", context->address, context->cd, (context->regs[REG_DMASRC_H] << 17) \| (context->regs[REG_DMASRC_M] << 9) \| (context->regs[REG_DMASRC_L] << 1), context->regs[REG_DMALEN_H] << 8 \| context->regs[REG_DMALEN_L]);
75 108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1632 return 1;
327 1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	1633 } else {
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	1634 //printf("DMA Copy Address: %X, New CD: %X, Source: %X\n", context->address, context->cd, (context->regs[REG_DMASRC_M] << 8) \| context->regs[REG_DMASRC_L]);
75 108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1635 }
327 1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	1636 } else {
453 b491df8bdbc0 Adjust VBLANK flag and refresh timing to be in line with logic analyzer and visual observations of direct color DMA demos. Remove debug print statements. Mike Pavone <pavone@retrodev.com> parents: 452 diff changeset	1637 //printf("DMA Fill Address: %X, New CD: %X\n", context->address, context->cd);
75 108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1638 }
63 a6dd5b7a971b Add FPS counter to console output Mike Pavone <pavone@retrodev.com> parents: 58 diff changeset	1639 }
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1640 } else {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1641 if ((value & 0xC000) == 0x8000) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1642 //Register write
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1643 uint8_t reg = (value >> 8) & 0x1F;
475 50e0cb475294 Don't allow register writes to regs above when in Mode 4 Mike Pavone <pavone@retrodev.com> parents: 474 diff changeset	1644 if (reg < (context->regs[REG_MODE_2] & BIT_MODE_5 ? VDP_REGS : 0xA)) {
453 b491df8bdbc0 Adjust VBLANK flag and refresh timing to be in line with logic analyzer and visual observations of direct color DMA demos. Remove debug print statements. Mike Pavone <pavone@retrodev.com> parents: 452 diff changeset	1645 //printf("register %d set to %X\n", reg, value & 0xFF);
480 0737953132ad Implement HV counter latch Mike Pavone <pavone@retrodev.com> parents: 479 diff changeset	1646 if (reg == REG_MODE_1 && (value & BIT_HVC_LATCH) && !(context->regs[reg] & BIT_HVC_LATCH)) {
0737953132ad Implement HV counter latch Mike Pavone <pavone@retrodev.com> parents: 479 diff changeset	1647 context->hv_latch = vdp_hv_counter_read(context);
0737953132ad Implement HV counter latch Mike Pavone <pavone@retrodev.com> parents: 479 diff changeset	1648 }
505 b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1649 if (reg == REG_BG_COLOR) {
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1650 value &= 0x3F;
b7b7a1cab44a The local clone on my laptop got messed up and some changes had not been pushed. This commit represents the status of the working copy from that clone. It unfortunately contains some changes that I did not intend to commit yet, but this seems like the best option at the moment. Michael Pavone <pavone@retrodev.com> parents: 503 diff changeset	1651 }
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1652 context->regs[reg] = value;
413 36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	1653 if (reg == REG_MODE_4) {
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	1654 context->double_res = (value & (BIT_INTERLACE \| BIT_DOUBLE_RES)) == (BIT_INTERLACE \| BIT_DOUBLE_RES);
415 8c60c8c09a0f Fix sprite y mask in interlace mode. Fix framebuffer selection when switching out of interlace mode. Mike Pavone <pavone@retrodev.com> parents: 414 diff changeset	1655 if (!context->double_res) {
8c60c8c09a0f Fix sprite y mask in interlace mode. Fix framebuffer selection when switching out of interlace mode. Mike Pavone <pavone@retrodev.com> parents: 414 diff changeset	1656 context->framebuf = context->oddbuf;
8c60c8c09a0f Fix sprite y mask in interlace mode. Fix framebuffer selection when switching out of interlace mode. Mike Pavone <pavone@retrodev.com> parents: 414 diff changeset	1657 }
680 4996369f1463 Some small synchronization improvements that do not seem to fix anything Michael Pavone <pavone@retrodev.com> parents: 678 diff changeset	1658 }
476 5d7bc113653b Clear the low 2 bits of CD when a register is written to Mike Pavone <pavone@retrodev.com> parents: 475 diff changeset	1659 context->cd &= 0x3C;
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1660 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1661 } else {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1662 context->flags \|= FLAG_PENDING;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1663 context->address = (context->address &0xC000) \| (value & 0x3FFF);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1664 context->cd = (context->cd &0x3C) \| (value >> 14);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1665 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1666 }
75 108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1667 return 0;
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1668 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1669
149 139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 143 diff changeset	1670 int vdp_data_port_write(vdp_context * context, uint16_t value)
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1671 {
471 f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	1672 //printf("data port write: %X at %d\n", value, context->cycles);
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	1673 if (context->flags & FLAG_DMA_RUN && (context->regs[REG_DMASRC_H] & 0xC0) != 0x80) {
149 139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 143 diff changeset	1674 return -1;
139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 143 diff changeset	1675 }
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1676 context->flags &= ~FLAG_PENDING;
109 004dd46e0a97 COmment out fifo full debug printf Mike Pavone <pavone@retrodev.com> parents: 108 diff changeset	1677 /*if (context->fifo_cur == context->fifo_end) {
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1678 printf("FIFO full, waiting for space before next write at cycle %X\n", context->cycles);
109 004dd46e0a97 COmment out fifo full debug printf Mike Pavone <pavone@retrodev.com> parents: 108 diff changeset	1679 }*/
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	1680 if (context->cd & 0x20 && (context->regs[REG_DMASRC_H] & 0xC0) == 0x80) {
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	1681 context->flags &= ~FLAG_DMA_RUN;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	1682 }
471 f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	1683 while (context->fifo_write == context->fifo_read) {
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1684 vdp_run_context(context, context->cycles + ((context->regs[REG_MODE_4] & BIT_H40) ? 16 : 20));
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1685 }
471 f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	1686 fifo_entry * cur = context->fifo + context->fifo_write;
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1687 cur->cycle = context->cycles + ((context->regs[REG_MODE_4] & BIT_H40) ? 16 : 20)*FIFO_LATENCY;
471 f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	1688 cur->address = context->address;
f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	1689 cur->value = value;
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	1690 if (context->cd & 0x20 && (context->regs[REG_DMASRC_H] & 0xC0) == 0x80) {
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	1691 context->flags \|= FLAG_DMA_RUN;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	1692 }
471 f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	1693 cur->cd = context->cd;
f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	1694 cur->partial = 0;
f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	1695 if (context->fifo_read < 0) {
f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	1696 context->fifo_read = context->fifo_write;
f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	1697 }
f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	1698 context->fifo_write = (context->fifo_write + 1) & (FIFO_SIZE-1);
138 aa3e1bb338c9 Fix VDP reads Mike Pavone <pavone@retrodev.com> parents: 137 diff changeset	1699 context->address += context->regs[REG_AUTOINC];
149 139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 143 diff changeset	1700 return 0;
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1701 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1702
470 541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM. Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	1703 void vdp_test_port_write(vdp_context * context, uint16_t value)
541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM. Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	1704 {
541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM. Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	1705 //TODO: implement test register
541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM. Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	1706 }
541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM. Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	1707
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1708 uint16_t vdp_control_port_read(vdp_context * context)
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1709 {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1710 context->flags &= ~FLAG_PENDING;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1711 uint16_t value = 0x3400;
471 f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	1712 if (context->fifo_read < 0) {
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1713 value \|= 0x200;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1714 }
471 f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	1715 if (context->fifo_read == context->fifo_write) {
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1716 value \|= 0x100;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1717 }
317 e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1718 if (context->flags2 & FLAG2_VINT_PENDING) {
413 36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	1719 value \|= 0x80;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	1720 }
494 8ac0eb05642c Initial implementation of sprite overflow and sprite collision status register flags Mike Pavone <pavone@retrodev.com> parents: 481 diff changeset	1721 if (context->flags & FLAG_DOT_OFLOW) {
8ac0eb05642c Initial implementation of sprite overflow and sprite collision status register flags Mike Pavone <pavone@retrodev.com> parents: 481 diff changeset	1722 value \|= 0x40;
8ac0eb05642c Initial implementation of sprite overflow and sprite collision status register flags Mike Pavone <pavone@retrodev.com> parents: 481 diff changeset	1723 }
8ac0eb05642c Initial implementation of sprite overflow and sprite collision status register flags Mike Pavone <pavone@retrodev.com> parents: 481 diff changeset	1724 if (context->flags2 & FLAG2_SPRITE_COLLIDE) {
8ac0eb05642c Initial implementation of sprite overflow and sprite collision status register flags Mike Pavone <pavone@retrodev.com> parents: 481 diff changeset	1725 value \|= 0x20;
8ac0eb05642c Initial implementation of sprite overflow and sprite collision status register flags Mike Pavone <pavone@retrodev.com> parents: 481 diff changeset	1726 //TODO: Test when this is actually cleared
8ac0eb05642c Initial implementation of sprite overflow and sprite collision status register flags Mike Pavone <pavone@retrodev.com> parents: 481 diff changeset	1727 context->flags2 &= ~FLAG2_SPRITE_COLLIDE;
8ac0eb05642c Initial implementation of sprite overflow and sprite collision status register flags Mike Pavone <pavone@retrodev.com> parents: 481 diff changeset	1728 }
413 36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	1729 if ((context->regs[REG_MODE_4] & BIT_INTERLACE) && context->framebuf == context->oddbuf) {
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	1730 value \|= 0x10;
317 e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1731 }
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1732 uint32_t line= context->vcounter;
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1733 uint32_t slot = context->hslot;
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1734 if (
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1735 (
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1736 line >= (context->latched_mode & BIT_PAL ? PAL_INACTIVE_START : NTSC_INACTIVE_START)
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1737 && line < 0x1FF
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1738 )
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1739 \|\| !(context->regs[REG_MODE_2] & BIT_DISP_EN)
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1740 ) {
318 789f2f5f2277 Implement hblank flag in status register Mike Pavone <pavone@retrodev.com> parents: 317 diff changeset	1741 value \|= 0x8;
789f2f5f2277 Implement hblank flag in status register Mike Pavone <pavone@retrodev.com> parents: 317 diff changeset	1742 }
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1743 if (context->regs[REG_MODE_4] & BIT_H40) {
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1744 if (slot < HBLANK_END_H40 \|\| slot > HBLANK_START_H40) {
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1745 value \|= 0x4;
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1746 }
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1747 } else {
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1748 if (slot < HBLANK_END_H32 \|\| slot > HBLANK_START_H32) {
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1749 value \|= 0x4;
b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1750 }
318 789f2f5f2277 Implement hblank flag in status register Mike Pavone <pavone@retrodev.com> parents: 317 diff changeset	1751 }
149 139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 143 diff changeset	1752 if (context->flags & FLAG_DMA_RUN) {
141 576f55711d8d Fix DMA in progress flag in VDP status register Mike Pavone <pavone@retrodev.com> parents: 138 diff changeset	1753 value \|= 0x2;
75 108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1754 }
317 e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1755 if (context->latched_mode & BIT_PAL) {//Not sure about this, need to verify
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1756 value \|= 0x1;
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1757 }
459 c49ecf575784 Revert change to VBLANK flag timing based on new direct color DMA test Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	1758 //printf("status read at cycle %d returned %X\n", context->cycles, value);
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1759 return value;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1760 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1761
470 541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM. Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	1762 #define CRAM_BITS 0xEEE
474 e128e55710bd Remove read pending stuff, that had been added in an attempt to fix CRAM/VSRAM undefined bit results. Set number of bits actually saved in VSRAM to 11 Mike Pavone <pavone@retrodev.com> parents: 473 diff changeset	1763 #define VSRAM_BITS 0x7FF
471 f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	1764 #define VSRAM_DIRTY_BITS 0xF800
470 541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM. Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	1765
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1766 uint16_t vdp_data_port_read(vdp_context * context)
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1767 {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1768 context->flags &= ~FLAG_PENDING;
138 aa3e1bb338c9 Fix VDP reads Mike Pavone <pavone@retrodev.com> parents: 137 diff changeset	1769 if (context->cd & 1) {
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1770 return 0;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1771 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1772 //Not sure if the FIFO should be drained before processing a read or not, but it would make sense
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1773 context->flags &= ~FLAG_UNUSED_SLOT;
474 e128e55710bd Remove read pending stuff, that had been added in an attempt to fix CRAM/VSRAM undefined bit results. Set number of bits actually saved in VSRAM to 11 Mike Pavone <pavone@retrodev.com> parents: 473 diff changeset	1774 //context->flags2 \|= FLAG2_READ_PENDING;
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1775 while (!(context->flags & FLAG_UNUSED_SLOT)) {
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1776 vdp_run_context(context, context->cycles + ((context->regs[REG_MODE_4] & BIT_H40) ? 16 : 20));
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1777 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1778 uint16_t value = 0;
138 aa3e1bb338c9 Fix VDP reads Mike Pavone <pavone@retrodev.com> parents: 137 diff changeset	1779 switch (context->cd & 0xF)
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1780 {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1781 case VRAM_READ:
472 93dc0382fd70 Fix VSRAM reads Mike Pavone <pavone@retrodev.com> parents: 471 diff changeset	1782 value = context->vdpmem[context->address & 0xFFFE] << 8;
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1783 context->flags &= ~FLAG_UNUSED_SLOT;
470 541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM. Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	1784 context->flags2 \|= FLAG2_READ_PENDING;
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1785 while (!(context->flags & FLAG_UNUSED_SLOT)) {
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1786 vdp_run_context(context, context->cycles + ((context->regs[REG_MODE_4] & BIT_H40) ? 16 : 20));
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1787 }
472 93dc0382fd70 Fix VSRAM reads Mike Pavone <pavone@retrodev.com> parents: 471 diff changeset	1788 value \|= context->vdpmem[context->address \| 1];
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1789 break;
473 1358045c0bdd Implement undocumented 8-bit VRAM read Mike Pavone <pavone@retrodev.com> parents: 472 diff changeset	1790 case VRAM_READ8:
1358045c0bdd Implement undocumented 8-bit VRAM read Mike Pavone <pavone@retrodev.com> parents: 472 diff changeset	1791 value = context->vdpmem[context->address ^ 1];
1358045c0bdd Implement undocumented 8-bit VRAM read Mike Pavone <pavone@retrodev.com> parents: 472 diff changeset	1792 value \|= context->fifo[context->fifo_write].value & 0xFF00;
1358045c0bdd Implement undocumented 8-bit VRAM read Mike Pavone <pavone@retrodev.com> parents: 472 diff changeset	1793 break;
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1794 case CRAM_READ:
470 541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM. Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	1795 value = context->cram[(context->address/2) & (CRAM_SIZE-1)] & CRAM_BITS;
471 f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	1796 value \|= context->fifo[context->fifo_write].value & ~CRAM_BITS;
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1797 break;
479 863e868752cf Implement funny behavior for DMA fill to CRAM and VSRAM. Return VSRAM address 0 for reads to VSRAM at >= 40 Mike Pavone <pavone@retrodev.com> parents: 478 diff changeset	1798 case VSRAM_READ: {
863e868752cf Implement funny behavior for DMA fill to CRAM and VSRAM. Return VSRAM address 0 for reads to VSRAM at >= 40 Mike Pavone <pavone@retrodev.com> parents: 478 diff changeset	1799 uint16_t address = (context->address /2) & 63;
863e868752cf Implement funny behavior for DMA fill to CRAM and VSRAM. Return VSRAM address 0 for reads to VSRAM at >= 40 Mike Pavone <pavone@retrodev.com> parents: 478 diff changeset	1800 if (address >= VSRAM_SIZE) {
863e868752cf Implement funny behavior for DMA fill to CRAM and VSRAM. Return VSRAM address 0 for reads to VSRAM at >= 40 Mike Pavone <pavone@retrodev.com> parents: 478 diff changeset	1801 address = 0;
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1802 }
479 863e868752cf Implement funny behavior for DMA fill to CRAM and VSRAM. Return VSRAM address 0 for reads to VSRAM at >= 40 Mike Pavone <pavone@retrodev.com> parents: 478 diff changeset	1803 value = context->vsram[address] & VSRAM_BITS;
863e868752cf Implement funny behavior for DMA fill to CRAM and VSRAM. Return VSRAM address 0 for reads to VSRAM at >= 40 Mike Pavone <pavone@retrodev.com> parents: 478 diff changeset	1804 value \|= context->fifo[context->fifo_write].value & VSRAM_DIRTY_BITS;
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1805 break;
479 863e868752cf Implement funny behavior for DMA fill to CRAM and VSRAM. Return VSRAM address 0 for reads to VSRAM at >= 40 Mike Pavone <pavone@retrodev.com> parents: 478 diff changeset	1806 }
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1807 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1808 context->address += context->regs[REG_AUTOINC];
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1809 return value;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1810 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1811
137 0e7e1ccc0a81 Implemented HV counter Mike Pavone <pavone@retrodev.com> parents: 135 diff changeset	1812 uint16_t vdp_hv_counter_read(vdp_context * context)
0e7e1ccc0a81 Implemented HV counter Mike Pavone <pavone@retrodev.com> parents: 135 diff changeset	1813 {
480 0737953132ad Implement HV counter latch Mike Pavone <pavone@retrodev.com> parents: 479 diff changeset	1814 if (context->regs[REG_MODE_1] & BIT_HVC_LATCH) {
0737953132ad Implement HV counter latch Mike Pavone <pavone@retrodev.com> parents: 479 diff changeset	1815 return context->hv_latch;
0737953132ad Implement HV counter latch Mike Pavone <pavone@retrodev.com> parents: 479 diff changeset	1816 }
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1817 uint32_t line= context->vcounter & 0xFF;
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1818 uint32_t linecyc = context->hslot;
137 0e7e1ccc0a81 Implemented HV counter Mike Pavone <pavone@retrodev.com> parents: 135 diff changeset	1819 linecyc &= 0xFF;
413 36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	1820 if (context->double_res) {
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	1821 line <<= 1;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	1822 if (line & 0x100) {
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	1823 line \|= 1;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	1824 }
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	1825 }
137 0e7e1ccc0a81 Implemented HV counter Mike Pavone <pavone@retrodev.com> parents: 135 diff changeset	1826 return (line << 8) \| linecyc;
0e7e1ccc0a81 Implemented HV counter Mike Pavone <pavone@retrodev.com> parents: 135 diff changeset	1827 }
0e7e1ccc0a81 Implemented HV counter Mike Pavone <pavone@retrodev.com> parents: 135 diff changeset	1828
470 541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM. Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	1829 uint16_t vdp_test_port_read(vdp_context * context)
541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM. Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	1830 {
541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM. Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	1831 //TODO: Find out what actually gets returned here
541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM. Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	1832 return 0xFFFF;
541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM. Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	1833 }
541c1ae8abf3 Properly delay 68K on VDP reads. Dummy VDP test port implementation. Initial stab at handling undefined bits of VSRAM and CRAM. Mike Pavone <pavone@retrodev.com> parents: 467 diff changeset	1834
65 aef6302770c2 Fix issue in which VDP would have trouble emptying FIFO because the VDP cycle count got reset at end of frame. Mike Pavone <pavone@retrodev.com> parents: 63 diff changeset	1835 void vdp_adjust_cycles(vdp_context * context, uint32_t deduction)
aef6302770c2 Fix issue in which VDP would have trouble emptying FIFO because the VDP cycle count got reset at end of frame. Mike Pavone <pavone@retrodev.com> parents: 63 diff changeset	1836 {
aef6302770c2 Fix issue in which VDP would have trouble emptying FIFO because the VDP cycle count got reset at end of frame. Mike Pavone <pavone@retrodev.com> parents: 63 diff changeset	1837 context->cycles -= deduction;
471 f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	1838 if (context->fifo_read >= 0) {
f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	1839 int32_t idx = context->fifo_read;
f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	1840 do {
f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	1841 if (context->fifo[idx].cycle >= deduction) {
f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	1842 context->fifo[idx].cycle -= deduction;
f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	1843 } else {
f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	1844 context->fifo[idx].cycle = 0;
f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	1845 }
f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	1846 idx = (idx+1) & (FIFO_SIZE-1);
f065769836e8 Implement FIFO as a ring buffer so the behavior of reads from invalid CRAM and VSRAM bits can be implemented properly Mike Pavone <pavone@retrodev.com> parents: 470 diff changeset	1847 } while(idx != context->fifo_write);
65 aef6302770c2 Fix issue in which VDP would have trouble emptying FIFO because the VDP cycle count got reset at end of frame. Mike Pavone <pavone@retrodev.com> parents: 63 diff changeset	1848 }
aef6302770c2 Fix issue in which VDP would have trouble emptying FIFO because the VDP cycle count got reset at end of frame. Mike Pavone <pavone@retrodev.com> parents: 63 diff changeset	1849 }
aef6302770c2 Fix issue in which VDP would have trouble emptying FIFO because the VDP cycle count got reset at end of frame. Mike Pavone <pavone@retrodev.com> parents: 63 diff changeset	1850
623 66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1851 uint32_t vdp_cycles_next_line(vdp_context * context)
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1852 {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1853 if (context->regs[REG_MODE_4] & BIT_H40) {
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1854 if (context->hslot < LINE_CHANGE_H40) {
697 7f96bd1cb1be Sync fixes and logging to fix more sync issues Michael Pavone <pavone@retrodev.com> parents: 680 diff changeset	1855 return (LINE_CHANGE_H40 - context->hslot) * MCLKS_SLOT_H40;
623 66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1856 } else if (context->hslot < 183) {
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1857 return MCLKS_LINE - (context->hslot - LINE_CHANGE_H40) * MCLKS_SLOT_H40;
678 a7971650c04e Adjusted h40_hsync_cycles so that lines actually take 3420 mclks. Fixed vdp_cycles_next_line to take h40_sync_cycles into account Michael Pavone <pavone@retrodev.com> parents: 647 diff changeset	1858 } else if (context->hslot < HSYNC_END_H40){
a7971650c04e Adjusted h40_hsync_cycles so that lines actually take 3420 mclks. Fixed vdp_cycles_next_line to take h40_sync_cycles into account Michael Pavone <pavone@retrodev.com> parents: 647 diff changeset	1859 uint32_t before_hsync = context->hslot < HSYNC_SLOT_H40 ? (HSYNC_SLOT_H40 - context->hslot) * MCLKS_SLOT_H40 : 0;
a7971650c04e Adjusted h40_hsync_cycles so that lines actually take 3420 mclks. Fixed vdp_cycles_next_line to take h40_sync_cycles into account Michael Pavone <pavone@retrodev.com> parents: 647 diff changeset	1860 uint32_t hsync = 0;
a7971650c04e Adjusted h40_hsync_cycles so that lines actually take 3420 mclks. Fixed vdp_cycles_next_line to take h40_sync_cycles into account Michael Pavone <pavone@retrodev.com> parents: 647 diff changeset	1861 for (int i = context->hslot <= HSYNC_SLOT_H40 ? 0 : context->hslot - HSYNC_SLOT_H40; i < sizeof(h40_hsync_cycles)/sizeof(uint32_t); i++)
a7971650c04e Adjusted h40_hsync_cycles so that lines actually take 3420 mclks. Fixed vdp_cycles_next_line to take h40_sync_cycles into account Michael Pavone <pavone@retrodev.com> parents: 647 diff changeset	1862 {
a7971650c04e Adjusted h40_hsync_cycles so that lines actually take 3420 mclks. Fixed vdp_cycles_next_line to take h40_sync_cycles into account Michael Pavone <pavone@retrodev.com> parents: 647 diff changeset	1863 hsync += h40_hsync_cycles[i];
a7971650c04e Adjusted h40_hsync_cycles so that lines actually take 3420 mclks. Fixed vdp_cycles_next_line to take h40_sync_cycles into account Michael Pavone <pavone@retrodev.com> parents: 647 diff changeset	1864 }
a7971650c04e Adjusted h40_hsync_cycles so that lines actually take 3420 mclks. Fixed vdp_cycles_next_line to take h40_sync_cycles into account Michael Pavone <pavone@retrodev.com> parents: 647 diff changeset	1865 uint32_t after_hsync = (256- HSYNC_END_H40 + LINE_CHANGE_H40) * MCLKS_SLOT_H40;
a7971650c04e Adjusted h40_hsync_cycles so that lines actually take 3420 mclks. Fixed vdp_cycles_next_line to take h40_sync_cycles into account Michael Pavone <pavone@retrodev.com> parents: 647 diff changeset	1866 return before_hsync + hsync + after_hsync;
623 66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1867 } else {
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1868 return (256-context->hslot + LINE_CHANGE_H40) * MCLKS_SLOT_H40;
623 66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1869 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1870 } else {
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1871 if (context->hslot < LINE_CHANGE_H32) {
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1872 return (LINE_CHANGE_H32 - context->hslot) * MCLKS_SLOT_H32;
623 66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1873 } else if (context->hslot < 148) {
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1874 return MCLKS_LINE - (context->hslot - LINE_CHANGE_H32) * MCLKS_SLOT_H32;
623 66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1875 } else {
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1876 return (256-context->hslot + LINE_CHANGE_H32) * MCLKS_SLOT_H32;
623 66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1877 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1878 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1879 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1880
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1881 uint32_t vdp_cycles_to_line(vdp_context * context, uint32_t target)
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1882 {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1883 uint32_t jump_start, jump_dst;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1884 if (context->flags2 & FLAG2_REGION_PAL) {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1885 if (context->latched_mode & BIT_PAL) {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1886 jump_start = 0x10B;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1887 jump_dst = 0x1D2;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1888 } else {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1889 jump_start = 0x103;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1890 jump_dst = 0x1CA;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1891 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1892 } else {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1893 if (context->latched_mode & BIT_PAL) {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1894 jump_start = 0;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1895 jump_dst = 0;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1896 } else {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1897 jump_start = 0xEB;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1898 jump_dst = 0x1E5;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1899 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1900 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1901 uint32_t lines;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1902 if (context->vcounter < target) {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1903 if (target < jump_start) {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1904 lines = target - context->vcounter;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1905 } else {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1906 lines = jump_start - context->vcounter + target - jump_dst;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1907 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1908 } else {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1909 if (context->vcounter < jump_start) {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1910 lines = jump_start - context->vcounter + 512 - jump_dst;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1911 } else {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1912 lines = 512 - context->vcounter;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1913 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1914 if (target < jump_start) {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1915 lines += target;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1916 } else {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1917 lines += jump_start + target - jump_dst;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1918 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1919 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1920 return MCLKS_LINE * (lines - 1) + vdp_cycles_next_line(context);
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1921 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1922
680 4996369f1463 Some small synchronization improvements that do not seem to fix anything Michael Pavone <pavone@retrodev.com> parents: 678 diff changeset	1923 uint32_t vdp_frame_end_line(vdp_context * context)
623 66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1924 {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1925 uint32_t frame_end;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1926 if (context->flags2 & FLAG2_REGION_PAL) {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1927 if (context->latched_mode & BIT_PAL) {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1928 frame_end = PAL_INACTIVE_START + 8;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1929 } else {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1930 frame_end = NTSC_INACTIVE_START + 8;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1931 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1932 } else {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1933 if (context->latched_mode & BIT_PAL) {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1934 frame_end = 512;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1935 } else {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1936 frame_end = NTSC_INACTIVE_START + 8;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1937 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1938 }
680 4996369f1463 Some small synchronization improvements that do not seem to fix anything Michael Pavone <pavone@retrodev.com> parents: 678 diff changeset	1939 return frame_end;
4996369f1463 Some small synchronization improvements that do not seem to fix anything Michael Pavone <pavone@retrodev.com> parents: 678 diff changeset	1940 }
4996369f1463 Some small synchronization improvements that do not seem to fix anything Michael Pavone <pavone@retrodev.com> parents: 678 diff changeset	1941
4996369f1463 Some small synchronization improvements that do not seem to fix anything Michael Pavone <pavone@retrodev.com> parents: 678 diff changeset	1942 uint32_t vdp_cycles_to_frame_end(vdp_context * context)
4996369f1463 Some small synchronization improvements that do not seem to fix anything Michael Pavone <pavone@retrodev.com> parents: 678 diff changeset	1943 {
4996369f1463 Some small synchronization improvements that do not seem to fix anything Michael Pavone <pavone@retrodev.com> parents: 678 diff changeset	1944 return context->cycles + vdp_cycles_to_line(context, vdp_frame_end_line(context));
4996369f1463 Some small synchronization improvements that do not seem to fix anything Michael Pavone <pavone@retrodev.com> parents: 678 diff changeset	1945 }
4996369f1463 Some small synchronization improvements that do not seem to fix anything Michael Pavone <pavone@retrodev.com> parents: 678 diff changeset	1946
317 e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1947 uint32_t vdp_next_hint(vdp_context * context)
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1948 {
327 1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	1949 if (!(context->regs[REG_MODE_1] & BIT_HINT_EN)) {
317 e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1950 return 0xFFFFFFFF;
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1951 }
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1952 if (context->flags2 & FLAG2_HINT_PENDING) {
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1953 return context->cycles;
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1954 }
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1955 uint32_t inactive_start = context->latched_mode & BIT_PAL ? PAL_INACTIVE_START : NTSC_INACTIVE_START;
623 66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1956 uint32_t hint_line;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1957 if (context->vcounter >= inactive_start) {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1958 hint_line = context->regs[REG_HINT];
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1959 } else {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1960 hint_line = context->vcounter + context->hint_counter + 1;
317 e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1961 }
623 66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1962
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1963 return context->cycles + vdp_cycles_to_line(context, hint_line);
317 e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1964 }
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1965
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1966 uint32_t vdp_next_vint(vdp_context * context)
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1967 {
327 1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	1968 if (!(context->regs[REG_MODE_2] & BIT_VINT_EN)) {
317 e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1969 return 0xFFFFFFFF;
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1970 }
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1971 if (context->flags2 & FLAG2_VINT_PENDING) {
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1972 return context->cycles;
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1973 }
623 66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1974
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1975
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1976 return vdp_next_vint_z80(context);
317 e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1977 }
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	1978
333 f16136a3835d Update Z80 vint timing Mike Pavone <pavone@retrodev.com> parents: 332 diff changeset	1979 uint32_t vdp_next_vint_z80(vdp_context * context)
f16136a3835d Update Z80 vint timing Mike Pavone <pavone@retrodev.com> parents: 332 diff changeset	1980 {
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	1981 uint32_t inactive_start = context->latched_mode & BIT_PAL ? PAL_INACTIVE_START : NTSC_INACTIVE_START;
623 66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1982 if (context->vcounter == inactive_start) {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1983 if (context->regs[REG_MODE_4] & BIT_H40) {
699 d8a1fdec68fc Fix frame counter increment and VINT cycle time calculation Michael Pavone <pavone@retrodev.com> parents: 697 diff changeset	1984 if (context->hslot >= LINE_CHANGE_H40) {
623 66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1985 if (context->hslot < 183) {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1986 return context->cycles + (VINT_SLOT_H40 + 183 - context->hslot + 256 - 229) * MCLKS_SLOT_H40;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1987 } else {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1988 return context->cycles + (VINT_SLOT_H40 + 256 - context->hslot) * MCLKS_SLOT_H40;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1989 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1990 } else if (context->hslot < VINT_SLOT_H40) {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1991 return context->cycles + (VINT_SLOT_H40 - context->hslot) * MCLKS_SLOT_H40;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1992 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1993 } else {
699 d8a1fdec68fc Fix frame counter increment and VINT cycle time calculation Michael Pavone <pavone@retrodev.com> parents: 697 diff changeset	1994 if (context->hslot >= LINE_CHANGE_H32) {
623 66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1995 if (context->hslot < 148) {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1996 return context->cycles + (VINT_SLOT_H32 + 148 - context->hslot + 256 - 233) * MCLKS_SLOT_H32;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1997 } else {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1998 return context->cycles + (VINT_SLOT_H32 + 256 - context->hslot) * MCLKS_SLOT_H32;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1999 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	2000 } else if (context->hslot < VINT_SLOT_H32) {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	2001 return context->cycles + (VINT_SLOT_H32 - context->hslot) * MCLKS_SLOT_H32;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	2002 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	2003 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	2004 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	2005 int32_t cycles_to_vint = vdp_cycles_to_line(context, inactive_start);
622 b76d2a628ab9 Partially working switch to having a vcounter and hslot counter in the context rather than trying to derive them from the cycle count. This should allow for more accurate handling of mid screen mode switches. Interrupt timing is broken currently though Michael Pavone <pavone@retrodev.com> parents: 621 diff changeset	2006 if (context->regs[REG_MODE_4] & BIT_H40) {
699 d8a1fdec68fc Fix frame counter increment and VINT cycle time calculation Michael Pavone <pavone@retrodev.com> parents: 697 diff changeset	2007 cycles_to_vint += (VINT_SLOT_H40 + 183 - LINE_CHANGE_H40 + 256 - 229) * MCLKS_SLOT_H40;
333 f16136a3835d Update Z80 vint timing Mike Pavone <pavone@retrodev.com> parents: 332 diff changeset	2008 } else {
699 d8a1fdec68fc Fix frame counter increment and VINT cycle time calculation Michael Pavone <pavone@retrodev.com> parents: 697 diff changeset	2009 cycles_to_vint += (VINT_SLOT_H32 + 148 - LINE_CHANGE_H32 + 256 - 233) * MCLKS_SLOT_H32;
333 f16136a3835d Update Z80 vint timing Mike Pavone <pavone@retrodev.com> parents: 332 diff changeset	2010 }
623 66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	2011 return context->cycles + cycles_to_vint;
333 f16136a3835d Update Z80 vint timing Mike Pavone <pavone@retrodev.com> parents: 332 diff changeset	2012 }
f16136a3835d Update Z80 vint timing Mike Pavone <pavone@retrodev.com> parents: 332 diff changeset	2013
317 e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	2014 void vdp_int_ack(vdp_context * context, uint16_t int_num)
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	2015 {
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	2016 if (int_num == 6) {
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	2017 context->flags2 &= ~FLAG2_VINT_PENDING;
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	2018 } else if(int_num ==4) {
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	2019 context->flags2 &= ~FLAG2_HINT_PENDING;
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	2020 }
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	2021 }
e5e8b48ad157 Initial stab at horizontal interrupts and improving accuracy of vertical interrupts. Also added the VINT pending flag to status port. Mike Pavone <pavone@retrodev.com> parents: 291 diff changeset	2022

Mercurial > repos > blastem

annotate vdp.c @ 705:ce4046476abc