repos/blastem: vdp.c annotate

annotate vdp.c @ 647:5d58dcd94733

Fix the HV counter and adjust the slots of certain VDP events

author	Michael Pavone <pavone@retrodev.com>
date	Sun, 14 Dec 2014 18:14:50 -0800
parents	9089951a1994
children	a7971650c04e

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
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	27 #define HSYNC_SLOT_H40 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	28 #define HSYNC_END_H40 (240+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
327 1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	212 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	213 {
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	214 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	215 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	216 "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	217 "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	218 "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	219 "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	220 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	221 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	222 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	223 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	224 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	225 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	226 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	227 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	228 "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	229 "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	230 "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	231 "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	232 "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	233 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	234 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	235 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	236 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	237 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	238 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	239 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	240 "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	241 "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	242 "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	243 "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	244 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	245 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	246 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	247 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	248 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	249 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	250 "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	251 "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	252 "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	253 "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	254 "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	255 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	256 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	257 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	258 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	259 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	260 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	261 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	262 printf("\nInternal Group\n"
b3cee2fe690b Add address/cd registers to VDP debug message Mike Pavone <pavone@retrodev.com> parents: 437 diff changeset	263 "Address: %X\n"
b3cee2fe690b Add address/cd registers to VDP debug message Mike Pavone <pavone@retrodev.com> parents: 437 diff changeset	264 "CD: %X\n"
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	265 "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	266 "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	267 "HCounter: %d\n",
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	268 context->address, context->cd, (context->flags & FLAG_PENDING) ? "true" : "false",
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	269 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	270
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	271 //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	272 }
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	273
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	274 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	275 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	276 if (context->sprite_index && context->slot_counter) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	277 line += 1;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	278 line &= 0xFF;
413 36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	279 uint16_t ymask, ymin;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	280 uint8_t height_mult;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	281 if (context->double_res) {
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	282 line *= 2;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	283 if (context->framebuf != context->oddbuf) {
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	284 line++;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	285 }
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	286 ymask = 0x3FF;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	287 ymin = 256;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	288 height_mult = 16;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	289 } else {
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	290 ymask = 0x1FF;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	291 ymin = 128;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	292 height_mult = 8;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	293 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	294 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	295 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	296 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	297 context->sprite_index = 0;
898e3d035f42 Implement sprite index >= sprite limit triggers sprite limit behavior Mike Pavone <pavone@retrodev.com> parents: 37 diff changeset	298 return;
898e3d035f42 Implement sprite index >= sprite limit triggers sprite limit behavior Mike Pavone <pavone@retrodev.com> parents: 37 diff changeset	299 }
898e3d035f42 Implement sprite index >= sprite limit triggers sprite limit behavior Mike Pavone <pavone@retrodev.com> parents: 37 diff changeset	300 } 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	301 context->sprite_index = 0;
898e3d035f42 Implement sprite index >= sprite limit triggers sprite limit behavior Mike Pavone <pavone@retrodev.com> parents: 37 diff changeset	302 return;
898e3d035f42 Implement sprite index >= sprite limit triggers sprite limit behavior Mike Pavone <pavone@retrodev.com> parents: 37 diff changeset	303 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	304 //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	305 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	306 uint16_t address = context->sprite_index * 8 + sat_address;
413 36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	307 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	308 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	309 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	310 //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	311 if (y <= line && line < (y + height)) {
27 aa1c47fab3f1 Fix sprite transparency for overlapping sprites Mike Pavone <pavone@retrodev.com> parents: 26 diff changeset	312 //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	313 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	314 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	315 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	316 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	317 context->sprite_index = context->vdpmem[address+3] & 0x7F;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	318 if (context->sprite_index && context->slot_counter)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	319 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	320 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	321 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	322 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	323 //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	324 if (y <= line && line < (y + height)) {
27 aa1c47fab3f1 Fix sprite transparency for overlapping sprites Mike Pavone <pavone@retrodev.com> parents: 26 diff changeset	325 //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	326 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	327 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	328 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	329 }
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	330 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	331 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	332 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	333 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	334
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	335 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	336 {
34 0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	337 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	338 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	339 line += 1;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	340 line &= 0xFF;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	341 //in tiles
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	342 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	343 //in pixels
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	344 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	345 if (context->double_res) {
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	346 line *= 2;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	347 if (context->framebuf != context->oddbuf) {
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	348 line++;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	349 }
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	350 height *= 2;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	351 }
34 0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	352 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	353 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	354 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	355 uint8_t row;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	356 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	357 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	358 } else {
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	359 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	360 }
413 36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	361 uint16_t address;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	362 if (context->double_res) {
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	363 address = ((tileinfo & 0x3FF) << 6) + row * 4;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	364 } else {
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	365 address = ((tileinfo & 0x7FF) << 5) + row * 4;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	366 }
323 8c01b4154480 Properly mask sprite X and Y coordinates Mike Pavone <pavone@retrodev.com> parents: 322 diff changeset	367 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	368 if (x) {
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	369 context->flags \|= FLAG_CAN_MASK;
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	370 } 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	371 context->flags \|= FLAG_MASKED;
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	372 }
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	373
36 04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	374 context->flags &= ~FLAG_DOT_OFLOW;
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	375 int16_t i;
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	376 if (context->flags & FLAG_MASKED) {
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	377 for (i=0; i < width && context->sprite_draws; i++) {
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	378 --context->sprite_draws;
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	379 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	380 }
36 04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	381 } else {
34 0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	382 x -= 128;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	383 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	384 int16_t dir;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	385 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	386 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	387 dir = -8;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	388 } else {
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	389 dir = 8;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	390 }
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	391 //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	392 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	393 --context->sprite_draws;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	394 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	395 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	396 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	397 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	398 }
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	399 }
36 04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	400 if (i < width) {
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	401 context->flags \|= FLAG_DOT_OFLOW;
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	402 }
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	403 context->cur_slot--;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	404 } else {
34 0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	405 context->flags \|= FLAG_DOT_OFLOW;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	406 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	407 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	408 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	409
427 2802318c14e1 Refactor duplicated CRAM writing code and fix a bug in the process Mike Pavone <pavone@retrodev.com> parents: 426 diff changeset	410 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	411 {
2802318c14e1 Refactor duplicated CRAM writing code and fix a bug in the process Mike Pavone <pavone@retrodev.com> parents: 426 diff changeset	412 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	413 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	414 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	415 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	416 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	417 }
2802318c14e1 Refactor duplicated CRAM writing code and fix a bug in the process Mike Pavone <pavone@retrodev.com> parents: 426 diff changeset	418
473 1358045c0bdd Implement undocumented 8-bit VRAM read Mike Pavone <pavone@retrodev.com> parents: 472 diff changeset	419 #define VRAM_READ 0 //0000
1358045c0bdd Implement undocumented 8-bit VRAM read Mike Pavone <pavone@retrodev.com> parents: 472 diff changeset	420 #define VRAM_WRITE 1 //0001
1358045c0bdd Implement undocumented 8-bit VRAM read Mike Pavone <pavone@retrodev.com> parents: 472 diff changeset	421 //2 would trigger register write 0010
1358045c0bdd Implement undocumented 8-bit VRAM read Mike Pavone <pavone@retrodev.com> parents: 472 diff changeset	422 #define CRAM_WRITE 3 //0011
1358045c0bdd Implement undocumented 8-bit VRAM read Mike Pavone <pavone@retrodev.com> parents: 472 diff changeset	423 #define VSRAM_READ 4 //0100
1358045c0bdd Implement undocumented 8-bit VRAM read Mike Pavone <pavone@retrodev.com> parents: 472 diff changeset	424 #define VSRAM_WRITE 5//0101
1358045c0bdd Implement undocumented 8-bit VRAM read Mike Pavone <pavone@retrodev.com> parents: 472 diff changeset	425 //6 would trigger regsiter write 0110
1358045c0bdd Implement undocumented 8-bit VRAM read Mike Pavone <pavone@retrodev.com> parents: 472 diff changeset	426 //7 is a mystery
1358045c0bdd Implement undocumented 8-bit VRAM read Mike Pavone <pavone@retrodev.com> parents: 472 diff changeset	427 #define CRAM_READ 8 //1000
1358045c0bdd Implement undocumented 8-bit VRAM read Mike Pavone <pavone@retrodev.com> parents: 472 diff changeset	428 //9 is also a mystery //1001
1358045c0bdd Implement undocumented 8-bit VRAM read Mike Pavone <pavone@retrodev.com> parents: 472 diff changeset	429 //A would trigger register write 1010
1358045c0bdd Implement undocumented 8-bit VRAM read Mike Pavone <pavone@retrodev.com> parents: 472 diff changeset	430 //B is a mystery 1011
1358045c0bdd Implement undocumented 8-bit VRAM read Mike Pavone <pavone@retrodev.com> parents: 472 diff changeset	431 #define VRAM_READ8 0xC //1100
1358045c0bdd Implement undocumented 8-bit VRAM read Mike Pavone <pavone@retrodev.com> parents: 472 diff changeset	432 //D is a mystery 1101
1358045c0bdd Implement undocumented 8-bit VRAM read Mike Pavone <pavone@retrodev.com> parents: 472 diff changeset	433 //E would trigger register write 1110
1358045c0bdd Implement undocumented 8-bit VRAM read Mike Pavone <pavone@retrodev.com> parents: 472 diff changeset	434 //F is a mystery 1111
75 108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	435 #define DMA_START 0x20
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	436
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	437 void external_slot(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	438 {
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	439 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	440 /*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	441 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	442 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	443 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	444 }*/
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	445 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	446 switch (start->cd & 0xF)
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	447 {
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	448 case VRAM_WRITE:
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	449 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	450 //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	451 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	452 } 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	453 //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	454 context->vdpmem[start->address] = start->value >> 8;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	455 start->partial = 1;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	456 //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	457 return;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	458 }
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	459 break;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	460 case CRAM_WRITE: {
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	461 //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	462 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	463 break;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	464 }
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	465 case VSRAM_WRITE:
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	466 if (((start->address/2) & 63) < VSRAM_SIZE) {
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	467 //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	468 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	469 }
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	470
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	471 break;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	472 }
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	473 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	474 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	475 context->fifo_read = -1;
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	476 }
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	477 } else {
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	478 context->flags \|= FLAG_UNUSED_SLOT;
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 }
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	481
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	482 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	483 {
75 108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	484 //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	485 //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	486 //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	487 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	488 return;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	489 }
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	490 fifo_entry * cur = NULL;
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	491 switch(context->regs[REG_DMASRC_H] & 0xC0)
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	492 {
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	493 //68K -> VDP
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	494 case 0:
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	495 case 0x40:
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	496 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	497 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	498 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	499 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	500 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	501 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	502 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	503 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	504 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	505 }
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	506 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	507 }
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	508 break;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	509 //Copy
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	510 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	511 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	512 //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	513 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	514 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	515 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	516 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	517 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	518 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	519 cur->cd = VRAM_WRITE;
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	520 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	521 }
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	522 break;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	523 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	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-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	526 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	527 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	528 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	529 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	530 }
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	531 break;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	532 }
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	533
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	534 if (cur) {
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	535 context->regs[REG_DMASRC_L] += 1;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	536 if (!context->regs[REG_DMASRC_L]) {
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	537 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	538 }
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	539 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	540 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	541 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	542 context->regs[REG_DMALEN_L] = dma_len;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	543 if (!dma_len) {
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	544 //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	545 context->flags &= ~FLAG_DMA_RUN;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	546 context->cd &= 0xF;
75 108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	547 }
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	548 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	549 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	550
40 7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	551 #define WINDOW_RIGHT 0x80
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	552 #define WINDOW_DOWN 0x80
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	553
25 4d0c20ad815a Fix vertical scroll value for plane B Mike Pavone <pavone@retrodev.com> parents: 24 diff changeset	554 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	555 {
417 acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	556 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	557 if (context->double_res) {
413 36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	558 line *= 2;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	559 if (context->framebuf != context->oddbuf) {
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	560 line++;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	561 }
417 acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	562 window_line_shift = 4;
acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	563 v_offset_mask = 0xF;
acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	564 vscroll_shift = 4;
acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	565 } else {
acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	566 window_line_shift = 3;
acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	567 v_offset_mask = 0x7;
acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	568 vscroll_shift = 3;
414 51ee0f117365 Fix vscroll calculation in double resultion interlace mode Mike Pavone <pavone@retrodev.com> parents: 413 diff changeset	569 }
40 7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	570 if (!vsram_off) {
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	571 uint16_t left_col, right_col;
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	572 if (context->regs[REG_WINDOW_H] & WINDOW_RIGHT) {
41 e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	573 left_col = (context->regs[REG_WINDOW_H] & 0x1F) * 2;
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	574 right_col = 42;
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	575 } else {
40 7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	576 left_col = 0;
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	577 right_col = (context->regs[REG_WINDOW_H] & 0x1F) * 2;
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	578 if (right_col) {
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	579 right_col += 2;
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	580 }
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	581 }
41 e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	582 uint16_t top_line, bottom_line;
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	583 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	584 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	585 bottom_line = context->double_res ? 481 : 241;
41 e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	586 } else {
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	587 top_line = 0;
417 acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	588 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	589 }
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	590 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	591 uint16_t address = context->regs[REG_WINDOW] << 10;
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	592 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	593 if (context->regs[REG_MODE_4] & BIT_H40) {
41 e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	594 address &= 0xF000;
417 acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	595 line_offset = (((line) >> vscroll_shift) * 64 * 2) & 0xFFF;
41 e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	596 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	597
41 e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	598 } else {
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	599 address &= 0xF800;
417 acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	600 line_offset = (((line) >> vscroll_shift) * 32 * 2) & 0xFFF;
41 e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	601 mask = 0x3F;
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	602 }
417 acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	603 if (context->double_res) {
acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	604 mask <<= 1;
acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	605 mask \|= 1;
acdd6c5240fe Fix window layer in double res interlace mode Mike Pavone <pavone@retrodev.com> parents: 415 diff changeset	606 }
42 6653e67a6811 Fix bug in tile address masking. Remove some debug code from window plane. Mike Pavone <pavone@retrodev.com> parents: 41 diff changeset	607 offset = address + line_offset + (((column - 2) * 2) & mask);
41 e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	608 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	609 //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	610 offset = address + line_offset + (((column - 1) * 2) & mask);
41 e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	611 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	612 context->v_offset = (line) & v_offset_mask;
41 e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	613 context->flags \|= FLAG_WINDOW;
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	614 return;
40 7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	615 }
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	616 context->flags &= ~FLAG_WINDOW;
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	617 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	618 uint16_t vscroll;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	619 switch(context->regs[REG_SCROLL] & 0x30)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	620 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	621 case 0:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	622 vscroll = 0xFF;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	623 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	624 case 0x10:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	625 vscroll = 0x1FF;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	626 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	627 case 0x20:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	628 //TODO: Verify this behavior
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	629 vscroll = 0;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	630 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	631 case 0x30:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	632 vscroll = 0x3FF;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	633 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	634 }
414 51ee0f117365 Fix vscroll calculation in double resultion interlace mode Mike Pavone <pavone@retrodev.com> parents: 413 diff changeset	635 if (context->double_res) {
413 36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	636 vscroll <<= 1;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	637 vscroll \|= 1;
414 51ee0f117365 Fix vscroll calculation in double resultion interlace mode Mike Pavone <pavone@retrodev.com> parents: 413 diff changeset	638 }
454 e9b6fe443bf2 Fix per-column scrolling bug Mike Pavone <pavone@retrodev.com> parents: 453 diff changeset	639 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	640 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	641 //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	642 vscroll >>= vscroll_shift;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	643 uint16_t hscroll_mask;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	644 uint16_t v_mul;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	645 switch(context->regs[REG_SCROLL] & 0x3)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	646 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	647 case 0:
108 1a551a85cb06 Fix horizontal mask values for scroll plane map address calculation Mike Pavone <pavone@retrodev.com> parents: 87 diff changeset	648 hscroll_mask = 0x1F;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	649 v_mul = 64;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	650 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	651 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	652 hscroll_mask = 0x3F;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	653 v_mul = 128;
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 case 0x2:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	656 //TODO: Verify this behavior
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	657 hscroll_mask = 0;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	658 v_mul = 0;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	659 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	660 case 0x3:
108 1a551a85cb06 Fix horizontal mask values for scroll plane map address calculation Mike Pavone <pavone@retrodev.com> parents: 87 diff changeset	661 hscroll_mask = 0x7F;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	662 v_mul = 256;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	663 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	664 }
28 037963b4c92d Fix BG plane B render bug Mike Pavone <pavone@retrodev.com> parents: 27 diff changeset	665 uint16_t hscroll, offset;
037963b4c92d Fix BG plane B render bug Mike Pavone <pavone@retrodev.com> parents: 27 diff changeset	666 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	667 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	668 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	669 //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	670 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	671 if (i) {
037963b4c92d Fix BG plane B render bug Mike Pavone <pavone@retrodev.com> parents: 27 diff changeset	672 context->col_2 = col_val;
037963b4c92d Fix BG plane B render bug Mike Pavone <pavone@retrodev.com> parents: 27 diff changeset	673 } else {
037963b4c92d Fix BG plane B render bug Mike Pavone <pavone@retrodev.com> parents: 27 diff changeset	674 context->col_1 = col_val;
037963b4c92d Fix BG plane B render bug Mike Pavone <pavone@retrodev.com> parents: 27 diff changeset	675 }
037963b4c92d Fix BG plane B render bug Mike Pavone <pavone@retrodev.com> parents: 27 diff changeset	676 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	677 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	678
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	679 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	680 {
25 4d0c20ad815a Fix vertical scroll value for plane B Mike Pavone <pavone@retrodev.com> parents: 24 diff changeset	681 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	682 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	683
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	684 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	685 {
25 4d0c20ad815a Fix vertical scroll value for plane B Mike Pavone <pavone@retrodev.com> parents: 24 diff changeset	686 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	687 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	688
436 e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	689 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	690 {
413 36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	691 uint16_t address;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	692 uint8_t shift, add;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	693 if (context->double_res) {
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	694 address = ((col & 0x3FF) << 6);
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	695 shift = 1;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	696 add = context->framebuf != context->oddbuf ? 1 : 0;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	697 } else {
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	698 address = ((col & 0x7FF) << 5);
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	699 shift = 0;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	700 add = 0;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	701 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	702 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	703 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	704 } else {
414 51ee0f117365 Fix vscroll calculation in double resultion interlace mode Mike Pavone <pavone@retrodev.com> parents: 413 diff changeset	705 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	706 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	707 uint16_t pal_priority = (col >> 9) & 0x70;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	708 int32_t dir;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	709 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	710 offset += 7;
e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	711 offset &= SCROLL_BUFFER_MASK;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	712 dir = -1;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	713 } else {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	714 dir = 1;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	715 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	716 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	717 {
436 e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	718 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	719 offset += dir;
e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	720 offset &= SCROLL_BUFFER_MASK;
e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	721 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	722 offset += dir;
e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	723 offset &= SCROLL_BUFFER_MASK;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	724 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	725 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	726
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	727 void render_map_1(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	728 {
436 e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	729 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	730 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	731
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	732 void render_map_2(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	733 {
436 e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	734 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	735 }
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 void render_map_3(vdp_context * context)
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 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	740 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	741
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	742 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	743 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	744 if (line >= 240) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	745 return;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	746 }
436 e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	747 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	748 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	749 uint32_t *dst32;
436 e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	750 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	751 int plane_a_off, plane_b_off;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	752 if (col)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	753 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	754 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	755 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	756 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	757 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	758 } 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	759 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	760 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	761 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	762 sprite_buf = context->linebuf + col * 8;
437 afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	763 uint8_t a_src, src;
40 7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	764 if (context->flags & FLAG_WINDOW) {
436 e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	765 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	766 a_src = DBG_SRC_W;
40 7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	767 } else {
436 e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	768 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	769 a_src = DBG_SRC_A;
40 7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	770 }
436 e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	771 plane_b_off = context->buf_b_off - (context->hscroll_b & 0xF);
30 03f9bb57cc54 Small cleanup Mike Pavone <pavone@retrodev.com> parents: 29 diff changeset	772 //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	773
230 d3266cee02c9 Implemented shadow hilight mode. Mike Pavone <pavone@retrodev.com> parents: 191 diff changeset	774 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	775 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	776 uint8_t pixel;
436 e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	777 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	778 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	779 uint32_t * colors = context->colors;
230 d3266cee02c9 Implemented shadow hilight mode. Mike Pavone <pavone@retrodev.com> parents: 191 diff changeset	780 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	781 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	782 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	783 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	784 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	785 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	786 }
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	787 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	788 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	789 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	790 }
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	791 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	792 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	793 if (sprite_color == 0x3E) {
437 afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	794 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	795 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	796 } 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	797 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	798 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	799 } 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	800 pixel = *sprite_buf;
437 afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	801 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	802 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	803 src \|= DBG_SHADOW;
437 afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	804 colors += CRAM_SIZE;
230 d3266cee02c9 Implemented shadow hilight mode. Mike Pavone <pavone@retrodev.com> parents: 191 diff changeset	805 }
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	806
230 d3266cee02c9 Implemented shadow hilight mode. Mike Pavone <pavone@retrodev.com> parents: 191 diff changeset	807 }
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	808 } 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	809 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	810 src \|= DBG_SHADOW;
230 d3266cee02c9 Implemented shadow hilight mode. Mike Pavone <pavone@retrodev.com> parents: 191 diff changeset	811 }
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	812 pixel &= 0x3F;
437 afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	813 uint32_t outpixel;
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	814 if (context->debug) {
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	815 outpixel = context->debugcolors[src];
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	816 } else {
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	817 outpixel = colors[pixel];
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	818 }
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	819 if (context->b32) {
437 afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	820 *(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	821 } else {
437 afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	822 *(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	823 }
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	824 //*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	825 }
230 d3266cee02c9 Implemented shadow hilight mode. Mike Pavone <pavone@retrodev.com> parents: 191 diff changeset	826 } else {
436 e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	827 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	828 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	829 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	830 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	831 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	832 if (*plane_b & 0xF) {
230 d3266cee02c9 Implemented shadow hilight mode. Mike Pavone <pavone@retrodev.com> parents: 191 diff changeset	833 pixel = *plane_b;
437 afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	834 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	835 }
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	836 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	837 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	838 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	839 }
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	840 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	841 pixel = *sprite_buf;
437 afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	842 src = DBG_SRC_S;
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	843 }
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	844 uint32_t outpixel;
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	845 if (context->debug) {
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	846 outpixel = context->debugcolors[src];
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	847 } else {
afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	848 outpixel = context->colors[pixel & 0x3F];
230 d3266cee02c9 Implemented shadow hilight mode. Mike Pavone <pavone@retrodev.com> parents: 191 diff changeset	849 }
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	850 if (context->b32) {
437 afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	851 *(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	852 } else {
437 afbea09d7fb4 Restore one of the VDP debugging modes Mike Pavone <pavone@retrodev.com> parents: 436 diff changeset	853 *(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	854 }
230 d3266cee02c9 Implemented shadow hilight mode. Mike Pavone <pavone@retrodev.com> parents: 191 diff changeset	855 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	856 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	857 }
436 e341fd5aa996 Implement the scroll ring buffer properly without memcpy Mike Pavone <pavone@retrodev.com> parents: 427 diff changeset	858 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	859 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	860 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	861
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	862 #define COLUMN_RENDER_BLOCK(column, startcyc) \
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	863 case startcyc:\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	864 read_map_scroll_a(column, line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	865 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	866 case (startcyc+1):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	867 external_slot(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	868 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	869 case (startcyc+2):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	870 render_map_1(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	871 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	872 case (startcyc+3):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	873 render_map_2(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	874 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	875 case (startcyc+4):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	876 read_map_scroll_b(column, line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	877 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	878 case (startcyc+5):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	879 read_sprite_x(line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	880 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	881 case (startcyc+6):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	882 render_map_3(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	883 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	884 case (startcyc+7):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	885 render_map_output(line, column, 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
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	888 #define COLUMN_RENDER_BLOCK_REFRESH(column, startcyc) \
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	889 case startcyc:\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	890 read_map_scroll_a(column, line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	891 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	892 case (startcyc+1):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	893 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	894 case (startcyc+2):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	895 render_map_1(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	896 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	897 case (startcyc+3):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	898 render_map_2(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	899 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	900 case (startcyc+4):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	901 read_map_scroll_b(column, line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	902 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	903 case (startcyc+5):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	904 read_sprite_x(line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	905 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	906 case (startcyc+6):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	907 render_map_3(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	908 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	909 case (startcyc+7):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	910 render_map_output(line, column, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	911 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	912
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	913 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	914 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	915 uint16_t address;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	916 uint32_t mask;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	917 switch(linecyc)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	918 {
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	919 case 165:
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	920 case 166:
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	921 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	922 break;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	923 //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	924 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	925 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	926 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	927 case 170:
329 fd5f6577db9b Implement first line/last line weirdness in VDP Mike Pavone <pavone@retrodev.com> parents: 328 diff changeset	928 if (line == 0xFF) {
fd5f6577db9b Implement first line/last line weirdness in VDP Mike Pavone <pavone@retrodev.com> parents: 328 diff changeset	929 external_slot(context);
fd5f6577db9b Implement first line/last line weirdness in VDP Mike Pavone <pavone@retrodev.com> parents: 328 diff changeset	930 } else {
fd5f6577db9b Implement first line/last line weirdness in VDP Mike Pavone <pavone@retrodev.com> parents: 328 diff changeset	931 render_sprite_cells(context);
fd5f6577db9b Implement first line/last line weirdness in VDP Mike Pavone <pavone@retrodev.com> parents: 328 diff changeset	932 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	933 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	934 //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	935 case 171:
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	936 render_sprite_cells( context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	937 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	938 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	939 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	940 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	941 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	942 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	943 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	944 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	945 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	946 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	947 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	948 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	949 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	950 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	951 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	952 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	953 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	954 case 233:
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	955 //!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	956 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	957 case 235:
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	958 render_sprite_cells(context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	959 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	960 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	961 case 236:
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	962 external_slot(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	963 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	964 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	965 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	966 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	967 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	968 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	969 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	970 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	971 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	972 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	973 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	974 case 247:
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	975 render_sprite_cells(context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	976 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	977 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	978 case 248:
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	979 address = (context->regs[REG_HSCROLL] & 0x3F) << 10;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	980 mask = 0;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	981 if (context->regs[REG_MODE_3] & 0x2) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	982 mask \|= 0xF8;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	983 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	984 if (context->regs[REG_MODE_3] & 0x1) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	985 mask \|= 0x7;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	986 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	987 line &= mask;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	988 address += line * 4;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	989 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	990 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	991 //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	992 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	993 case 249:
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	994 //!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	995 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	996 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	997 case 252:
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	998 render_sprite_cells(context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	999 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1000 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	1001 case 253:
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1002 read_map_scroll_a(0, line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1003 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	1004 case 254:
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	1005 render_sprite_cells(context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1006 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1007 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	1008 case 255:
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1009 render_map_1(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1010 scan_sprite_table(line, context);//Just a guess
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1011 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	1012 case 0:
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1013 render_map_2(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1014 scan_sprite_table(line, context);//Just a guess
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1015 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	1016 case 1:
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1017 read_map_scroll_b(0, line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1018 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	1019 case 2:
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	1020 render_sprite_cells(context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1021 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1022 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	1023 case 3:
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1024 render_map_3(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1025 scan_sprite_table(line, context);//Just a guess
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1026 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	1027 case 4:
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1028 render_map_output(line, 0, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1029 scan_sprite_table(line, context);//Just a guess
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1030 //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	1031 //filled rather than the number of available slots
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	1032 //context->slot_counter = MAX_SPRITES_LINE - context->slot_counter;
72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	1033 context->cur_slot = MAX_SPRITES_LINE-1;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1034 context->sprite_draws = MAX_DRAWS;
36 04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	1035 context->flags &= (~FLAG_CAN_MASK & ~FLAG_MASKED);
20 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 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	1038 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	1039 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	1040 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	1041 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	1042 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	1043 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	1044 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	1045 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	1046 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	1047 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	1048 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	1049 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	1050 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	1051 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	1052 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	1053 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	1054 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	1055 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	1056 COLUMN_RENDER_BLOCK_REFRESH(40, 157)
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1057 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1058 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1059
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1060 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	1061 {
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1062 uint16_t address;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1063 uint32_t mask;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1064 switch(linecyc)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1065 {
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1066 case 132:
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1067 case 133:
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1068 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	1069 break;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1070 //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	1071 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	1072 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	1073 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	1074 case 137:
329 fd5f6577db9b Implement first line/last line weirdness in VDP Mike Pavone <pavone@retrodev.com> parents: 328 diff changeset	1075 if (line == 0xFF) {
fd5f6577db9b Implement first line/last line weirdness in VDP Mike Pavone <pavone@retrodev.com> parents: 328 diff changeset	1076 external_slot(context);
fd5f6577db9b Implement first line/last line weirdness in VDP Mike Pavone <pavone@retrodev.com> parents: 328 diff changeset	1077 } else {
fd5f6577db9b Implement first line/last line weirdness in VDP Mike Pavone <pavone@retrodev.com> parents: 328 diff changeset	1078 render_sprite_cells(context);
fd5f6577db9b Implement first line/last line weirdness in VDP Mike Pavone <pavone@retrodev.com> parents: 328 diff changeset	1079 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1080 break;
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1081 //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	1082 case 138:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1083 render_sprite_cells( context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1084 scan_sprite_table(line, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1085 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	1086 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	1087 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	1088 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	1089 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	1090 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	1091 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	1092 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	1093 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	1094 case 147:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1095 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1096 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	1097 case 233:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1098 external_slot(context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1099 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	1100 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	1101 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	1102 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	1103 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	1104 case 238:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1105 //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	1106 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	1107 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	1108 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	1109 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	1110 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	1111 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	1112 case 245:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1113 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1114 scan_sprite_table(line, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1115 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	1116 case 246:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1117 external_slot(context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1118 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	1119 case 247:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1120 address = (context->regs[REG_HSCROLL] & 0x3F) << 10;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1121 mask = 0;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1122 if (context->regs[REG_MODE_3] & 0x2) {
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1123 mask \|= 0xF8;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1124 }
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1125 if (context->regs[REG_MODE_3] & 0x1) {
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1126 mask \|= 0x7;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1127 }
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1128 line &= mask;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1129 address += line * 4;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1130 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	1131 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	1132 //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	1133 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	1134 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	1135 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	1136 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	1137 case 251:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1138 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1139 scan_sprite_table(line, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1140 break;
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1141 //!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	1142 case 252:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1143 read_map_scroll_a(0, line, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1144 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	1145 case 253:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1146 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1147 scan_sprite_table(line, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1148 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	1149 case 254:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1150 render_map_1(context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1151 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	1152 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	1153 case 255:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1154 render_map_2(context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1155 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	1156 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	1157 case 0:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1158 read_map_scroll_b(0, line, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1159 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	1160 case 1:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1161 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1162 scan_sprite_table(line, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1163 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	1164 case 2:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1165 render_map_3(context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1166 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	1167 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	1168 case 3:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1169 render_map_output(line, 0, context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1170 scan_sprite_table(line, context);//Just a guess
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1171 //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	1172 //filled rather than the number of available slots
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1173 //context->slot_counter = MAX_SPRITES_LINE - context->slot_counter;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1174 context->cur_slot = MAX_SPRITES_LINE_H32-1;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1175 context->sprite_draws = MAX_DRAWS_H32;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	1176 context->flags &= (~FLAG_CAN_MASK & ~FLAG_MASKED);
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 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	1179 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	1180 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	1181 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	1182 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	1183 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	1184 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	1185 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	1186 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	1187 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	1188 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	1189 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	1190 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	1191 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	1192 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	1193 COLUMN_RENDER_BLOCK_REFRESH(32, 124)
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1194 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1195 }
503 eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1196
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1197 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	1198 {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1199 context->cur_slot = MAX_DRAWS-1;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1200 memset(context->linebuf, 0, LINEBUF_SIZE);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1201 if (line == 0xFF) {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1202 external_slot(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1203 if (context->flags & FLAG_DMA_RUN) {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1204 run_dma_src(context, 0);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1205 }
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1206 external_slot(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1207 if (context->flags & FLAG_DMA_RUN) {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1208 run_dma_src(context, 0);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1209 }
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1210 external_slot(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1211 if (context->flags & FLAG_DMA_RUN) {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1212 run_dma_src(context, 0);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1213 }
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1214 external_slot(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1215 if (context->flags & FLAG_DMA_RUN) {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1216 run_dma_src(context, 0);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1217 }
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1218 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	1219 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	1220 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	1221 }
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1222 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	1223 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	1224 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	1225 }
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	1226 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	1227 {
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	1228 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	1229 }
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	1230 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	1231 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	1232 {
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	1233 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	1234 }
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	1235 //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	1236 //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	1237 //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	1238 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	1239 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	1240 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	1241 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	1242 {
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	1243 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	1244 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	1245 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	1246 }
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 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	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 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	1250 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	1251 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	1252 }
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 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	1254
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 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	1256 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	1257 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	1258 }
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 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	1260
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 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	1262 }
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1263
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	1264 return;
503 eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1265 }
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1266 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	1267 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	1268 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	1269 }
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1270 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	1271 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	1272 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	1273 }
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	1274
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 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	1276 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	1277 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	1278 render_sprite_cells(context);
503 eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1279 context->sprite_index = 0x80;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1280 context->slot_counter = MAX_SPRITES_LINE;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1281 for (int i = 0; i < 19; i++)
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1282 {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1283 render_sprite_cells(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1284 scan_sprite_table(line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1285 }
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1286 external_slot(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1287 for (int i = 0; i < 11; i++)
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1288 {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1289 render_sprite_cells(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1290 scan_sprite_table(line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1291 }
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1292 uint16_t address;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1293 uint32_t mask;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1294 address = (context->regs[REG_HSCROLL] & 0x3F) << 10;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1295 mask = 0;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1296 if (context->regs[REG_MODE_3] & 0x2) {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1297 mask \|= 0xF8;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1298 }
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1299 if (context->regs[REG_MODE_3] & 0x1) {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1300 mask \|= 0x7;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1301 }
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1302 address += (line & mask) * 4;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1303 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	1304 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	1305 render_sprite_cells(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1306 scan_sprite_table(line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1307 render_sprite_cells(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1308 scan_sprite_table(line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1309 render_sprite_cells(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1310 scan_sprite_table(line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1311 render_sprite_cells(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1312 scan_sprite_table(line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1313
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1314 read_map_scroll_a(0, line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1315 render_sprite_cells(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1316 scan_sprite_table(line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1317 render_map_1(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1318 scan_sprite_table(line, context);//Just a guess
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1319 render_map_2(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1320 scan_sprite_table(line, context);//Just a guess
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1321 read_map_scroll_b(0, line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1322 render_sprite_cells(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1323 scan_sprite_table(line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1324 render_map_3(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1325 scan_sprite_table(line, context);//Just a guess
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1326 render_map_output(line, 0, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1327 scan_sprite_table(line, context);//Just a guess
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1328 //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	1329 //filled rather than the number of available slots
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1330 //context->slot_counter = MAX_SPRITES_LINE - context->slot_counter;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1331 context->cur_slot = MAX_SPRITES_LINE-1;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1332 context->sprite_draws = MAX_DRAWS;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1333 context->flags &= (~FLAG_CAN_MASK & ~FLAG_MASKED);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1334 for (int column = 2; column < 42; column += 2)
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1335 {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1336 read_map_scroll_a(column, line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1337 external_slot(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1338 if (context->flags & FLAG_DMA_RUN) {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1339 run_dma_src(context, 0);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1340 }
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1341 render_map_1(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1342 render_map_2(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1343 read_map_scroll_b(column, line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1344 read_sprite_x(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 render_map_output(line, column, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1347
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1348 column += 2;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1349 read_map_scroll_a(column, line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1350 external_slot(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1351 if (context->flags & FLAG_DMA_RUN) {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1352 run_dma_src(context, 0);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1353 }
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1354 render_map_1(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1355 render_map_2(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1356 read_map_scroll_b(column, line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1357 read_sprite_x(line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1358 render_map_3(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1359 render_map_output(line, column, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1360
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1361 column += 2;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1362 read_map_scroll_a(column, line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1363 external_slot(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1364 if (context->flags & FLAG_DMA_RUN) {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1365 run_dma_src(context, 0);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1366 }
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1367 render_map_1(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1368 render_map_2(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1369 read_map_scroll_b(column, line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1370 read_sprite_x(line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1371 render_map_3(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1372 render_map_output(line, column, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1373
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1374 column += 2;
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1375 read_map_scroll_a(column, line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1376 render_map_1(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1377 render_map_2(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1378 read_map_scroll_b(column, line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1379 read_sprite_x(line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1380 render_map_3(context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1381 render_map_output(line, column, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1382 }
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1383 }
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1384
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1385 void latch_mode(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1386 {
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	1387 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	1388 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1389
330 57453d3d8be4 Initial stab at implementing funky clock adjustments during HSYNC for H40 mode Mike Pavone <pavone@retrodev.com> parents: 329 diff changeset	1390 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	1391 {
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	1392 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	1393 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	1394 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	1395 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	1396 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	1397 }
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	1398 } 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	1399 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	1400 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	1401 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	1402 }
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	1403 }
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	1404 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	1405 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	1406 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	1407 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	1408 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	1409 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	1410 *(start++) = color;
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1411 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1412 } 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	1413 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	1414 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	1415 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	1416 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	1417 *(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	1418 }
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1419 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1420 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1421 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1422
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	1423 uint32_t h40_hsync_cycles[] = {19, 20, 20, 20, 18, 20, 20, 20, 18, 20, 20, 20, 18, 20, 20, 20, 19};
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
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1425 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	1426 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1427 while(context->cycles < target_cycles)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1428 {
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	1429 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	1430 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	1431 uint32_t inactive_start = context->latched_mode & BIT_PAL ? PAL_INACTIVE_START : NTSC_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	1432 uint32_t slot = 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	1433 //TODO: Figure out when this actually happens
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 if (!line && !slot) {
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1435 latch_mode(context);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1436 }
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1437
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	1438 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	1439 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	1440 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	1441 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	1442 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	1443 } 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	1444 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	1445 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	1446 }
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1447 } else {
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1448 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	1449 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	1450 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	1451 } 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	1452 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	1453 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	1454 }
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1455 }
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1456 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	1457 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	1458 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	1459 } 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	1460 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	1461 } 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	1462 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	1463 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	1464 }
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	1465 } 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	1466 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	1467 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	1468 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	1469 }
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	1470 }
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	1471 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	1472 //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	1473 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	1474 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	1475 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	1476 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	1477 } 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	1478 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	1479 }
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	1480 //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	1481 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	1482 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	1483 }
57453d3d8be4 Initial stab at implementing funky clock adjustments during HSYNC for H40 mode Mike Pavone <pavone@retrodev.com> parents: 329 diff changeset	1484 } else {
57453d3d8be4 Initial stab at implementing funky clock adjustments during HSYNC for H40 mode Mike Pavone <pavone@retrodev.com> parents: 329 diff changeset	1485 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	1486 //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	1487 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	1488 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	1489 }
330 57453d3d8be4 Initial stab at implementing funky clock adjustments during HSYNC for H40 mode Mike Pavone <pavone@retrodev.com> parents: 329 diff changeset	1490 }
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	1491 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	1492 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	1493 //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	1494 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	1495 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	1496 vdp_h40_line(line, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1497 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	1498 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	1499 inc_slot = 0;
503 eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1500 } else {
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1501 vdp_h40(line, slot, context);
eee6be465c47 Small optimization for H40 mode Mike Pavone <pavone@retrodev.com> parents: 499 diff changeset	1502 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1503 } else {
330 57453d3d8be4 Initial stab at implementing funky clock adjustments during HSYNC for H40 mode Mike Pavone <pavone@retrodev.com> parents: 329 diff changeset	1504 vdp_h32(line, slot, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1505 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1506 } else {
330 57453d3d8be4 Initial stab at implementing funky clock adjustments during HSYNC for H40 mode Mike Pavone <pavone@retrodev.com> parents: 329 diff changeset	1507 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	1508 external_slot(context);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1509 }
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	1510 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	1511 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	1512 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1513 }
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	1514 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	1515 run_dma_src(context, slot);
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	1516 }
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	1517 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	1518 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	1519 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	1520 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	1521 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	1522 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	1523 } 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	1524 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	1525 }
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	1526 } else {
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1527 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	1528 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	1529 } 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	1530 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	1531 }
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 }
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	1533
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	1534 }
623 66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1535 context->vcounter &= 0x1FF;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1536 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	1537 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	1538 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	1539 context->vcounter = 0x1D2;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1540 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1541 } 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	1542 context->vcounter = 0x1CA;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1543 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1544 } 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	1545 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	1546 }
330 57453d3d8be4 Initial stab at implementing funky clock adjustments during HSYNC for H40 mode Mike Pavone <pavone@retrodev.com> parents: 329 diff changeset	1547 context->cycles += inccycles;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1548 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1549 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1550
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1551 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	1552 {
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 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	1554 vdp_run_context(context, target_cycles);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1555 return context->cycles;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1556 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1557
75 108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1558 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	1559 {
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1560 for(;;) {
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1561 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	1562 if (!dmalen) {
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1563 dmalen = 0x10000;
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1564 }
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	1565 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	1566 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	1567 //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	1568 //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	1569 min_dma_complete *= 2;
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1570 }
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1571 min_dma_complete += context->cycles;
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1572 if (target_cycles < min_dma_complete) {
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1573 vdp_run_context(context, target_cycles);
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1574 return;
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1575 } else {
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1576 vdp_run_context(context, min_dma_complete);
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1577 if (!(context->flags & FLAG_DMA_RUN)) {
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1578 return;
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1579 }
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1580 }
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1581 }
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1582 }
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1583
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1584 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	1585 {
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	1586 //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	1587 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	1588 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	1589 }
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1590 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	1591 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	1592 context->cd = (context->cd & 0x3) \| ((value >> 2) & 0x3C);
75 108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1593 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	1594 //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	1595 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	1596 //
75 108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1597 if((context->regs[REG_DMASRC_H] & 0xC0) != 0x80) {
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1598 //DMA copy or 68K -> VDP, transfer starts immediately
108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1599 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	1600 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	1601 //printf("DMA start at cycle %d\n", context->cycles);
75 108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1602 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	1603 //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	1604 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	1605 } else {
1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	1606 //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	1607 }
327 1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	1608 } 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	1609 //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	1610 }
63 a6dd5b7a971b Add FPS counter to console output Mike Pavone <pavone@retrodev.com> parents: 58 diff changeset	1611 }
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1612 } else {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1613 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	1614 //Register write
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1615 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	1616 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	1617 //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	1618 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	1619 context->hv_latch = vdp_hv_counter_read(context);
0737953132ad Implement HV counter latch Mike Pavone <pavone@retrodev.com> parents: 479 diff changeset	1620 }
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	1621 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	1622 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	1623 }
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1624 context->regs[reg] = value;
413 36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	1625 if (reg == REG_MODE_4) {
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	1626 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	1627 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	1628 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	1629 }
413 36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	1630 }
476 5d7bc113653b Clear the low 2 bits of CD when a register is written to Mike Pavone <pavone@retrodev.com> parents: 475 diff changeset	1631 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	1632 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1633 } else {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1634 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	1635 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	1636 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	1637 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1638 }
75 108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1639 return 0;
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1640 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1641
149 139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 143 diff changeset	1642 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	1643 {
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	1644 //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	1645 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	1646 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	1647 }
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1648 context->flags &= ~FLAG_PENDING;
109 004dd46e0a97 COmment out fifo full debug printf Mike Pavone <pavone@retrodev.com> parents: 108 diff changeset	1649 /*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	1650 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	1651 }*/
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	1652 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	1653 context->flags &= ~FLAG_DMA_RUN;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	1654 }
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	1655 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	1656 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	1657 }
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	1658 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	1659 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	1660 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	1661 cur->value = value;
460 788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	1662 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	1663 context->flags \|= FLAG_DMA_RUN;
788ba843a731 Implement FIFO latency and improve DMA accuracy Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	1664 }
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	1665 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	1666 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	1667 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	1668 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	1669 }
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	1670 context->fifo_write = (context->fifo_write + 1) & (FIFO_SIZE-1);
138 aa3e1bb338c9 Fix VDP reads Mike Pavone <pavone@retrodev.com> parents: 137 diff changeset	1671 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	1672 return 0;
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1673 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1674
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	1675 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	1676 {
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	1677 //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	1678 }
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	1679
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1680 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	1681 {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1682 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	1683 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	1684 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	1685 value \|= 0x200;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1686 }
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	1687 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	1688 value \|= 0x100;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1689 }
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	1690 if (context->flags2 & FLAG2_VINT_PENDING) {
413 36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	1691 value \|= 0x80;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	1692 }
494 8ac0eb05642c Initial implementation of sprite overflow and sprite collision status register flags Mike Pavone <pavone@retrodev.com> parents: 481 diff changeset	1693 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	1694 value \|= 0x40;
8ac0eb05642c Initial implementation of sprite overflow and sprite collision status register flags Mike Pavone <pavone@retrodev.com> parents: 481 diff changeset	1695 }
8ac0eb05642c Initial implementation of sprite overflow and sprite collision status register flags Mike Pavone <pavone@retrodev.com> parents: 481 diff changeset	1696 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	1697 value \|= 0x20;
8ac0eb05642c Initial implementation of sprite overflow and sprite collision status register flags Mike Pavone <pavone@retrodev.com> parents: 481 diff changeset	1698 //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	1699 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	1700 }
413 36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	1701 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	1702 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	1703 }
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	1704 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	1705 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	1706 if (
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1707 (
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1708 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	1709 && line < 0x1FF
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1710 )
5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1711 \|\| !(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	1712 ) {
318 789f2f5f2277 Implement hblank flag in status register Mike Pavone <pavone@retrodev.com> parents: 317 diff changeset	1713 value \|= 0x8;
789f2f5f2277 Implement hblank flag in status register Mike Pavone <pavone@retrodev.com> parents: 317 diff changeset	1714 }
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	1715 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	1716 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	1717 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	1718 }
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	1719 } 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	1720 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	1721 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	1722 }
318 789f2f5f2277 Implement hblank flag in status register Mike Pavone <pavone@retrodev.com> parents: 317 diff changeset	1723 }
149 139e5dcd6aa3 Make writes to control and data port block when DMA is in progress Mike Pavone <pavone@retrodev.com> parents: 143 diff changeset	1724 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	1725 value \|= 0x2;
75 108e587165c0 Implement DMA (untested) Mike Pavone <pavone@retrodev.com> parents: 65 diff changeset	1726 }
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	1727 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	1728 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	1729 }
459 c49ecf575784 Revert change to VBLANK flag timing based on new direct color DMA test Mike Pavone <pavone@retrodev.com> parents: 454 diff changeset	1730 //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	1731 return value;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1732 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1733
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	1734 #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	1735 #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	1736 #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	1737
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1738 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	1739 {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1740 context->flags &= ~FLAG_PENDING;
138 aa3e1bb338c9 Fix VDP reads Mike Pavone <pavone@retrodev.com> parents: 137 diff changeset	1741 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	1742 return 0;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1743 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1744 //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	1745 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	1746 //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	1747 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	1748 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	1749 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1750 uint16_t value = 0;
138 aa3e1bb338c9 Fix VDP reads Mike Pavone <pavone@retrodev.com> parents: 137 diff changeset	1751 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	1752 {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1753 case VRAM_READ:
472 93dc0382fd70 Fix VSRAM reads Mike Pavone <pavone@retrodev.com> parents: 471 diff changeset	1754 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	1755 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	1756 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	1757 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	1758 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	1759 }
472 93dc0382fd70 Fix VSRAM reads Mike Pavone <pavone@retrodev.com> parents: 471 diff changeset	1760 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	1761 break;
473 1358045c0bdd Implement undocumented 8-bit VRAM read Mike Pavone <pavone@retrodev.com> parents: 472 diff changeset	1762 case VRAM_READ8:
1358045c0bdd Implement undocumented 8-bit VRAM read Mike Pavone <pavone@retrodev.com> parents: 472 diff changeset	1763 value = context->vdpmem[context->address ^ 1];
1358045c0bdd Implement undocumented 8-bit VRAM read Mike Pavone <pavone@retrodev.com> parents: 472 diff changeset	1764 value \|= context->fifo[context->fifo_write].value & 0xFF00;
1358045c0bdd Implement undocumented 8-bit VRAM read Mike Pavone <pavone@retrodev.com> parents: 472 diff changeset	1765 break;
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1766 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	1767 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	1768 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	1769 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	1770 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	1771 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	1772 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	1773 address = 0;
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1774 }
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	1775 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	1776 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	1777 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	1778 }
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1779 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1780 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	1781 return value;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1782 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	1783
137 0e7e1ccc0a81 Implemented HV counter Mike Pavone <pavone@retrodev.com> parents: 135 diff changeset	1784 uint16_t vdp_hv_counter_read(vdp_context * context)
0e7e1ccc0a81 Implemented HV counter Mike Pavone <pavone@retrodev.com> parents: 135 diff changeset	1785 {
480 0737953132ad Implement HV counter latch Mike Pavone <pavone@retrodev.com> parents: 479 diff changeset	1786 if (context->regs[REG_MODE_1] & BIT_HVC_LATCH) {
0737953132ad Implement HV counter latch Mike Pavone <pavone@retrodev.com> parents: 479 diff changeset	1787 return context->hv_latch;
0737953132ad Implement HV counter latch Mike Pavone <pavone@retrodev.com> parents: 479 diff changeset	1788 }
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	1789 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	1790 uint32_t linecyc = context->hslot;
137 0e7e1ccc0a81 Implemented HV counter Mike Pavone <pavone@retrodev.com> parents: 135 diff changeset	1791 linecyc &= 0xFF;
413 36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	1792 if (context->double_res) {
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	1793 line <<= 1;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	1794 if (line & 0x100) {
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	1795 line \|= 1;
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	1796 }
36fbbced25c2 Initial work on interlace Mike Pavone <pavone@retrodev.com> parents: 337 diff changeset	1797 }
137 0e7e1ccc0a81 Implemented HV counter Mike Pavone <pavone@retrodev.com> parents: 135 diff changeset	1798 return (line << 8) \| linecyc;
0e7e1ccc0a81 Implemented HV counter Mike Pavone <pavone@retrodev.com> parents: 135 diff changeset	1799 }
0e7e1ccc0a81 Implemented HV counter Mike Pavone <pavone@retrodev.com> parents: 135 diff changeset	1800
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	1801 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	1802 {
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	1803 //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	1804 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	1805 }
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	1806
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	1807 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	1808 {
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	1809 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	1810 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	1811 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	1812 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	1813 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	1814 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	1815 } 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	1816 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	1817 }
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	1818 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	1819 } 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	1820 }
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	1821 }
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	1822
623 66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1823 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	1824 {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1825 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	1826 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	1827 return (HBLANK_START_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	1828 } 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	1829 return MCLKS_LINE - (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	1830 } else {
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1831 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	1832 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1833 } else {
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1834 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	1835 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	1836 } 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	1837 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	1838 } else {
647 5d58dcd94733 Fix the HV counter and adjust the slots of certain VDP events Michael Pavone <pavone@retrodev.com> parents: 629 diff changeset	1839 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	1840 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1841 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1842 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1843
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1844 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	1845 {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1846 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	1847 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	1848 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	1849 jump_start = 0x10B;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1850 jump_dst = 0x1D2;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1851 } else {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1852 jump_start = 0x103;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1853 jump_dst = 0x1CA;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1854 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1855 } else {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1856 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	1857 jump_start = 0;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1858 jump_dst = 0;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1859 } else {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1860 jump_start = 0xEB;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1861 jump_dst = 0x1E5;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1862 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1863 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1864 uint32_t lines;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1865 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	1866 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	1867 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	1868 } else {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1869 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	1870 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1871 } else {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1872 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	1873 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	1874 } else {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1875 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	1876 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1877 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	1878 lines += target;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1879 } else {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1880 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	1881 }
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 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	1884 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1885
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1886 uint32_t vdp_cycles_to_frame_end(vdp_context * context)
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1887 {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1888 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	1889 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	1890 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	1891 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	1892 } else {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1893 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	1894 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1895 } else {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1896 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	1897 frame_end = 512;
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1898 } else {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1899 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	1900 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1901 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1902 return context->cycles + vdp_cycles_to_line(context, frame_end);
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1903 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1904
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	1905 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	1906 {
327 1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	1907 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	1908 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	1909 }
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	1910 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	1911 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	1912 }
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	1913 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	1914 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	1915 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	1916 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	1917 } else {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1918 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	1919 }
623 66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1920
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1921 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	1922 }
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	1923
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	1924 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	1925 {
327 1b00258b1f29 Added some basic VDP debugging features to debugger. Fixed DMA enable bug Mike Pavone <pavone@retrodev.com> parents: 323 diff changeset	1926 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	1927 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	1928 }
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	1929 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	1930 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	1931 }
623 66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1932
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1933
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1934 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	1935 }
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	1936
333 f16136a3835d Update Z80 vint timing Mike Pavone <pavone@retrodev.com> parents: 332 diff changeset	1937 uint32_t vdp_next_vint_z80(vdp_context * context)
f16136a3835d Update Z80 vint timing Mike Pavone <pavone@retrodev.com> parents: 332 diff changeset	1938 {
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	1939 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	1940 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	1941 if (context->regs[REG_MODE_4] & BIT_H40) {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1942 if (context->hslot >= HBLANK_START_H40) {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1943 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	1944 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	1945 } else {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1946 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	1947 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1948 } 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	1949 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	1950 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1951 } else {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1952 if (context->hslot >= HBLANK_START_H32) {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1953 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	1954 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	1955 } else {
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1956 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	1957 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1958 } 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	1959 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	1960 }
66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1961 }
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 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	1964 if (context->regs[REG_MODE_4] & BIT_H40) {
623 66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1965 cycles_to_vint += (VINT_SLOT_H40 + 183 - HBLANK_START_H40 + 256 - 229) * MCLKS_SLOT_H40;
333 f16136a3835d Update Z80 vint timing Mike Pavone <pavone@retrodev.com> parents: 332 diff changeset	1966 } else {
623 66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1967 cycles_to_vint += (VINT_SLOT_H32 + 148 - HBLANK_START_H32 + 256 - 233) * MCLKS_SLOT_H32;
333 f16136a3835d Update Z80 vint timing Mike Pavone <pavone@retrodev.com> parents: 332 diff changeset	1968 }
623 66cc60215e5c Fix most of the breakage caused by the vcounter/hcounter changes Michael Pavone <pavone@retrodev.com> parents: 622 diff changeset	1969 return context->cycles + cycles_to_vint;
333 f16136a3835d Update Z80 vint timing Mike Pavone <pavone@retrodev.com> parents: 332 diff changeset	1970 }
f16136a3835d Update Z80 vint timing Mike Pavone <pavone@retrodev.com> parents: 332 diff changeset	1971
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	1972 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	1973 {
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	1974 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	1975 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	1976 } 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	1977 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	1978 }
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	1979 }
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	1980

Mercurial > repos > blastem

annotate vdp.c @ 647:5d58dcd94733