repos/blastem: vdp.c annotate

annotate vdp.c @ 57:bc3bc7a60c4e

Code in runtime for checking for VDP reads was using the wrong register. This is now fixed.

author	Mike Pavone <pavone@retrodev.com>
date	Tue, 18 Dec 2012 22:19:52 -0800
parents	a28b1dfe1af2
children	a6a19c45d358

rev	line source
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	1 #include "vdp.h"
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	2 #include <stdlib.h>
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	3 #include <string.h>
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	4
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	5 #define NTSC_ACTIVE 225
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	6 #define PAL_ACTIVE 241
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	7 #define BUF_BIT_PRIORITY 0x40
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	8 #define MAP_BIT_PRIORITY 0x8000
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	9 #define MAP_BIT_H_FLIP 0x800
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	10 #define MAP_BIT_V_FLIP 0x1000
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	11
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	12 #define BIT_PAL 0x8
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	13 #define BIT_H40 0x1
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	14
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	15 #define SCROLL_BUFFER_SIZE 32
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	16 #define SCROLL_BUFFER_DRAW 16
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	17
40 7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	18 #define FLAG_DOT_OFLOW 0x1
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	19 #define FLAG_CAN_MASK 0x2
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	20 #define FLAG_MASKED 0x4
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	21 #define FLAG_WINDOW 0x8
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	22 #define FLAG_PENDING 0x10
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	23 #define FLAG_UNUSED_SLOT 0x20
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	24
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	25 #define FIFO_SIZE 4
40 7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	26
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	27 void init_vdp_context(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	28 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	29 memset(context, 0, sizeof(context));
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	30 context->vdpmem = malloc(VRAM_SIZE);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	31 context->framebuf = malloc(FRAMEBUF_SIZE);
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	32 memset(context->framebuf, 0, FRAMEBUF_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	33 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	34 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	35 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	36 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	37 context->sprite_draws = MAX_DRAWS;
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	38 context->fifo_cur = malloc(sizeof(fifo_entry) * FIFO_SIZE);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	39 context->fifo_end = context->fifo_cur + FIFO_SIZE;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	40 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	41
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	42 void render_sprite_cells(vdp_context * context)
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	43 {
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	44 if (context->cur_slot >= context->sprite_draws) {
72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	45 sprite_draw * d = context->sprite_draw_list + context->cur_slot;
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	46
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	47 uint16_t dir;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	48 int16_t x;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	49 if (d->h_flip) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	50 x = d->x_pos + 7;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	51 dir = -1;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	52 } else {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	53 x = d->x_pos;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	54 dir = 1;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	55 }
27 aa1c47fab3f1 Fix sprite transparency for overlapping sprites Mike Pavone <pavone@retrodev.com> parents: 26 diff changeset	56 //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	57 context->cur_slot--;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	58 for (uint16_t address = d->address; address < d->address+4; address++) {
27 aa1c47fab3f1 Fix sprite transparency for overlapping sprites Mike Pavone <pavone@retrodev.com> parents: 26 diff changeset	59 if (x >= 0 && x < 320 && !(context->linebuf[x] & 0xF)) {
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	60 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	61 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	62 x += dir;
27 aa1c47fab3f1 Fix sprite transparency for overlapping sprites Mike Pavone <pavone@retrodev.com> parents: 26 diff changeset	63 if (x >= 0 && x < 320 && !(context->linebuf[x] & 0xF)) {
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	64 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	65 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	66 x += dir;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	67 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	68 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	69 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	70
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	71 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	72 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	73 if (context->sprite_index && context->slot_counter) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	74 line += 1;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	75 line &= 0xFF;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	76 context->sprite_index &= 0x7F;
38 898e3d035f42 Implement sprite index >= sprite limit triggers sprite limit behavior Mike Pavone <pavone@retrodev.com> parents: 37 diff changeset	77 if (context->latched_mode & BIT_H40) {
898e3d035f42 Implement sprite index >= sprite limit triggers sprite limit behavior Mike Pavone <pavone@retrodev.com> parents: 37 diff changeset	78 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	79 context->sprite_index = 0;
898e3d035f42 Implement sprite index >= sprite limit triggers sprite limit behavior Mike Pavone <pavone@retrodev.com> parents: 37 diff changeset	80 return;
898e3d035f42 Implement sprite index >= sprite limit triggers sprite limit behavior Mike Pavone <pavone@retrodev.com> parents: 37 diff changeset	81 }
898e3d035f42 Implement sprite index >= sprite limit triggers sprite limit behavior Mike Pavone <pavone@retrodev.com> parents: 37 diff changeset	82 } 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	83 context->sprite_index = 0;
898e3d035f42 Implement sprite index >= sprite limit triggers sprite limit behavior Mike Pavone <pavone@retrodev.com> parents: 37 diff changeset	84 return;
898e3d035f42 Implement sprite index >= sprite limit triggers sprite limit behavior Mike Pavone <pavone@retrodev.com> parents: 37 diff changeset	85 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	86 //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	87 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	88 uint16_t address = context->sprite_index * 8 + sat_address;
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	89 int16_t y = ((context->vdpmem[address] & 0x3) << 8 \| context->vdpmem[address+1]) - 128;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	90 uint8_t height = ((context->vdpmem[address+2] & 0x3) + 1) * 8;
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	91 //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	92 if (y <= line && line < (y + height)) {
27 aa1c47fab3f1 Fix sprite transparency for overlapping sprites Mike Pavone <pavone@retrodev.com> parents: 26 diff changeset	93 //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	94 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	95 context->sprite_info_list[context->slot_counter].index = context->sprite_index;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	96 context->sprite_info_list[context->slot_counter].y = y;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	97 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	98 context->sprite_index = context->vdpmem[address+3] & 0x7F;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	99 if (context->sprite_index && context->slot_counter)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	100 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	101 address = context->sprite_index * 8 + sat_address;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	102 y = ((context->vdpmem[address] & 0x3) << 8 \| context->vdpmem[address+1]) - 128;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	103 height = ((context->vdpmem[address+2] & 0x3) + 1) * 8;
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	104 if (y <= line && line < (y + height)) {
27 aa1c47fab3f1 Fix sprite transparency for overlapping sprites Mike Pavone <pavone@retrodev.com> parents: 26 diff changeset	105 //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	106 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	107 context->sprite_info_list[context->slot_counter].index = context->sprite_index;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	108 context->sprite_info_list[context->slot_counter].y = y;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	109 }
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	110 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	111 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	112 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	113 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	114
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	115 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	116 {
34 0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	117 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	118 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	119 line += 1;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	120 line &= 0xFF;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	121 //in tiles
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	122 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	123 //in pixels
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	124 uint8_t height = ((context->sprite_info_list[context->cur_slot].size & 0x3) + 1) * 8;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	125 uint16_t att_addr = ((context->regs[REG_SAT] & 0x7F) << 9) + context->sprite_info_list[context->cur_slot].index * 8 + 4;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	126 uint16_t tileinfo = (context->vdpmem[att_addr] << 8) \| context->vdpmem[att_addr+1];
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	127 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	128 uint8_t row;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	129 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	130 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	131 } else {
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	132 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	133 }
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	134 uint16_t address = ((tileinfo & 0x7FF) << 5) + row * 4;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	135 int16_t x = ((context->vdpmem[att_addr+ 2] & 0x3) << 8) \| context->vdpmem[att_addr + 3];
36 04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	136 if (x) {
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	137 context->flags \|= FLAG_CAN_MASK;
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	138 } 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	139 context->flags \|= FLAG_MASKED;
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	140 }
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	141
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	142 context->flags &= ~FLAG_DOT_OFLOW;
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	143 int16_t i;
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	144 if (context->flags & FLAG_MASKED) {
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	145 for (i=0; i < width && context->sprite_draws; i++) {
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	146 --context->sprite_draws;
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	147 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	148 }
36 04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	149 } else {
34 0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	150 x -= 128;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	151 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	152 int16_t dir;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	153 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	154 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	155 dir = -8;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	156 } else {
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	157 dir = 8;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	158 }
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	159 //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	160 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	161 --context->sprite_draws;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	162 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	163 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	164 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	165 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	166 }
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	167 }
36 04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	168 if (i < width) {
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	169 context->flags \|= FLAG_DOT_OFLOW;
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	170 }
04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	171 context->cur_slot--;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	172 } else {
34 0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test Mike Pavone <pavone@retrodev.com> parents: 32 diff changeset	173 context->flags \|= FLAG_DOT_OFLOW;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	174 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	175 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	176 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	177
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	178 #define VRAM_READ 0
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	179 #define VRAM_WRITE 1
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	180 #define CRAM_READ 8
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	181 #define CRAM_WRITE 3
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	182 #define VSRAM_READ 4
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	183 #define VSRAM_WRITE 5
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	184
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	185 void external_slot(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	186 {
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	187 fifo_entry * start = (context->fifo_end - FIFO_SIZE);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	188 //TODO: Implement DMA
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	189 if (context->fifo_cur != start && start->cycle <= context->cycles) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	190 switch (context->cd & 0x7)
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	191 {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	192 case VRAM_WRITE:
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	193 if (start->partial) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	194 printf("VRAM Write: %X to %X\n", start->value, context->address ^ 1);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	195 context->vdpmem[context->address ^ 1] = start->value;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	196 } else {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	197 printf("VRAM Write: %X to %X\n", start->value >> 8, context->address);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	198 context->vdpmem[context->address] = start->value >> 8;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	199 start->partial = 1;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	200 //skip auto-increment and removal of entry from fifo
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	201 return;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	202 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	203 break;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	204 case CRAM_WRITE:
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	205 printf("CRAM Write: %X to %X\n", start->value, context->address);
56 a28b1dfe1af2 Fix CRAM and possibly VSRAM writes Mike Pavone <pavone@retrodev.com> parents: 54 diff changeset	206 context->cram[(context->address/2) & (CRAM_SIZE-1)] = start->value;
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	207 break;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	208 case VSRAM_WRITE:
56 a28b1dfe1af2 Fix CRAM and possibly VSRAM writes Mike Pavone <pavone@retrodev.com> parents: 54 diff changeset	209 if (((context->address/2) & 63) < VSRAM_SIZE) {
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	210 printf("VSRAM Write: %X to %X\n", start->value, context->address);
56 a28b1dfe1af2 Fix CRAM and possibly VSRAM writes Mike Pavone <pavone@retrodev.com> parents: 54 diff changeset	211 context->vsram[(context->address/2) & 63] = start->value;
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	212 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	213 break;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	214 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	215 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	216 fifo_entry * cur = start+1;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	217 if (cur < context->fifo_cur) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	218 memmove(start, cur, sizeof(fifo_entry) * (context->fifo_cur - cur));
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	219 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	220 context->fifo_cur -= 1;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	221 } else {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	222 context->flags \|= FLAG_UNUSED_SLOT;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	223 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	224 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	225
40 7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	226 #define WINDOW_RIGHT 0x80
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	227 #define WINDOW_DOWN 0x80
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	228
25 4d0c20ad815a Fix vertical scroll value for plane B Mike Pavone <pavone@retrodev.com> parents: 24 diff changeset	229 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	230 {
40 7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	231 if (!vsram_off) {
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	232 uint16_t left_col, right_col;
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	233 if (context->regs[REG_WINDOW_H] & WINDOW_RIGHT) {
41 e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	234 left_col = (context->regs[REG_WINDOW_H] & 0x1F) * 2;
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	235 right_col = 42;
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	236 } else {
40 7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	237 left_col = 0;
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	238 right_col = (context->regs[REG_WINDOW_H] & 0x1F) * 2;
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	239 if (right_col) {
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	240 right_col += 2;
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	241 }
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	242 }
41 e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	243 uint16_t top_line, bottom_line;
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	244 if (context->regs[REG_WINDOW_V] & WINDOW_DOWN) {
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	245 top_line = (context->regs[REG_WINDOW_V] & 0x1F) * 8;
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	246 bottom_line = 241;
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	247 } else {
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	248 top_line = 0;
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	249 bottom_line = (context->regs[REG_WINDOW_V] & 0x1F) * 8;
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	250 }
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	251 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	252 uint16_t address = context->regs[REG_WINDOW] << 10;
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	253 uint16_t line_offset, offset, mask;
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	254 if (context->latched_mode & BIT_H40) {
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	255 address &= 0xF000;
42 6653e67a6811 Fix bug in tile address masking. Remove some debug code from window plane. Mike Pavone <pavone@retrodev.com> parents: 41 diff changeset	256 line_offset = (((line) / 8) * 64 * 2) & 0xFFF;
41 e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	257 mask = 0x7F;
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	258
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	259 } else {
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	260 address &= 0xF800;
42 6653e67a6811 Fix bug in tile address masking. Remove some debug code from window plane. Mike Pavone <pavone@retrodev.com> parents: 41 diff changeset	261 line_offset = (((line) / 8) * 32 * 2) & 0xFFF;
41 e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	262 mask = 0x3F;
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	263 }
42 6653e67a6811 Fix bug in tile address masking. Remove some debug code from window plane. Mike Pavone <pavone@retrodev.com> parents: 41 diff changeset	264 offset = address + line_offset + (((column - 2) * 2) & mask);
41 e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	265 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	266 //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	267 offset = address + line_offset + (((column - 1) * 2) & mask);
41 e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	268 context->col_2 = (context->vdpmem[offset] << 8) \| context->vdpmem[offset+1];
42 6653e67a6811 Fix bug in tile address masking. Remove some debug code from window plane. Mike Pavone <pavone@retrodev.com> parents: 41 diff changeset	269 context->v_offset = (line) & 0x7;
41 e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	270 context->flags \|= FLAG_WINDOW;
e591004487bc More correct window support, maybe Mike Pavone <pavone@retrodev.com> parents: 40 diff changeset	271 return;
40 7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	272 }
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	273 context->flags &= ~FLAG_WINDOW;
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	274 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	275 uint16_t vscroll;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	276 switch(context->regs[REG_SCROLL] & 0x30)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	277 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	278 case 0:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	279 vscroll = 0xFF;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	280 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	281 case 0x10:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	282 vscroll = 0x1FF;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	283 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	284 case 0x20:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	285 //TODO: Verify this behavior
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	286 vscroll = 0;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	287 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	288 case 0x30:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	289 vscroll = 0x3FF;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	290 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	291 }
25 4d0c20ad815a Fix vertical scroll value for plane B Mike Pavone <pavone@retrodev.com> parents: 24 diff changeset	292 vscroll &= (context->vsram[(context->regs[REG_MODE_3] & 0x4 ? column : 0) + vsram_off] + line);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	293 context->v_offset = vscroll & 0x7;
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	294 //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);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	295 vscroll /= 8;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	296 uint16_t hscroll_mask;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	297 uint16_t v_mul;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	298 switch(context->regs[REG_SCROLL] & 0x3)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	299 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	300 case 0:
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	301 hscroll_mask = 0xF0;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	302 v_mul = 64;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	303 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	304 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	305 hscroll_mask = 0x3F;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	306 v_mul = 128;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	307 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	308 case 0x2:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	309 //TODO: Verify this behavior
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	310 hscroll_mask = 0;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	311 v_mul = 0;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	312 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	313 case 0x3:
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	314 hscroll_mask = 0x3F0;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	315 v_mul = 256;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	316 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	317 }
28 037963b4c92d Fix BG plane B render bug Mike Pavone <pavone@retrodev.com> parents: 27 diff changeset	318 uint16_t hscroll, offset;
037963b4c92d Fix BG plane B render bug Mike Pavone <pavone@retrodev.com> parents: 27 diff changeset	319 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	320 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	321 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	322 //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	323 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	324 if (i) {
037963b4c92d Fix BG plane B render bug Mike Pavone <pavone@retrodev.com> parents: 27 diff changeset	325 context->col_2 = col_val;
037963b4c92d Fix BG plane B render bug Mike Pavone <pavone@retrodev.com> parents: 27 diff changeset	326 } else {
037963b4c92d Fix BG plane B render bug Mike Pavone <pavone@retrodev.com> parents: 27 diff changeset	327 context->col_1 = col_val;
037963b4c92d Fix BG plane B render bug Mike Pavone <pavone@retrodev.com> parents: 27 diff changeset	328 }
037963b4c92d Fix BG plane B render bug Mike Pavone <pavone@retrodev.com> parents: 27 diff changeset	329 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	330 }
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 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	333 {
25 4d0c20ad815a Fix vertical scroll value for plane B Mike Pavone <pavone@retrodev.com> parents: 24 diff changeset	334 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	335 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	336
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	337 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	338 {
25 4d0c20ad815a Fix vertical scroll value for plane B Mike Pavone <pavone@retrodev.com> parents: 24 diff changeset	339 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	340 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	341
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	342 void render_map(uint16_t col, uint8_t * tmp_buf, vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	343 {
42 6653e67a6811 Fix bug in tile address masking. Remove some debug code from window plane. Mike Pavone <pavone@retrodev.com> parents: 41 diff changeset	344 uint16_t address = ((col & 0x7FF) << 5);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	345 if (col & MAP_BIT_V_FLIP) {
43 3fc57e1a2c56 Add debug render mode and fix vertical flip bit for bg tiles Mike Pavone <pavone@retrodev.com> parents: 42 diff changeset	346 address += 28 - 4 * context->v_offset;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	347 } else {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	348 address += 4 * context->v_offset;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	349 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	350 uint16_t pal_priority = (col >> 9) & 0x70;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	351 int32_t dir;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	352 if (col & MAP_BIT_H_FLIP) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	353 tmp_buf += 7;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	354 dir = -1;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	355 } else {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	356 dir = 1;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	357 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	358 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	359 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	360 *tmp_buf = pal_priority \| (context->vdpmem[address] >> 4);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	361 tmp_buf += dir;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	362 *tmp_buf = pal_priority \| (context->vdpmem[address] & 0xF);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	363 tmp_buf += dir;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	364 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	365 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	366
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	367 void render_map_1(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	368 {
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	369 render_map(context->col_1, context->tmp_buf_a+SCROLL_BUFFER_DRAW, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	370 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	371
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	372 void render_map_2(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	373 {
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	374 render_map(context->col_2, context->tmp_buf_a+SCROLL_BUFFER_DRAW+8, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	375 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	376
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	377 void render_map_3(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	378 {
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	379 render_map(context->col_1, context->tmp_buf_b+SCROLL_BUFFER_DRAW, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	380 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	381
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	382 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	383 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	384 if (line >= 240) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	385 return;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	386 }
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	387 render_map(context->col_2, context->tmp_buf_b+SCROLL_BUFFER_DRAW+8, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	388 uint16_t dst, end;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	389 uint8_t sprite_buf, plane_a, *plane_b;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	390 if (col)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	391 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	392 col-=2;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	393 dst = context->framebuf + line * 320 + col * 8;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	394 sprite_buf = context->linebuf + col * 8;
43 3fc57e1a2c56 Add debug render mode and fix vertical flip bit for bg tiles Mike Pavone <pavone@retrodev.com> parents: 42 diff changeset	395 uint16_t a_src;
40 7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	396 if (context->flags & FLAG_WINDOW) {
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	397 plane_a = context->tmp_buf_a + SCROLL_BUFFER_DRAW;
43 3fc57e1a2c56 Add debug render mode and fix vertical flip bit for bg tiles Mike Pavone <pavone@retrodev.com> parents: 42 diff changeset	398 a_src = FBUF_SRC_W;
40 7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	399 } else {
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	400 plane_a = context->tmp_buf_a + SCROLL_BUFFER_DRAW - (context->hscroll_a & 0xF);
43 3fc57e1a2c56 Add debug render mode and fix vertical flip bit for bg tiles Mike Pavone <pavone@retrodev.com> parents: 42 diff changeset	401 a_src = FBUF_SRC_A;
40 7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	402 }
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	403 plane_b = context->tmp_buf_b + SCROLL_BUFFER_DRAW - (context->hscroll_b & 0xF);
30 03f9bb57cc54 Small cleanup Mike Pavone <pavone@retrodev.com> parents: 29 diff changeset	404 end = dst + 16;
43 3fc57e1a2c56 Add debug render mode and fix vertical flip bit for bg tiles Mike Pavone <pavone@retrodev.com> parents: 42 diff changeset	405 uint16_t src;
30 03f9bb57cc54 Small cleanup Mike Pavone <pavone@retrodev.com> parents: 29 diff changeset	406 //printf("A \| tmp_buf offset: %d\n", 8 - (context->hscroll_a & 0x7));
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	407 for (; dst < end; ++plane_a, ++plane_b, ++sprite_buf, ++dst) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	408 uint8_t pixel;
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	409 if (sprite_buf & BUF_BIT_PRIORITY && sprite_buf & 0xF) {
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	410 pixel = *sprite_buf;
43 3fc57e1a2c56 Add debug render mode and fix vertical flip bit for bg tiles Mike Pavone <pavone@retrodev.com> parents: 42 diff changeset	411 src = FBUF_SRC_S;
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	412 } else if (plane_a & BUF_BIT_PRIORITY && plane_a & 0xF) {
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	413 pixel = *plane_a;
43 3fc57e1a2c56 Add debug render mode and fix vertical flip bit for bg tiles Mike Pavone <pavone@retrodev.com> parents: 42 diff changeset	414 src = a_src;
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	415 } else if (plane_b & BUF_BIT_PRIORITY && plane_b & 0xF) {
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	416 pixel = *plane_b;
43 3fc57e1a2c56 Add debug render mode and fix vertical flip bit for bg tiles Mike Pavone <pavone@retrodev.com> parents: 42 diff changeset	417 src = FBUF_SRC_B;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	418 } else if (*sprite_buf & 0xF) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	419 pixel = *sprite_buf;
43 3fc57e1a2c56 Add debug render mode and fix vertical flip bit for bg tiles Mike Pavone <pavone@retrodev.com> parents: 42 diff changeset	420 src = FBUF_SRC_S;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	421 } else if (*plane_a & 0xF) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	422 pixel = *plane_a;
43 3fc57e1a2c56 Add debug render mode and fix vertical flip bit for bg tiles Mike Pavone <pavone@retrodev.com> parents: 42 diff changeset	423 src = a_src;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	424 } else if (*plane_b & 0xF){
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	425 pixel = *plane_b;
43 3fc57e1a2c56 Add debug render mode and fix vertical flip bit for bg tiles Mike Pavone <pavone@retrodev.com> parents: 42 diff changeset	426 src = FBUF_SRC_B;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	427 } else {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	428 pixel = context->regs[REG_BG_COLOR] & 0x3F;
43 3fc57e1a2c56 Add debug render mode and fix vertical flip bit for bg tiles Mike Pavone <pavone@retrodev.com> parents: 42 diff changeset	429 src = FBUF_SRC_BG;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	430 }
43 3fc57e1a2c56 Add debug render mode and fix vertical flip bit for bg tiles Mike Pavone <pavone@retrodev.com> parents: 42 diff changeset	431 *dst = context->cram[pixel & 0x3F] \| ((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	432 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	433 } else {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	434 //dst = context->framebuf + line * 320;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	435 //sprite_buf = context->linebuf + col * 8;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	436 //plane_a = context->tmp_buf_a + 16 - (context->hscroll_a & 0x7);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	437 //plane_b = context->tmp_buf_b + 16 - (context->hscroll_b & 0x7);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	438 //end = dst + 8;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	439 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	440
40 7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	441 uint16_t remaining;
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	442 if (!(context->flags & FLAG_WINDOW)) {
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	443 remaining = context->hscroll_a & 0xF;
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	444 memcpy(context->tmp_buf_a + SCROLL_BUFFER_DRAW - remaining, context->tmp_buf_a + SCROLL_BUFFER_SIZE - remaining, remaining);
7368a7071908 Broken window support Mike Pavone <pavone@retrodev.com> parents: 39 diff changeset	445 }
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	446 remaining = context->hscroll_b & 0xF;
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	447 memcpy(context->tmp_buf_b + SCROLL_BUFFER_DRAW - remaining, context->tmp_buf_b + SCROLL_BUFFER_SIZE - remaining, remaining);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	448 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	449
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	450 #define COLUMN_RENDER_BLOCK(column, startcyc) \
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	451 case startcyc:\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	452 read_map_scroll_a(column, line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	453 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	454 case (startcyc+1):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	455 external_slot(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	456 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	457 case (startcyc+2):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	458 render_map_1(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	459 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	460 case (startcyc+3):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	461 render_map_2(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	462 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	463 case (startcyc+4):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	464 read_map_scroll_b(column, line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	465 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	466 case (startcyc+5):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	467 read_sprite_x(line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	468 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	469 case (startcyc+6):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	470 render_map_3(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	471 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	472 case (startcyc+7):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	473 render_map_output(line, column, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	474 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	475
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	476 #define COLUMN_RENDER_BLOCK_REFRESH(column, startcyc) \
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	477 case startcyc:\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	478 read_map_scroll_a(column, line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	479 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	480 case (startcyc+1):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	481 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	482 case (startcyc+2):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	483 render_map_1(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	484 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	485 case (startcyc+3):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	486 render_map_2(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	487 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	488 case (startcyc+4):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	489 read_map_scroll_b(column, line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	490 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	491 case (startcyc+5):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	492 read_sprite_x(line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	493 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	494 case (startcyc+6):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	495 render_map_3(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	496 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	497 case (startcyc+7):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	498 render_map_output(line, column, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	499 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	500
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	501 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	502 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	503 uint16_t address;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	504 uint32_t mask;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	505 switch(linecyc)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	506 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	507 //sprite render to line buffer starts
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	508 case 0:
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	509 context->cur_slot = MAX_DRAWS-1;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	510 memset(context->linebuf, 0, LINEBUF_SIZE);
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	511 render_sprite_cells(context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	512 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	513 case 1:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	514 case 2:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	515 case 3:
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	516 render_sprite_cells(context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	517 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	518 //sprite attribute table scan starts
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	519 case 4:
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	520 render_sprite_cells( context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	521 context->sprite_index = 0x80;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	522 context->slot_counter = MAX_SPRITES_LINE;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	523 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	524 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	525 case 5:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	526 case 6:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	527 case 7:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	528 case 8:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	529 case 9:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	530 case 10:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	531 case 11:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	532 case 12:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	533 case 13:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	534 case 14:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	535 case 15:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	536 case 16:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	537 case 17:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	538 case 18:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	539 case 19:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	540 case 20:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	541 //!HSYNC asserted
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	542 case 21:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	543 case 22:
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	544 render_sprite_cells(context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	545 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	546 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	547 case 23:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	548 external_slot(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	549 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	550 case 24:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	551 case 25:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	552 case 26:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	553 case 27:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	554 case 28:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	555 case 29:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	556 case 30:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	557 case 31:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	558 case 32:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	559 case 33:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	560 case 34:
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	561 render_sprite_cells(context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	562 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	563 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	564 case 35:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	565 address = (context->regs[REG_HSCROLL] & 0x3F) << 10;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	566 mask = 0;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	567 if (context->regs[REG_MODE_3] & 0x2) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	568 mask \|= 0xF8;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	569 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	570 if (context->regs[REG_MODE_3] & 0x1) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	571 mask \|= 0x7;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	572 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	573 line &= mask;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	574 address += line * 4;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	575 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	576 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	577 //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	578 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	579 case 36:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	580 //!HSYNC high
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	581 case 37:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	582 case 38:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	583 case 39:
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	584 render_sprite_cells(context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	585 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	586 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	587 case 40:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	588 read_map_scroll_a(0, line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	589 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	590 case 41:
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	591 render_sprite_cells(context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	592 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	593 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	594 case 42:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	595 render_map_1(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	596 scan_sprite_table(line, context);//Just a guess
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	597 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	598 case 43:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	599 render_map_2(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	600 scan_sprite_table(line, context);//Just a guess
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	601 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	602 case 44:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	603 read_map_scroll_b(0, line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	604 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	605 case 45:
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	606 render_sprite_cells(context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	607 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	608 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	609 case 46:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	610 render_map_3(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	611 scan_sprite_table(line, context);//Just a guess
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	612 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	613 case 47:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	614 render_map_output(line, 0, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	615 scan_sprite_table(line, context);//Just a guess
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	616 //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	617 //filled rather than the number of available slots
21 72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	618 //context->slot_counter = MAX_SPRITES_LINE - context->slot_counter;
72ce60cb1711 Sprites somewhat less broken Mike Pavone <pavone@retrodev.com> parents: 20 diff changeset	619 context->cur_slot = MAX_SPRITES_LINE-1;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	620 context->sprite_draws = MAX_DRAWS;
36 04672c060062 Pass all sprite masking tests Mike Pavone <pavone@retrodev.com> parents: 35 diff changeset	621 context->flags &= (~FLAG_CAN_MASK & ~FLAG_MASKED);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	622 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	623 COLUMN_RENDER_BLOCK(2, 48)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	624 COLUMN_RENDER_BLOCK(4, 56)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	625 COLUMN_RENDER_BLOCK(6, 64)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	626 COLUMN_RENDER_BLOCK_REFRESH(8, 72)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	627 COLUMN_RENDER_BLOCK(10, 80)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	628 COLUMN_RENDER_BLOCK(12, 88)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	629 COLUMN_RENDER_BLOCK(14, 96)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	630 COLUMN_RENDER_BLOCK_REFRESH(16, 104)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	631 COLUMN_RENDER_BLOCK(18, 112)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	632 COLUMN_RENDER_BLOCK(20, 120)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	633 COLUMN_RENDER_BLOCK(22, 128)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	634 COLUMN_RENDER_BLOCK_REFRESH(24, 136)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	635 COLUMN_RENDER_BLOCK(26, 144)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	636 COLUMN_RENDER_BLOCK(28, 152)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	637 COLUMN_RENDER_BLOCK(30, 160)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	638 COLUMN_RENDER_BLOCK_REFRESH(32, 168)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	639 COLUMN_RENDER_BLOCK(34, 176)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	640 COLUMN_RENDER_BLOCK(36, 184)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	641 COLUMN_RENDER_BLOCK(38, 192)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	642 COLUMN_RENDER_BLOCK_REFRESH(40, 200)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	643 case 208:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	644 case 209:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	645 external_slot(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	646 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	647 default:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	648 //leftovers from HSYNC clock change nonsense
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	649 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	650 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	651 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	652
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	653 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	654 {
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	655 uint16_t address;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	656 uint32_t mask;
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	657 switch(linecyc)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	658 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	659 //sprite render to line buffer starts
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	660 case 0:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	661 context->cur_slot = MAX_DRAWS_H32-1;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	662 memset(context->linebuf, 0, LINEBUF_SIZE);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	663 render_sprite_cells(context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	664 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	665 case 1:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	666 case 2:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	667 case 3:
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	668 render_sprite_cells(context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	669 break;
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	670 //sprite attribute table scan starts
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	671 case 4:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	672 render_sprite_cells( context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	673 context->sprite_index = 0x80;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	674 context->slot_counter = MAX_SPRITES_LINE_H32;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	675 scan_sprite_table(line, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	676 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	677 case 5:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	678 case 6:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	679 case 7:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	680 case 8:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	681 case 9:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	682 case 10:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	683 case 11:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	684 case 12:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	685 case 13:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	686 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	687 scan_sprite_table(line, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	688 case 14:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	689 external_slot(context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	690 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	691 case 15:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	692 case 16:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	693 case 17:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	694 case 18:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	695 case 19:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	696 //HSYNC start
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	697 case 20:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	698 case 21:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	699 case 22:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	700 case 23:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	701 case 24:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	702 case 25:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	703 case 26:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	704 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	705 scan_sprite_table(line, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	706 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	707 case 27:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	708 external_slot(context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	709 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	710 case 28:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	711 address = (context->regs[REG_HSCROLL] & 0x3F) << 10;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	712 mask = 0;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	713 if (context->regs[REG_MODE_3] & 0x2) {
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	714 mask \|= 0xF8;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	715 }
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	716 if (context->regs[REG_MODE_3] & 0x1) {
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	717 mask \|= 0x7;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	718 }
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	719 line &= mask;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	720 address += line * 4;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	721 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	722 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	723 //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	724 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	725 case 29:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	726 case 30:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	727 case 31:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	728 case 32:
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	729 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	730 scan_sprite_table(line, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	731 break;
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	732 //!HSYNC high
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	733 case 33:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	734 read_map_scroll_a(0, line, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	735 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	736 case 34:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	737 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	738 scan_sprite_table(line, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	739 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	740 case 35:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	741 render_map_1(context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	742 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	743 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	744 case 36:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	745 render_map_2(context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	746 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	747 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	748 case 37:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	749 read_map_scroll_b(0, line, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	750 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	751 case 38:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	752 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	753 scan_sprite_table(line, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	754 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	755 case 39:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	756 render_map_3(context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	757 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	758 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	759 case 40:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	760 render_map_output(line, 0, context);
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	761 scan_sprite_table(line, context);//Just a guess
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	762 //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	763 //filled rather than the number of available slots
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	764 //context->slot_counter = MAX_SPRITES_LINE - context->slot_counter;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	765 context->cur_slot = MAX_SPRITES_LINE_H32-1;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	766 context->sprite_draws = MAX_DRAWS_H32;
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	767 context->flags &= (~FLAG_CAN_MASK & ~FLAG_MASKED);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	768 break;
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	769 COLUMN_RENDER_BLOCK(2, 41)
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	770 COLUMN_RENDER_BLOCK(4, 49)
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	771 COLUMN_RENDER_BLOCK(6, 57)
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	772 COLUMN_RENDER_BLOCK_REFRESH(8, 65)
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	773 COLUMN_RENDER_BLOCK(10, 73)
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	774 COLUMN_RENDER_BLOCK(12, 81)
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	775 COLUMN_RENDER_BLOCK(14, 89)
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	776 COLUMN_RENDER_BLOCK_REFRESH(16, 97)
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	777 COLUMN_RENDER_BLOCK(18, 105)
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	778 COLUMN_RENDER_BLOCK(20, 113)
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	779 COLUMN_RENDER_BLOCK(22, 121)
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	780 COLUMN_RENDER_BLOCK_REFRESH(24, 129)
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	781 COLUMN_RENDER_BLOCK(26, 137)
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	782 COLUMN_RENDER_BLOCK(28, 145)
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	783 COLUMN_RENDER_BLOCK(30, 153)
cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	784 COLUMN_RENDER_BLOCK_REFRESH(32, 161)
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	785 case 169:
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	786 case 170:
37 cd59519b26d9 Initial H32 mode support Mike Pavone <pavone@retrodev.com> parents: 36 diff changeset	787 external_slot(context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	788 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	789 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	790 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	791 void latch_mode(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	792 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	793 context->latched_mode = (context->regs[REG_MODE_4] & 0x81) \| (context->regs[REG_MODE_2] & BIT_PAL);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	794 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	795
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	796 #define DISPLAY_ENABLE 0x40
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	797
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	798 int is_refresh(vdp_context * context)
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	799 {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	800 uint32_t linecyc = context->cycles % MCLKS_LINE;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	801 if (context->latched_mode & BIT_H40) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	802 linecyc = linecyc/16;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	803 return (linecyc == 73 \|\| linecyc == 105 \|\| linecyc == 137 \|\| linecyc == 169 \|\| linecyc == 201);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	804 } else {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	805 linecyc = linecyc/20;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	806 return (linecyc == 66 \|\| linecyc == 98 \|\| linecyc == 130 \|\| linecyc == 162);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	807 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	808 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	809
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	810 void check_render_bg(vdp_context * context, int32_t line)
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	811 {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	812 if (line > 0) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	813 line -= 1;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	814 uint16_t * start = NULL, *end = NULL;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	815 uint32_t linecyc = (context->cycles % MCLKS_LINE);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	816 if (context->latched_mode & BIT_H40) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	817 linecyc /= 16;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	818 if (linecyc >= 55 && linecyc <= 207 && !((linecyc-55) % 8)) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	819 uint32_t x = ((linecyc-55)&(~0xF))*2;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	820 start = context->framebuf + line * 320 + x;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	821 end = start + 16;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	822 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	823 } else {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	824 linecyc /= 20;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	825 if (linecyc >= 48 && linecyc <= 168 && !((linecyc-48) % 8)) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	826 uint32_t x = ((linecyc-48)&(~0xF))*2;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	827 start = context->framebuf + line * 256 + x;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	828 end = start + 16;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	829 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	830 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	831 while (start != end) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	832 *start = context->regs[REG_BG_COLOR] & 0x3F;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	833 ++start;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	834 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	835 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	836 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	837
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	838 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	839 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	840 while(context->cycles < target_cycles)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	841 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	842 uint32_t line = context->cycles / MCLKS_LINE;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	843 uint32_t active_lines = context->latched_mode & BIT_PAL ? PAL_ACTIVE : NTSC_ACTIVE;
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	844 if (!line) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	845 latch_mode(context);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	846 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	847 if (line < active_lines && context->regs[REG_MODE_2] & DISPLAY_ENABLE) {
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	848 //first sort-of active line is treated as 255 internally
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	849 //it's used for gathering sprite info for line
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	850 line = (line - 1) & 0xFF;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	851 uint32_t linecyc = context->cycles % MCLKS_LINE;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	852
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	853 //Convert to slot number
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	854 if (context->latched_mode & BIT_H40){
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	855 //TODO: Deal with nasty clock switching during HBLANK
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	856 linecyc = linecyc/16;
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	857 vdp_h40(line, linecyc, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	858 context->cycles += 16;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	859 } else {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	860 linecyc = linecyc/20;
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	861 vdp_h32(line, linecyc, context);
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	862 context->cycles += 20;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	863 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	864 } else {
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	865 if (!is_refresh(context)) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	866 external_slot(context);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	867 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	868 if (line < active_lines) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	869 check_render_bg(context, line);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	870 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	871 if (context->latched_mode & BIT_H40){
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	872 //TODO: Deal with nasty clock switching during HBLANK
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	873 context->cycles += 16;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	874 } else {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	875 context->cycles += 20;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	876 }
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	877 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	878 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	879 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	880
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	881 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	882 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	883 uint32_t target_cycles = ((context->latched_mode & BIT_PAL) ? PAL_ACTIVE : NTSC_ACTIVE) * MCLKS_LINE;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	884 vdp_run_context(context, target_cycles);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	885 return context->cycles;
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	886 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	887
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	888 void vdp_control_port_write(vdp_context * context, uint16_t value)
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	889 {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	890 printf("control port write: %X\n", value);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	891 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	892 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	893 context->cd = (context->cd & 0x3) \| ((value >> 2) & 0x3C);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	894 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	895 } else {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	896 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	897 //Register write
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	898 uint8_t reg = (value >> 8) & 0x1F;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	899 if (reg < VDP_REGS) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	900 printf("register %d set to %X\n", reg, value);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	901 context->regs[reg] = value;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	902 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	903 } else {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	904 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	905 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	906 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	907 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	908 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	909 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	910
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	911 void vdp_data_port_write(vdp_context * context, uint16_t value)
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	912 {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	913 printf("data port write: %X\n", value);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	914 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	915 if (context->fifo_cur == context->fifo_end) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	916 printf("FIFO full, waiting for space before next write at cycle %X\n", context->cycles);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	917 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	918 while (context->fifo_cur == context->fifo_end) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	919 vdp_run_context(context, context->cycles + ((context->latched_mode & BIT_H40) ? 16 : 20));
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	920 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	921 context->fifo_cur->cycle = context->cycles;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	922 context->fifo_cur->value = value;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	923 context->fifo_cur->partial = 0;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	924 context->fifo_cur++;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	925 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	926
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	927 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	928 {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	929 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	930 uint16_t value = 0x3400;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	931 if (context->fifo_cur == (context->fifo_end - FIFO_SIZE)) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	932 value \|= 0x200;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	933 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	934 if (context->fifo_cur == context->fifo_end) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	935 value \|= 0x100;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	936 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	937 //TODO: Lots of other bits in status port
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	938 return value;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	939 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	940
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	941 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	942 {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	943 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	944 if (!(context->cd & 1)) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	945 return 0;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	946 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	947 //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	948 context->flags &= ~FLAG_UNUSED_SLOT;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	949 while (!(context->flags & FLAG_UNUSED_SLOT)) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	950 vdp_run_context(context, context->cycles + ((context->latched_mode & BIT_H40) ? 16 : 20));
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	951 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	952 uint16_t value = 0;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	953 switch (context->cd & 0x7)
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	954 {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	955 case VRAM_READ:
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	956 value = context->vdpmem[context->address] << 8;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	957 context->flags &= ~FLAG_UNUSED_SLOT;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	958 while (!(context->flags & FLAG_UNUSED_SLOT)) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	959 vdp_run_context(context, context->cycles + ((context->latched_mode & BIT_H40) ? 16 : 20));
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	960 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	961 value \|= context->vdpmem[context->address ^ 1];
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	962 break;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	963 case CRAM_READ:
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	964 value = context->cram[(context->address/2) & (CRAM_SIZE-1)];
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	965 break;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	966 case VSRAM_READ:
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	967 if (((context->address / 2) & 63) < VSRAM_SIZE) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	968 value = context->vsram[context->address & 63];
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	969 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	970 break;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	971 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	972 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	973 return value;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	974 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	975
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	976 #define GST_VDP_REGS 0xFA
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	977 #define GST_VDP_MEM 0x12478
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	978
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	979 void vdp_load_savestate(vdp_context * context, FILE * state_file)
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	980 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	981 uint8_t tmp_buf[CRAM_SIZE*2];
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	982 fseek(state_file, GST_VDP_REGS, SEEK_SET);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	983 fread(context->regs, 1, VDP_REGS, state_file);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	984 latch_mode(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	985 fread(tmp_buf, 1, sizeof(tmp_buf), state_file);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	986 for (int i = 0; i < CRAM_SIZE; i++) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	987 context->cram[i] = (tmp_buf[i2+1] << 8) \| tmp_buf[i2];
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	988 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	989 fread(tmp_buf, 2, VSRAM_SIZE, state_file);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	990 for (int i = 0; i < VSRAM_SIZE; i++) {
23 3e924bb56560 Fix endianness of VSRAM when read from Genecyst save state Mike Pavone <pavone@retrodev.com> parents: 22 diff changeset	991 context->vsram[i] = (tmp_buf[i2+1] << 8) \| tmp_buf[i2];
20 f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	992 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	993 fseek(state_file, GST_VDP_MEM, SEEK_SET);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	994 fread(context->vdpmem, 1, VRAM_SIZE, state_file);
f664eeb55cb4 Mostly broken VDP core and savestate viewer Mike Pavone <pavone@retrodev.com> parents: diff changeset	995 }
54 3b79cbcf6846 Get Flavio's color bar demo kind of sort of working Mike Pavone <pavone@retrodev.com> parents: 43 diff changeset	996
56 a28b1dfe1af2 Fix CRAM and possibly VSRAM writes Mike Pavone <pavone@retrodev.com> parents: 54 diff changeset	997 void vdp_save_state(vdp_context * context, FILE * outfile)
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes Mike Pavone <pavone@retrodev.com> parents: 54 diff changeset	998 {
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes Mike Pavone <pavone@retrodev.com> parents: 54 diff changeset	999 uint8_t tmp_buf[CRAM_SIZE*2];
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes Mike Pavone <pavone@retrodev.com> parents: 54 diff changeset	1000 fseek(outfile, GST_VDP_REGS, SEEK_SET);
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes Mike Pavone <pavone@retrodev.com> parents: 54 diff changeset	1001 fwrite(context->regs, 1, VDP_REGS, outfile);
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes Mike Pavone <pavone@retrodev.com> parents: 54 diff changeset	1002 for (int i = 0; i < CRAM_SIZE; i++) {
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes Mike Pavone <pavone@retrodev.com> parents: 54 diff changeset	1003 tmp_buf[i*2] = context->cram[i];
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes Mike Pavone <pavone@retrodev.com> parents: 54 diff changeset	1004 tmp_buf[i*2+1] = context->cram[i] >> 8;
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes Mike Pavone <pavone@retrodev.com> parents: 54 diff changeset	1005 }
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes Mike Pavone <pavone@retrodev.com> parents: 54 diff changeset	1006 fwrite(tmp_buf, 1, sizeof(tmp_buf), outfile);
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes Mike Pavone <pavone@retrodev.com> parents: 54 diff changeset	1007 for (int i = 0; i < VSRAM_SIZE; i++) {
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes Mike Pavone <pavone@retrodev.com> parents: 54 diff changeset	1008 tmp_buf[i*2] = context->vsram[i];
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes Mike Pavone <pavone@retrodev.com> parents: 54 diff changeset	1009 tmp_buf[i*2+1] = context->vsram[i] >> 8;
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes Mike Pavone <pavone@retrodev.com> parents: 54 diff changeset	1010 }
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes Mike Pavone <pavone@retrodev.com> parents: 54 diff changeset	1011 fwrite(tmp_buf, 2, VSRAM_SIZE, outfile);
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes Mike Pavone <pavone@retrodev.com> parents: 54 diff changeset	1012 fseek(outfile, GST_VDP_MEM, SEEK_SET);
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes Mike Pavone <pavone@retrodev.com> parents: 54 diff changeset	1013 fwrite(context->vdpmem, 1, VRAM_SIZE, outfile);
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes Mike Pavone <pavone@retrodev.com> parents: 54 diff changeset	1014 }
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes Mike Pavone <pavone@retrodev.com> parents: 54 diff changeset	1015

Mercurial > repos > blastem

annotate vdp.c @ 57:bc3bc7a60c4e