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annotate vdp.c @ 141:576f55711d8d

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Fix DMA in progress flag in VDP status register
author Mike Pavone <pavone@retrodev.com>
date Mon, 31 Dec 2012 18:12:08 -0800
parents aa3e1bb338c9
children b42bcfa09cce
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #include "vdp.h"
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2 #include "blastem.h"
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3 #include <stdlib.h>
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4 #include <string.h>
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5
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6 #define NTSC_ACTIVE 225
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7 #define PAL_ACTIVE 241
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8 #define BUF_BIT_PRIORITY 0x40
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9 #define MAP_BIT_PRIORITY 0x8000
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10 #define MAP_BIT_H_FLIP 0x800
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11 #define MAP_BIT_V_FLIP 0x1000
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12
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13 #define BIT_PAL 0x8
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14 #define BIT_DMA_ENABLE 0x4
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15 #define BIT_H40 0x1
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17 #define SCROLL_BUFFER_SIZE 32
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18 #define SCROLL_BUFFER_DRAW 16
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20 #define FIFO_SIZE 4
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21
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22 void init_vdp_context(vdp_context * context)
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23 {
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24 memset(context, 0, sizeof(*context));
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25 context->vdpmem = malloc(VRAM_SIZE);
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26 memset(context->vdpmem, 0, VRAM_SIZE);
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27 context->framebuf = malloc(FRAMEBUF_SIZE);
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28 memset(context->framebuf, 0, FRAMEBUF_SIZE);
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29 context->linebuf = malloc(LINEBUF_SIZE + SCROLL_BUFFER_SIZE*2);
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30 memset(context->linebuf, 0, LINEBUF_SIZE + SCROLL_BUFFER_SIZE*2);
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31 context->tmp_buf_a = context->linebuf + LINEBUF_SIZE;
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32 context->tmp_buf_b = context->tmp_buf_a + SCROLL_BUFFER_SIZE;
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33 context->sprite_draws = MAX_DRAWS;
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34 context->fifo_cur = malloc(sizeof(fifo_entry) * FIFO_SIZE);
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35 context->fifo_end = context->fifo_cur + FIFO_SIZE;
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36 }
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38 void render_sprite_cells(vdp_context * context)
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39 {
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40 if (context->cur_slot >= context->sprite_draws) {
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41 sprite_draw * d = context->sprite_draw_list + context->cur_slot;
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42
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43 uint16_t dir;
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44 int16_t x;
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45 if (d->h_flip) {
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46 x = d->x_pos + 7;
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47 dir = -1;
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48 } else {
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49 x = d->x_pos;
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50 dir = 1;
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51 }
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52 //printf("Draw Slot %d of %d, Rendering sprite cell from %X to x: %d\n", context->cur_slot, context->sprite_draws, d->address, x);
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53 context->cur_slot--;
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54 for (uint16_t address = d->address; address < d->address+4; address++) {
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55 if (x >= 0 && x < 320 && !(context->linebuf[x] & 0xF)) {
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56 context->linebuf[x] = (context->vdpmem[address] >> 4) | d->pal_priority;
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57 }
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58 x += dir;
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59 if (x >= 0 && x < 320 && !(context->linebuf[x] & 0xF)) {
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60 context->linebuf[x] = (context->vdpmem[address] & 0xF) | d->pal_priority;
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61 }
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62 x += dir;
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63 }
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64 }
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65 }
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67 void scan_sprite_table(uint32_t line, vdp_context * context)
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68 {
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69 if (context->sprite_index && context->slot_counter) {
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70 line += 1;
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71 line &= 0xFF;
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72 context->sprite_index &= 0x7F;
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73 if (context->latched_mode & BIT_H40) {
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74 if (context->sprite_index >= MAX_SPRITES_FRAME) {
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75 context->sprite_index = 0;
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76 return;
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77 }
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78 } else if(context->sprite_index >= MAX_SPRITES_FRAME_H32) {
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79 context->sprite_index = 0;
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80 return;
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81 }
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82 //TODO: Read from SAT cache rather than from VRAM
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83 uint16_t sat_address = (context->regs[REG_SAT] & 0x7F) << 9;
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84 uint16_t address = context->sprite_index * 8 + sat_address;
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85 int16_t y = ((context->vdpmem[address] & 0x3) << 8 | context->vdpmem[address+1]) - 128;
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86 uint8_t height = ((context->vdpmem[address+2] & 0x3) + 1) * 8;
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87 //printf("Sprite %d | y: %d, height: %d\n", context->sprite_index, y, height);
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88 if (y <= line && line < (y + height)) {
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89 //printf("Sprite %d at y: %d with height %d is on line %d\n", context->sprite_index, y, height, line);
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90 context->sprite_info_list[--(context->slot_counter)].size = context->vdpmem[address+2];
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91 context->sprite_info_list[context->slot_counter].index = context->sprite_index;
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92 context->sprite_info_list[context->slot_counter].y = y;
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93 }
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94 context->sprite_index = context->vdpmem[address+3] & 0x7F;
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95 if (context->sprite_index && context->slot_counter)
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96 {
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97 address = context->sprite_index * 8 + sat_address;
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98 y = ((context->vdpmem[address] & 0x3) << 8 | context->vdpmem[address+1]) - 128;
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99 height = ((context->vdpmem[address+2] & 0x3) + 1) * 8;
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100 if (y <= line && line < (y + height)) {
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101 //printf("Sprite %d at y: %d with height %d is on line %d\n", context->sprite_index, y, height, line);
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102 context->sprite_info_list[--(context->slot_counter)].size = context->vdpmem[address+2];
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103 context->sprite_info_list[context->slot_counter].index = context->sprite_index;
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104 context->sprite_info_list[context->slot_counter].y = y;
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105 }
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106 context->sprite_index = context->vdpmem[address+3] & 0x7F;
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107 }
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108 }
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109 }
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111 void read_sprite_x(uint32_t line, vdp_context * context)
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112 {
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113 if (context->cur_slot >= context->slot_counter) {
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114 if (context->sprite_draws) {
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115 line += 1;
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116 line &= 0xFF;
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117 //in tiles
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118 uint8_t width = ((context->sprite_info_list[context->cur_slot].size >> 2) & 0x3) + 1;
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119 //in pixels
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120 uint8_t height = ((context->sprite_info_list[context->cur_slot].size & 0x3) + 1) * 8;
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121 uint16_t att_addr = ((context->regs[REG_SAT] & 0x7F) << 9) + context->sprite_info_list[context->cur_slot].index * 8 + 4;
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122 uint16_t tileinfo = (context->vdpmem[att_addr] << 8) | context->vdpmem[att_addr+1];
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123 uint8_t pal_priority = (tileinfo >> 9) & 0x70;
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124 uint8_t row;
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125 if (tileinfo & MAP_BIT_V_FLIP) {
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126 row = (context->sprite_info_list[context->cur_slot].y + height - 1) - line;
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parents: 32
diff changeset
127 } else {
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parents: 32
diff changeset
128 row = line-context->sprite_info_list[context->cur_slot].y;
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parents: 32
diff changeset
129 }
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diff changeset
130 uint16_t address = ((tileinfo & 0x7FF) << 5) + row * 4;
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parents: 32
diff changeset
131 int16_t x = ((context->vdpmem[att_addr+ 2] & 0x3) << 8) | context->vdpmem[att_addr + 3];
36
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parents: 35
diff changeset
132 if (x) {
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diff changeset
133 context->flags |= FLAG_CAN_MASK;
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parents: 35
diff changeset
134 } else if(context->flags & (FLAG_CAN_MASK | FLAG_DOT_OFLOW)) {
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parents: 35
diff changeset
135 context->flags |= FLAG_MASKED;
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parents: 35
diff changeset
136 }
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parents: 35
diff changeset
137
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parents: 35
diff changeset
138 context->flags &= ~FLAG_DOT_OFLOW;
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parents: 35
diff changeset
139 int16_t i;
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parents: 35
diff changeset
140 if (context->flags & FLAG_MASKED) {
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parents: 35
diff changeset
141 for (i=0; i < width && context->sprite_draws; i++) {
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parents: 35
diff changeset
142 --context->sprite_draws;
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parents: 35
diff changeset
143 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
144 }
36
04672c060062 Pass all sprite masking tests
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parents: 35
diff changeset
145 } else {
34
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
146 x -= 128;
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Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
147 int16_t base_x = x;
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parents: 32
diff changeset
148 int16_t dir;
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parents: 32
diff changeset
149 if (tileinfo & MAP_BIT_H_FLIP) {
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Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
150 x += (width-1) * 8;
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Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
151 dir = -8;
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Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
152 } else {
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Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
153 dir = 8;
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Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
154 }
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Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
155 //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
156 for (i=0; i < width && context->sprite_draws; i++, x += dir) {
34
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
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diff changeset
157 --context->sprite_draws;
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Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
158 context->sprite_draw_list[context->sprite_draws].address = address + i * height * 4;
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parents: 32
diff changeset
159 context->sprite_draw_list[context->sprite_draws].x_pos = x;
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Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
160 context->sprite_draw_list[context->sprite_draws].pal_priority = pal_priority;
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Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
161 context->sprite_draw_list[context->sprite_draws].h_flip = (tileinfo & MAP_BIT_H_FLIP) ? 1 : 0;
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parents: 32
diff changeset
162 }
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
163 }
36
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Mike Pavone <pavone@retrodev.com>
parents: 35
diff changeset
164 if (i < width) {
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parents: 35
diff changeset
165 context->flags |= FLAG_DOT_OFLOW;
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Mike Pavone <pavone@retrodev.com>
parents: 35
diff changeset
166 }
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Mike Pavone <pavone@retrodev.com>
parents: 35
diff changeset
167 context->cur_slot--;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
168 } else {
34
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
169 context->flags |= FLAG_DOT_OFLOW;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
170 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
171 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
172 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
173
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
174 #define VRAM_READ 0
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parents: 43
diff changeset
175 #define VRAM_WRITE 1
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
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parents: 43
diff changeset
176 #define CRAM_READ 8
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parents: 43
diff changeset
177 #define CRAM_WRITE 3
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parents: 43
diff changeset
178 #define VSRAM_READ 4
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
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parents: 43
diff changeset
179 #define VSRAM_WRITE 5
75
108e587165c0 Implement DMA (untested)
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parents: 65
diff changeset
180 #define DMA_START 0x20
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
181
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
182 void external_slot(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
183 {
75
108e587165c0 Implement DMA (untested)
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parents: 65
diff changeset
184 //TODO: Figure out what happens if CD bit 4 is not set in DMA copy mode
108e587165c0 Implement DMA (untested)
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parents: 65
diff changeset
185 //TODO: Figure out what happens when CD:0-3 is not set to a write mode in DMA operations
108e587165c0 Implement DMA (untested)
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parents: 65
diff changeset
186 //TODO: Figure out what happens if DMA gets disabled part way through a DMA fill or DMA copy
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
187 if((context->regs[REG_MODE_2] & BIT_DMA_ENABLE) && (context->flags & FLAG_DMA_RUN)) {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
188 uint16_t dma_len;
108e587165c0 Implement DMA (untested)
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parents: 65
diff changeset
189 switch(context->regs[REG_DMASRC_H] & 0xC0)
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
190 {
75
108e587165c0 Implement DMA (untested)
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parents: 65
diff changeset
191 //68K -> VDP
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
192 case 0:
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
193 case 0x40:
131
8fc8e46be691 Fix bug that was causing DMA fills to lock up under certain circumstances
Mike Pavone <pavone@retrodev.com>
parents: 109
diff changeset
194 switch(context->dma_cd & 0xF)
75
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
195 {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
196 case VRAM_WRITE:
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
197 if (context->flags & FLAG_DMA_PROG) {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
198 context->vdpmem[context->address ^ 1] = context->dma_val;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
199 context->flags &= ~FLAG_DMA_PROG;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
200 } else {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
201 context->dma_val = read_dma_value((context->regs[REG_DMASRC_H] << 16) | (context->regs[REG_DMASRC_M] << 8) | context->regs[REG_DMASRC_L]);
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
202 context->vdpmem[context->address] = context->dma_val >> 8;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
203 context->flags |= FLAG_DMA_PROG;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
204 }
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
205 break;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
206 case CRAM_WRITE:
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
207 context->cram[(context->address/2) & (CRAM_SIZE-1)] = read_dma_value((context->regs[REG_DMASRC_H] << 16) | (context->regs[REG_DMASRC_M] << 8) | context->regs[REG_DMASRC_L]);
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
208 break;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
209 case VSRAM_WRITE:
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
210 if (((context->address/2) & 63) < VSRAM_SIZE) {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
211 context->vsram[(context->address/2) & 63] = read_dma_value((context->regs[REG_DMASRC_H] << 16) | (context->regs[REG_DMASRC_M] << 8) | context->regs[REG_DMASRC_L]);
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
212 }
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
213 break;
54
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 break;
75
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
216 //Fill
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
217 case 0x80:
131
8fc8e46be691 Fix bug that was causing DMA fills to lock up under certain circumstances
Mike Pavone <pavone@retrodev.com>
parents: 109
diff changeset
218 switch(context->dma_cd & 0xF)
75
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
219 {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
220 case VRAM_WRITE:
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
221 //Charles MacDonald's VDP doc says that the low byte gets written first
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
222 //this doesn't make a lot of sense to me, but until I've had a change to
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
223 //verify it myself, I'll assume it's true
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
224 if (context->flags & FLAG_DMA_PROG) {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
225 context->vdpmem[context->address ^ 1] = context->dma_val >> 8;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
226 context->flags &= ~FLAG_DMA_PROG;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
227 } else {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
228 context->vdpmem[context->address] = context->dma_val;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
229 context->flags |= FLAG_DMA_PROG;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
230 }
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
231 break;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
232 case CRAM_WRITE:
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
233 context->cram[(context->address/2) & (CRAM_SIZE-1)] = context->dma_val;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
234 break;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
235 case VSRAM_WRITE:
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
236 if (((context->address/2) & 63) < VSRAM_SIZE) {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
237 context->vsram[(context->address/2) & 63] = context->dma_val;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
238 }
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
239 break;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
240 }
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
241 break;
75
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
242 //Copy
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
243 case 0xC0:
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
244 if (context->flags & FLAG_DMA_PROG) {
131
8fc8e46be691 Fix bug that was causing DMA fills to lock up under certain circumstances
Mike Pavone <pavone@retrodev.com>
parents: 109
diff changeset
245 switch(context->dma_cd & 0xF)
75
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
246 {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
247 case VRAM_WRITE:
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
248 context->vdpmem[context->address] = context->dma_val;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
249 break;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
250 case CRAM_WRITE:
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
251 context->cram[(context->address/2) & (CRAM_SIZE-1)] = context->dma_val;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
252 break;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
253 case VSRAM_WRITE:
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
254 if (((context->address/2) & 63) < VSRAM_SIZE) {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
255 context->vsram[(context->address/2) & 63] = context->dma_val;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
256 }
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
257 break;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
258 }
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
259 context->flags &= ~FLAG_DMA_PROG;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
260 } else {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
261 //I assume, that DMA copy copies from the same RAM as the destination
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
262 //but it's possible I'm mistaken
131
8fc8e46be691 Fix bug that was causing DMA fills to lock up under certain circumstances
Mike Pavone <pavone@retrodev.com>
parents: 109
diff changeset
263 switch(context->dma_cd & 0xF)
75
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
264 {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
265 case VRAM_WRITE:
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
266 context->dma_val = context->vdpmem[(context->regs[REG_DMASRC_M] << 8) | context->regs[REG_DMASRC_L]];
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
267 break;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
268 case CRAM_WRITE:
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
269 context->dma_val = context->cram[context->regs[REG_DMASRC_L] & (CRAM_SIZE-1)];
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
270 break;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
271 case VSRAM_WRITE:
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
272 if ((context->regs[REG_DMASRC_L] & 63) < VSRAM_SIZE) {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
273 context->dma_val = context->vsram[context->regs[REG_DMASRC_L] & 63];
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
274 } else {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
275 context->dma_val = 0;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
276 }
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
277 break;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
278 }
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
279 context->flags |= FLAG_DMA_PROG;
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
280 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
281 break;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
282 }
75
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
283 if (!(context->flags & FLAG_DMA_PROG)) {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
284 context->address += context->regs[REG_AUTOINC];
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
285 context->regs[REG_DMASRC_L] += 1;
135
a81c548cf353 Fix 68K->VDP DMA
Mike Pavone <pavone@retrodev.com>
parents: 131
diff changeset
286 if (!context->regs[REG_DMASRC_L]) {
a81c548cf353 Fix 68K->VDP DMA
Mike Pavone <pavone@retrodev.com>
parents: 131
diff changeset
287 context->regs[REG_DMASRC_M] += 1;
a81c548cf353 Fix 68K->VDP DMA
Mike Pavone <pavone@retrodev.com>
parents: 131
diff changeset
288 }
75
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
289 dma_len = ((context->regs[REG_DMALEN_H] << 8) | context->regs[REG_DMALEN_L]) - 1;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
290 context->regs[REG_DMALEN_H] = dma_len >> 8;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
291 context->regs[REG_DMALEN_L] = dma_len;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
292 if (!dma_len) {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
293 context->flags &= ~FLAG_DMA_RUN;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
294 }
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
295 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
296 } else {
75
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
297 fifo_entry * start = (context->fifo_end - FIFO_SIZE);
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
298 if (context->fifo_cur != start && start->cycle <= context->cycles) {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
299 if ((context->regs[REG_MODE_2] & BIT_DMA_ENABLE) && (context->cd & DMA_START)) {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
300 context->flags |= FLAG_DMA_RUN;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
301 context->dma_val = start->value;
138
aa3e1bb338c9 Fix VDP reads
Mike Pavone <pavone@retrodev.com>
parents: 137
diff changeset
302 context->address = start->address; //undo auto-increment
131
8fc8e46be691 Fix bug that was causing DMA fills to lock up under certain circumstances
Mike Pavone <pavone@retrodev.com>
parents: 109
diff changeset
303 context->dma_cd = context->cd;
75
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
304 } else {
138
aa3e1bb338c9 Fix VDP reads
Mike Pavone <pavone@retrodev.com>
parents: 137
diff changeset
305 switch (start->cd & 0xF)
75
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
306 {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
307 case VRAM_WRITE:
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
308 if (start->partial) {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
309 //printf("VRAM Write: %X to %X\n", start->value, context->address ^ 1);
138
aa3e1bb338c9 Fix VDP reads
Mike Pavone <pavone@retrodev.com>
parents: 137
diff changeset
310 context->vdpmem[start->address ^ 1] = start->value;
75
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
311 } else {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
312 //printf("VRAM Write High: %X to %X\n", start->value >> 8, context->address);
138
aa3e1bb338c9 Fix VDP reads
Mike Pavone <pavone@retrodev.com>
parents: 137
diff changeset
313 context->vdpmem[start->address] = start->value >> 8;
75
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
314 start->partial = 1;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
315 //skip auto-increment and removal of entry from fifo
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
316 return;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
317 }
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
318 break;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
319 case CRAM_WRITE:
87
60b5c9e2f4e0 vertical interrupts now work
Mike Pavone <pavone@retrodev.com>
parents: 84
diff changeset
320 //printf("CRAM Write: %X to %X\n", start->value, context->address);
138
aa3e1bb338c9 Fix VDP reads
Mike Pavone <pavone@retrodev.com>
parents: 137
diff changeset
321 context->cram[(start->address/2) & (CRAM_SIZE-1)] = start->value;
75
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
322 break;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
323 case VSRAM_WRITE:
138
aa3e1bb338c9 Fix VDP reads
Mike Pavone <pavone@retrodev.com>
parents: 137
diff changeset
324 if (((start->address/2) & 63) < VSRAM_SIZE) {
75
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
325 //printf("VSRAM Write: %X to %X\n", start->value, context->address);
138
aa3e1bb338c9 Fix VDP reads
Mike Pavone <pavone@retrodev.com>
parents: 137
diff changeset
326 context->vsram[(start->address/2) & 63] = start->value;
75
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
327 }
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
328 break;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
329 }
138
aa3e1bb338c9 Fix VDP reads
Mike Pavone <pavone@retrodev.com>
parents: 137
diff changeset
330 //context->address += context->regs[REG_AUTOINC];
75
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
331 }
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
332 fifo_entry * cur = start+1;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
333 if (cur < context->fifo_cur) {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
334 memmove(start, cur, sizeof(fifo_entry) * (context->fifo_cur - cur));
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
335 }
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
336 context->fifo_cur -= 1;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
337 } else {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
338 context->flags |= FLAG_UNUSED_SLOT;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
339 }
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
340 }
20
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
40
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
343 #define WINDOW_RIGHT 0x80
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
344 #define WINDOW_DOWN 0x80
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
345
25
4d0c20ad815a Fix vertical scroll value for plane B
Mike Pavone <pavone@retrodev.com>
parents: 24
diff changeset
346 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
347 {
40
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
348 if (!vsram_off) {
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
349 uint16_t left_col, right_col;
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
350 if (context->regs[REG_WINDOW_H] & WINDOW_RIGHT) {
41
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
351 left_col = (context->regs[REG_WINDOW_H] & 0x1F) * 2;
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
352 right_col = 42;
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
353 } else {
40
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
354 left_col = 0;
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
355 right_col = (context->regs[REG_WINDOW_H] & 0x1F) * 2;
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
356 if (right_col) {
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
357 right_col += 2;
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
358 }
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
359 }
41
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
360 uint16_t top_line, bottom_line;
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
361 if (context->regs[REG_WINDOW_V] & WINDOW_DOWN) {
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
362 top_line = (context->regs[REG_WINDOW_V] & 0x1F) * 8;
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
363 bottom_line = 241;
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
364 } else {
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
365 top_line = 0;
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
366 bottom_line = (context->regs[REG_WINDOW_V] & 0x1F) * 8;
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
367 }
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
368 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
369 uint16_t address = context->regs[REG_WINDOW] << 10;
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
370 uint16_t line_offset, offset, mask;
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
371 if (context->latched_mode & BIT_H40) {
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
372 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
373 line_offset = (((line) / 8) * 64 * 2) & 0xFFF;
41
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
374 mask = 0x7F;
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
375
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
376 } else {
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
377 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
378 line_offset = (((line) / 8) * 32 * 2) & 0xFFF;
41
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
379 mask = 0x3F;
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
380 }
42
6653e67a6811 Fix bug in tile address masking. Remove some debug code from window plane.
Mike Pavone <pavone@retrodev.com>
parents: 41
diff changeset
381 offset = address + line_offset + (((column - 2) * 2) & mask);
41
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
382 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
383 //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
384 offset = address + line_offset + (((column - 1) * 2) & mask);
41
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
385 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
386 context->v_offset = (line) & 0x7;
41
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
387 context->flags |= FLAG_WINDOW;
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
388 return;
40
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
389 }
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
390 context->flags &= ~FLAG_WINDOW;
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
391 }
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
392 uint16_t vscroll;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
393 switch(context->regs[REG_SCROLL] & 0x30)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
394 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
395 case 0:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
396 vscroll = 0xFF;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
397 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
398 case 0x10:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
399 vscroll = 0x1FF;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
400 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
401 case 0x20:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
402 //TODO: Verify this behavior
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
403 vscroll = 0;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
404 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
405 case 0x30:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
406 vscroll = 0x3FF;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
407 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
408 }
25
4d0c20ad815a Fix vertical scroll value for plane B
Mike Pavone <pavone@retrodev.com>
parents: 24
diff changeset
409 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
410 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
411 //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
412 vscroll /= 8;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
413 uint16_t hscroll_mask;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
414 uint16_t v_mul;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
415 switch(context->regs[REG_SCROLL] & 0x3)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
416 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
417 case 0:
108
1a551a85cb06 Fix horizontal mask values for scroll plane map address calculation
Mike Pavone <pavone@retrodev.com>
parents: 87
diff changeset
418 hscroll_mask = 0x1F;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
419 v_mul = 64;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
420 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
421 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
422 hscroll_mask = 0x3F;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
423 v_mul = 128;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
424 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
425 case 0x2:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
426 //TODO: Verify this behavior
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
427 hscroll_mask = 0;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
428 v_mul = 0;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
429 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
430 case 0x3:
108
1a551a85cb06 Fix horizontal mask values for scroll plane map address calculation
Mike Pavone <pavone@retrodev.com>
parents: 87
diff changeset
431 hscroll_mask = 0x7F;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
432 v_mul = 256;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
433 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
434 }
28
037963b4c92d Fix BG plane B render bug
Mike Pavone <pavone@retrodev.com>
parents: 27
diff changeset
435 uint16_t hscroll, offset;
037963b4c92d Fix BG plane B render bug
Mike Pavone <pavone@retrodev.com>
parents: 27
diff changeset
436 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
437 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
438 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
439 //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
440 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
441 if (i) {
037963b4c92d Fix BG plane B render bug
Mike Pavone <pavone@retrodev.com>
parents: 27
diff changeset
442 context->col_2 = col_val;
037963b4c92d Fix BG plane B render bug
Mike Pavone <pavone@retrodev.com>
parents: 27
diff changeset
443 } else {
037963b4c92d Fix BG plane B render bug
Mike Pavone <pavone@retrodev.com>
parents: 27
diff changeset
444 context->col_1 = col_val;
037963b4c92d Fix BG plane B render bug
Mike Pavone <pavone@retrodev.com>
parents: 27
diff changeset
445 }
037963b4c92d Fix BG plane B render bug
Mike Pavone <pavone@retrodev.com>
parents: 27
diff changeset
446 }
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
447 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
448
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
449 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
450 {
25
4d0c20ad815a Fix vertical scroll value for plane B
Mike Pavone <pavone@retrodev.com>
parents: 24
diff changeset
451 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
452 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
453
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
454 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
455 {
25
4d0c20ad815a Fix vertical scroll value for plane B
Mike Pavone <pavone@retrodev.com>
parents: 24
diff changeset
456 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
457 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
458
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
459 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
460 {
42
6653e67a6811 Fix bug in tile address masking. Remove some debug code from window plane.
Mike Pavone <pavone@retrodev.com>
parents: 41
diff changeset
461 uint16_t address = ((col & 0x7FF) << 5);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
462 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
463 address += 28 - 4 * context->v_offset;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
464 } else {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
465 address += 4 * context->v_offset;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
466 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
467 uint16_t pal_priority = (col >> 9) & 0x70;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
468 int32_t dir;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
469 if (col & MAP_BIT_H_FLIP) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
470 tmp_buf += 7;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
471 dir = -1;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
472 } else {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
473 dir = 1;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
474 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
475 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
476 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
477 *tmp_buf = pal_priority | (context->vdpmem[address] >> 4);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
478 tmp_buf += dir;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
479 *tmp_buf = pal_priority | (context->vdpmem[address] & 0xF);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
480 tmp_buf += dir;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
481 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
482 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
483
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
484 void render_map_1(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
485 {
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
486 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
487 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
488
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
489 void render_map_2(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
490 {
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
491 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
492 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
493
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
494 void render_map_3(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
495 {
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
496 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
497 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
498
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
499 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
500 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
501 if (line >= 240) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
502 return;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
503 }
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
504 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
505 uint16_t *dst, *end;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
506 uint8_t *sprite_buf, *plane_a, *plane_b;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
507 if (col)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
508 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
509 col-=2;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
510 dst = context->framebuf + line * 320 + col * 8;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
511 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
512 uint16_t a_src;
40
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
513 if (context->flags & FLAG_WINDOW) {
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
514 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
515 a_src = FBUF_SRC_W;
40
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
516 } else {
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
517 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
518 a_src = FBUF_SRC_A;
40
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
519 }
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
520 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
521 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
522 uint16_t src;
30
03f9bb57cc54 Small cleanup
Mike Pavone <pavone@retrodev.com>
parents: 29
diff changeset
523 //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
524 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
525 uint8_t pixel;
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
526 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
527 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
528 src = FBUF_SRC_S;
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
529 } 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
530 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
531 src = a_src;
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
532 } 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
533 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
534 src = FBUF_SRC_B;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
535 } else if (*sprite_buf & 0xF) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
536 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
537 src = FBUF_SRC_S;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
538 } else if (*plane_a & 0xF) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
539 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
540 src = a_src;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
541 } else if (*plane_b & 0xF){
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
542 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
543 src = FBUF_SRC_B;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
544 } else {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
545 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
546 src = FBUF_SRC_BG;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
547 }
43
3fc57e1a2c56 Add debug render mode and fix vertical flip bit for bg tiles
Mike Pavone <pavone@retrodev.com>
parents: 42
diff changeset
548 *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
549 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
550 } else {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
551 //dst = context->framebuf + line * 320;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
552 //sprite_buf = context->linebuf + col * 8;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
553 //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
554 //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
555 //end = dst + 8;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
556 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
557
40
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
558 uint16_t remaining;
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
559 if (!(context->flags & FLAG_WINDOW)) {
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
560 remaining = context->hscroll_a & 0xF;
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
561 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
562 }
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
563 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
564 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
565 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
566
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
567 #define COLUMN_RENDER_BLOCK(column, startcyc) \
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
568 case startcyc:\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
569 read_map_scroll_a(column, line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
570 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
571 case (startcyc+1):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
572 external_slot(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
573 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
574 case (startcyc+2):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
575 render_map_1(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
576 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
577 case (startcyc+3):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
578 render_map_2(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
579 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
580 case (startcyc+4):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
581 read_map_scroll_b(column, line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
582 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
583 case (startcyc+5):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
584 read_sprite_x(line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
585 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
586 case (startcyc+6):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
587 render_map_3(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
588 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
589 case (startcyc+7):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
590 render_map_output(line, column, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
591 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
592
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
593 #define COLUMN_RENDER_BLOCK_REFRESH(column, startcyc) \
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
594 case startcyc:\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
595 read_map_scroll_a(column, line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
596 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
597 case (startcyc+1):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
598 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
599 case (startcyc+2):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
600 render_map_1(context);\
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 (startcyc+3):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
603 render_map_2(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 (startcyc+4):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
606 read_map_scroll_b(column, line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
607 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
608 case (startcyc+5):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
609 read_sprite_x(line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
610 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
611 case (startcyc+6):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
612 render_map_3(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
613 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
614 case (startcyc+7):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
615 render_map_output(line, column, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
616 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
617
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
618 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
619 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
620 uint16_t address;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
621 uint32_t mask;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
622 switch(linecyc)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
623 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
624 //sprite render to line buffer starts
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
625 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
626 context->cur_slot = MAX_DRAWS-1;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
627 memset(context->linebuf, 0, LINEBUF_SIZE);
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
628 render_sprite_cells(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
629 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
630 case 1:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
631 case 2:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
632 case 3:
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
633 render_sprite_cells(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
634 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
635 //sprite attribute table scan starts
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
636 case 4:
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
637 render_sprite_cells( context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
638 context->sprite_index = 0x80;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
639 context->slot_counter = MAX_SPRITES_LINE;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
640 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
641 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
642 case 5:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
643 case 6:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
644 case 7:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
645 case 8:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
646 case 9:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
647 case 10:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
648 case 11:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
649 case 12:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
650 case 13:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
651 case 14:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
652 case 15:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
653 case 16:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
654 case 17:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
655 case 18:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
656 case 19:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
657 case 20:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
658 //!HSYNC asserted
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
659 case 21:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
660 case 22:
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
661 render_sprite_cells(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
662 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
663 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
664 case 23:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
665 external_slot(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
666 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
667 case 24:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
668 case 25:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
669 case 26:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
670 case 27:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
671 case 28:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
672 case 29:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
673 case 30:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
674 case 31:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
675 case 32:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
676 case 33:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
677 case 34:
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
678 render_sprite_cells(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
679 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
680 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
681 case 35:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
682 address = (context->regs[REG_HSCROLL] & 0x3F) << 10;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
683 mask = 0;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
684 if (context->regs[REG_MODE_3] & 0x2) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
685 mask |= 0xF8;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
686 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
687 if (context->regs[REG_MODE_3] & 0x1) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
688 mask |= 0x7;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
689 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
690 line &= mask;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
691 address += line * 4;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
692 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
693 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
694 //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
695 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
696 case 36:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
697 //!HSYNC high
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
698 case 37:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
699 case 38:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
700 case 39:
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
701 render_sprite_cells(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
702 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
703 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
704 case 40:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
705 read_map_scroll_a(0, line, context);
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 41:
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
708 render_sprite_cells(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
709 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
710 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
711 case 42:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
712 render_map_1(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
713 scan_sprite_table(line, context);//Just a guess
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
714 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
715 case 43:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
716 render_map_2(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
717 scan_sprite_table(line, context);//Just a guess
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
718 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
719 case 44:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
720 read_map_scroll_b(0, line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
721 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
722 case 45:
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
723 render_sprite_cells(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
724 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
725 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
726 case 46:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
727 render_map_3(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
728 scan_sprite_table(line, context);//Just a guess
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
729 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
730 case 47:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
731 render_map_output(line, 0, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
732 scan_sprite_table(line, context);//Just a guess
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
733 //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
734 //filled rather than the number of available slots
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
735 //context->slot_counter = MAX_SPRITES_LINE - context->slot_counter;
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
736 context->cur_slot = MAX_SPRITES_LINE-1;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
737 context->sprite_draws = MAX_DRAWS;
36
04672c060062 Pass all sprite masking tests
Mike Pavone <pavone@retrodev.com>
parents: 35
diff changeset
738 context->flags &= (~FLAG_CAN_MASK & ~FLAG_MASKED);
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 COLUMN_RENDER_BLOCK(2, 48)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
741 COLUMN_RENDER_BLOCK(4, 56)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
742 COLUMN_RENDER_BLOCK(6, 64)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
743 COLUMN_RENDER_BLOCK_REFRESH(8, 72)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
744 COLUMN_RENDER_BLOCK(10, 80)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
745 COLUMN_RENDER_BLOCK(12, 88)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
746 COLUMN_RENDER_BLOCK(14, 96)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
747 COLUMN_RENDER_BLOCK_REFRESH(16, 104)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
748 COLUMN_RENDER_BLOCK(18, 112)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
749 COLUMN_RENDER_BLOCK(20, 120)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
750 COLUMN_RENDER_BLOCK(22, 128)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
751 COLUMN_RENDER_BLOCK_REFRESH(24, 136)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
752 COLUMN_RENDER_BLOCK(26, 144)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
753 COLUMN_RENDER_BLOCK(28, 152)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
754 COLUMN_RENDER_BLOCK(30, 160)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
755 COLUMN_RENDER_BLOCK_REFRESH(32, 168)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
756 COLUMN_RENDER_BLOCK(34, 176)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
757 COLUMN_RENDER_BLOCK(36, 184)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
758 COLUMN_RENDER_BLOCK(38, 192)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
759 COLUMN_RENDER_BLOCK_REFRESH(40, 200)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
760 case 208:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
761 case 209:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
762 external_slot(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
763 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
764 default:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
765 //leftovers from HSYNC clock change nonsense
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
766 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
767 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
768 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
769
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
770 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
771 {
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
772 uint16_t address;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
773 uint32_t mask;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
774 switch(linecyc)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
775 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
776 //sprite render to line buffer starts
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
777 case 0:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
778 context->cur_slot = MAX_DRAWS_H32-1;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
779 memset(context->linebuf, 0, LINEBUF_SIZE);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
780 render_sprite_cells(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
781 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
782 case 1:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
783 case 2:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
784 case 3:
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
785 render_sprite_cells(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
786 break;
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
787 //sprite attribute table scan starts
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
788 case 4:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
789 render_sprite_cells( context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
790 context->sprite_index = 0x80;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
791 context->slot_counter = MAX_SPRITES_LINE_H32;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
792 scan_sprite_table(line, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
793 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
794 case 5:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
795 case 6:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
796 case 7:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
797 case 8:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
798 case 9:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
799 case 10:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
800 case 11:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
801 case 12:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
802 case 13:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
803 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
804 scan_sprite_table(line, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
805 case 14:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
806 external_slot(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
807 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
808 case 15:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
809 case 16:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
810 case 17:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
811 case 18:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
812 case 19:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
813 //HSYNC start
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
814 case 20:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
815 case 21:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
816 case 22:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
817 case 23:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
818 case 24:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
819 case 25:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
820 case 26:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
821 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
822 scan_sprite_table(line, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
823 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
824 case 27:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
825 external_slot(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
826 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
827 case 28:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
828 address = (context->regs[REG_HSCROLL] & 0x3F) << 10;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
829 mask = 0;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
830 if (context->regs[REG_MODE_3] & 0x2) {
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
831 mask |= 0xF8;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
832 }
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
833 if (context->regs[REG_MODE_3] & 0x1) {
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
834 mask |= 0x7;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
835 }
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
836 line &= mask;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
837 address += line * 4;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
838 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
839 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
840 //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
841 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
842 case 29:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
843 case 30:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
844 case 31:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
845 case 32:
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
846 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
847 scan_sprite_table(line, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
848 break;
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
849 //!HSYNC high
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
850 case 33:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
851 read_map_scroll_a(0, line, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
852 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
853 case 34:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
854 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
855 scan_sprite_table(line, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
856 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
857 case 35:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
858 render_map_1(context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
859 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
860 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
861 case 36:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
862 render_map_2(context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
863 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
864 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
865 case 37:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
866 read_map_scroll_b(0, line, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
867 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
868 case 38:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
869 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
870 scan_sprite_table(line, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
871 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
872 case 39:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
873 render_map_3(context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
874 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
875 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
876 case 40:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
877 render_map_output(line, 0, context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
878 scan_sprite_table(line, context);//Just a guess
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
879 //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
880 //filled rather than the number of available slots
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
881 //context->slot_counter = MAX_SPRITES_LINE - context->slot_counter;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
882 context->cur_slot = MAX_SPRITES_LINE_H32-1;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
883 context->sprite_draws = MAX_DRAWS_H32;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
884 context->flags &= (~FLAG_CAN_MASK & ~FLAG_MASKED);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
885 break;
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
886 COLUMN_RENDER_BLOCK(2, 41)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
887 COLUMN_RENDER_BLOCK(4, 49)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
888 COLUMN_RENDER_BLOCK(6, 57)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
889 COLUMN_RENDER_BLOCK_REFRESH(8, 65)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
890 COLUMN_RENDER_BLOCK(10, 73)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
891 COLUMN_RENDER_BLOCK(12, 81)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
892 COLUMN_RENDER_BLOCK(14, 89)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
893 COLUMN_RENDER_BLOCK_REFRESH(16, 97)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
894 COLUMN_RENDER_BLOCK(18, 105)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
895 COLUMN_RENDER_BLOCK(20, 113)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
896 COLUMN_RENDER_BLOCK(22, 121)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
897 COLUMN_RENDER_BLOCK_REFRESH(24, 129)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
898 COLUMN_RENDER_BLOCK(26, 137)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
899 COLUMN_RENDER_BLOCK(28, 145)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
900 COLUMN_RENDER_BLOCK(30, 153)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
901 COLUMN_RENDER_BLOCK_REFRESH(32, 161)
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
902 case 169:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
903 case 170:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
904 external_slot(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
905 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
906 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
907 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
908 void latch_mode(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
909 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
910 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
911 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
912
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
913 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
914 {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
915 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
916 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
917 linecyc = linecyc/16;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
918 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
919 } else {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
920 linecyc = linecyc/20;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
921 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
922 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
923 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
924
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
925 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
926 {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
927 if (line > 0) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
928 line -= 1;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
929 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
930 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
931 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
932 linecyc /= 16;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
933 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
934 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
935 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
936 end = start + 16;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
937 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
938 } else {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
939 linecyc /= 20;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
940 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
941 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
942 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
943 end = start + 16;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
944 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
945 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
946 while (start != end) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
947 *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
948 ++start;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
949 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
950 }
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
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
953 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
954 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
955 while(context->cycles < target_cycles)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
956 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
957 uint32_t line = context->cycles / MCLKS_LINE;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
958 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
959 if (!line) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
960 latch_mode(context);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
961 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
962 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
963 //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
964 //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
965 line = (line - 1) & 0xFF;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
966 uint32_t linecyc = context->cycles % MCLKS_LINE;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
967
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
968 //Convert to slot number
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
969 if (context->latched_mode & BIT_H40){
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
970 //TODO: Deal with nasty clock switching during HBLANK
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
971 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
972 vdp_h40(line, linecyc, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
973 context->cycles += 16;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
974 } else {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
975 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
976 vdp_h32(line, linecyc, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
977 context->cycles += 20;
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 } else {
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
980 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
981 external_slot(context);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
982 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
983 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
984 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
985 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
986 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
987 //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
988 context->cycles += 16;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
989 } else {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
990 context->cycles += 20;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
991 }
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 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
994 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
995
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
996 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
997 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
998 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
999 vdp_run_context(context, target_cycles);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1000 return context->cycles;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1001 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1002
75
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1003 void vdp_run_dma_done(vdp_context * context, uint32_t target_cycles)
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1004 {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1005 for(;;) {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1006 uint32_t dmalen = (context->regs[REG_DMALEN_H] << 8) | context->regs[REG_DMALEN_L];
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1007 if (!dmalen) {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1008 dmalen = 0x10000;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1009 }
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1010 uint32_t min_dma_complete = dmalen * (context->latched_mode & BIT_H40 ? 16 : 20);
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1011 if ((context->regs[REG_DMASRC_H] & 0xC0) == 0xC0 || (context->cd & 0xF) == VRAM_WRITE) {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1012 //DMA copies take twice as long to complete since they require a read and a write
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1013 //DMA Fills and transfers to VRAM also take twice as long as it requires 2 writes for a single word
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1014 min_dma_complete *= 2;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1015 }
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1016 min_dma_complete += context->cycles;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1017 if (target_cycles < min_dma_complete) {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1018 vdp_run_context(context, target_cycles);
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1019 return;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1020 } else {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1021 vdp_run_context(context, min_dma_complete);
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1022 if (!(context->flags & FLAG_DMA_RUN)) {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1023 return;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1024 }
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1025 }
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1026 }
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1027 }
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1028
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1029 int vdp_control_port_write(vdp_context * context, uint16_t value)
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1030 {
58
a6a19c45d358 Properly zero-init all VDP buffers. Comment out some debug printfs.
Mike Pavone <pavone@retrodev.com>
parents: 56
diff changeset
1031 //printf("control port write: %X\n", value);
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1032 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
1033 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
1034 context->cd = (context->cd & 0x3) | ((value >> 2) & 0x3C);
75
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1035 context->flags &= ~FLAG_PENDING;
87
60b5c9e2f4e0 vertical interrupts now work
Mike Pavone <pavone@retrodev.com>
parents: 84
diff changeset
1036 //printf("New Address: %X, New CD: %X\n", context->address, context->cd);
75
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1037 if (context->cd & 0x20) {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1038 if((context->regs[REG_DMASRC_H] & 0xC0) != 0x80) {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1039 //DMA copy or 68K -> VDP, transfer starts immediately
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1040 context->flags |= FLAG_DMA_RUN;
131
8fc8e46be691 Fix bug that was causing DMA fills to lock up under certain circumstances
Mike Pavone <pavone@retrodev.com>
parents: 109
diff changeset
1041 context->dma_cd = context->cd;
75
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1042 if (!(context->regs[REG_DMASRC_H] & 0x80)) {
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1043 return 1;
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1044 }
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1045 }
63
a6dd5b7a971b Add FPS counter to console output
Mike Pavone <pavone@retrodev.com>
parents: 58
diff changeset
1046 }
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1047 } else {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1048 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
1049 //Register write
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1050 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
1051 if (reg < VDP_REGS) {
87
60b5c9e2f4e0 vertical interrupts now work
Mike Pavone <pavone@retrodev.com>
parents: 84
diff changeset
1052 //printf("register %d set to %X\n", reg, value & 0xFF);
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1053 context->regs[reg] = value;
87
60b5c9e2f4e0 vertical interrupts now work
Mike Pavone <pavone@retrodev.com>
parents: 84
diff changeset
1054 /*if (reg == REG_MODE_2) {
63
a6dd5b7a971b Add FPS counter to console output
Mike Pavone <pavone@retrodev.com>
parents: 58
diff changeset
1055 printf("Display is now %s\n", (context->regs[REG_MODE_2] & DISPLAY_ENABLE) ? "enabled" : "disabled");
87
60b5c9e2f4e0 vertical interrupts now work
Mike Pavone <pavone@retrodev.com>
parents: 84
diff changeset
1056 }*/
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1057 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1058 } else {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1059 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
1060 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
1061 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
1062 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1063 }
75
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1064 return 0;
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1065 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1066
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1067 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
1068 {
58
a6a19c45d358 Properly zero-init all VDP buffers. Comment out some debug printfs.
Mike Pavone <pavone@retrodev.com>
parents: 56
diff changeset
1069 //printf("data port write: %X\n", value);
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1070 context->flags &= ~FLAG_PENDING;
109
004dd46e0a97 COmment out fifo full debug printf
Mike Pavone <pavone@retrodev.com>
parents: 108
diff changeset
1071 /*if (context->fifo_cur == context->fifo_end) {
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1072 printf("FIFO full, waiting for space before next write at cycle %X\n", context->cycles);
109
004dd46e0a97 COmment out fifo full debug printf
Mike Pavone <pavone@retrodev.com>
parents: 108
diff changeset
1073 }*/
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1074 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
1075 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
1076 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1077 context->fifo_cur->cycle = context->cycles;
138
aa3e1bb338c9 Fix VDP reads
Mike Pavone <pavone@retrodev.com>
parents: 137
diff changeset
1078 context->fifo_cur->address = context->address;
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1079 context->fifo_cur->value = value;
138
aa3e1bb338c9 Fix VDP reads
Mike Pavone <pavone@retrodev.com>
parents: 137
diff changeset
1080 context->fifo_cur->cd = context->cd;
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1081 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
1082 context->fifo_cur++;
138
aa3e1bb338c9 Fix VDP reads
Mike Pavone <pavone@retrodev.com>
parents: 137
diff changeset
1083 context->address += context->regs[REG_AUTOINC];
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1084 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1085
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1086 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
1087 {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1088 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
1089 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
1090 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
1091 value |= 0x200;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1092 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1093 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
1094 value |= 0x100;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1095 }
141
576f55711d8d Fix DMA in progress flag in VDP status register
Mike Pavone <pavone@retrodev.com>
parents: 138
diff changeset
1096 if ((context->regs[REG_MODE_2] & BIT_DMA_ENABLE) && (context->flags & FLAG_DMA_RUN)) {
576f55711d8d Fix DMA in progress flag in VDP status register
Mike Pavone <pavone@retrodev.com>
parents: 138
diff changeset
1097 value |= 0x2;
75
108e587165c0 Implement DMA (untested)
Mike Pavone <pavone@retrodev.com>
parents: 65
diff changeset
1098 }
137
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1099 uint32_t line= context->cycles / MCLKS_LINE;
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1100 if (line >= (context->latched_mode & BIT_PAL ? PAL_ACTIVE : NTSC_ACTIVE)) {
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1101 value |= 0x8;
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1102 }
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1103 //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
1104 return value;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1105 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1106
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1107 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
1108 {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1109 context->flags &= ~FLAG_PENDING;
138
aa3e1bb338c9 Fix VDP reads
Mike Pavone <pavone@retrodev.com>
parents: 137
diff changeset
1110 if (context->cd & 1) {
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1111 return 0;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1112 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1113 //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
1114 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
1115 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
1116 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
1117 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1118 uint16_t value = 0;
138
aa3e1bb338c9 Fix VDP reads
Mike Pavone <pavone@retrodev.com>
parents: 137
diff changeset
1119 switch (context->cd & 0xF)
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1120 {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1121 case VRAM_READ:
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1122 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
1123 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
1124 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
1125 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
1126 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1127 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
1128 break;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1129 case CRAM_READ:
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1130 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
1131 break;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1132 case VSRAM_READ:
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1133 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
1134 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
1135 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1136 break;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1137 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1138 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
1139 return value;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1140 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1141
137
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1142 uint16_t vdp_hv_counter_read(vdp_context * context)
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1143 {
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1144 uint32_t line= context->cycles / MCLKS_LINE;
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1145 if (!line) {
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1146 line = 0xFF;
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1147 } else {
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1148 line--;
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1149 if (line > 0xEA) {
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1150 line = (line + 0xFA) & 0xFF;
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1151 }
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1152 }
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1153 uint32_t linecyc = context->cycles % MCLKS_LINE;
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1154 if (context->latched_mode & BIT_H40) {
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1155 linecyc /= 8;
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1156 if (linecyc >= 86) {
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1157 linecyc -= 86;
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1158 } else {
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1159 linecyc += 334;
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1160 }
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1161 if (linecyc > 0x16C) {
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1162 linecyc += 92;
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1163 }
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1164 } else {
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1165 linecyc /= 10;
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1166 if (linecyc >= 74) {
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1167 linecyc -= 74;
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1168 } else {
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1169 linecyc += 268;
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1170 }
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1171 if (linecyc > 0x127) {
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1172 linecyc += 170;
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1173 }
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1174 }
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1175 linecyc &= 0xFF;
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1176 return (line << 8) | linecyc;
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1177 }
0e7e1ccc0a81 Implemented HV counter
Mike Pavone <pavone@retrodev.com>
parents: 135
diff changeset
1178
65
aef6302770c2 Fix issue in which VDP would have trouble emptying FIFO because the VDP cycle count got reset at end of frame.
Mike Pavone <pavone@retrodev.com>
parents: 63
diff changeset
1179 void vdp_adjust_cycles(vdp_context * context, uint32_t deduction)
aef6302770c2 Fix issue in which VDP would have trouble emptying FIFO because the VDP cycle count got reset at end of frame.
Mike Pavone <pavone@retrodev.com>
parents: 63
diff changeset
1180 {
aef6302770c2 Fix issue in which VDP would have trouble emptying FIFO because the VDP cycle count got reset at end of frame.
Mike Pavone <pavone@retrodev.com>
parents: 63
diff changeset
1181 context->cycles -= deduction;
aef6302770c2 Fix issue in which VDP would have trouble emptying FIFO because the VDP cycle count got reset at end of frame.
Mike Pavone <pavone@retrodev.com>
parents: 63
diff changeset
1182 for(fifo_entry * start = (context->fifo_end - FIFO_SIZE); start < context->fifo_cur; start++) {
aef6302770c2 Fix issue in which VDP would have trouble emptying FIFO because the VDP cycle count got reset at end of frame.
Mike Pavone <pavone@retrodev.com>
parents: 63
diff changeset
1183 if (start->cycle >= deduction) {
aef6302770c2 Fix issue in which VDP would have trouble emptying FIFO because the VDP cycle count got reset at end of frame.
Mike Pavone <pavone@retrodev.com>
parents: 63
diff changeset
1184 start->cycle -= deduction;
aef6302770c2 Fix issue in which VDP would have trouble emptying FIFO because the VDP cycle count got reset at end of frame.
Mike Pavone <pavone@retrodev.com>
parents: 63
diff changeset
1185 } else {
aef6302770c2 Fix issue in which VDP would have trouble emptying FIFO because the VDP cycle count got reset at end of frame.
Mike Pavone <pavone@retrodev.com>
parents: 63
diff changeset
1186 start->cycle = 0;
aef6302770c2 Fix issue in which VDP would have trouble emptying FIFO because the VDP cycle count got reset at end of frame.
Mike Pavone <pavone@retrodev.com>
parents: 63
diff changeset
1187 }
aef6302770c2 Fix issue in which VDP would have trouble emptying FIFO because the VDP cycle count got reset at end of frame.
Mike Pavone <pavone@retrodev.com>
parents: 63
diff changeset
1188 }
aef6302770c2 Fix issue in which VDP would have trouble emptying FIFO because the VDP cycle count got reset at end of frame.
Mike Pavone <pavone@retrodev.com>
parents: 63
diff changeset
1189 }
aef6302770c2 Fix issue in which VDP would have trouble emptying FIFO because the VDP cycle count got reset at end of frame.
Mike Pavone <pavone@retrodev.com>
parents: 63
diff changeset
1190
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1191 #define GST_VDP_REGS 0xFA
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1192 #define GST_VDP_MEM 0x12478
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1193
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1194 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
1195 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1196 uint8_t tmp_buf[CRAM_SIZE*2];
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1197 fseek(state_file, GST_VDP_REGS, SEEK_SET);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1198 fread(context->regs, 1, VDP_REGS, state_file);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1199 latch_mode(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1200 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
1201 for (int i = 0; i < CRAM_SIZE; i++) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1202 context->cram[i] = (tmp_buf[i*2+1] << 8) | tmp_buf[i*2];
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1203 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1204 fread(tmp_buf, 2, VSRAM_SIZE, state_file);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1205 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
1206 context->vsram[i] = (tmp_buf[i*2+1] << 8) | tmp_buf[i*2];
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1207 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1208 fseek(state_file, GST_VDP_MEM, SEEK_SET);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1209 fread(context->vdpmem, 1, VRAM_SIZE, state_file);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
1210 }
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
1211
56
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents: 54
diff changeset
1212 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
1213 {
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents: 54
diff changeset
1214 uint8_t tmp_buf[CRAM_SIZE*2];
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents: 54
diff changeset
1215 fseek(outfile, GST_VDP_REGS, SEEK_SET);
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents: 54
diff changeset
1216 fwrite(context->regs, 1, VDP_REGS, outfile);
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents: 54
diff changeset
1217 for (int i = 0; i < CRAM_SIZE; i++) {
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents: 54
diff changeset
1218 tmp_buf[i*2] = context->cram[i];
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents: 54
diff changeset
1219 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
1220 }
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents: 54
diff changeset
1221 fwrite(tmp_buf, 1, sizeof(tmp_buf), outfile);
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents: 54
diff changeset
1222 for (int i = 0; i < VSRAM_SIZE; i++) {
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents: 54
diff changeset
1223 tmp_buf[i*2] = context->vsram[i];
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents: 54
diff changeset
1224 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
1225 }
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents: 54
diff changeset
1226 fwrite(tmp_buf, 2, VSRAM_SIZE, outfile);
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents: 54
diff changeset
1227 fseek(outfile, GST_VDP_MEM, SEEK_SET);
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents: 54
diff changeset
1228 fwrite(context->vdpmem, 1, VRAM_SIZE, outfile);
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents: 54
diff changeset
1229 }
a28b1dfe1af2 Fix CRAM and possibly VSRAM writes
Mike Pavone <pavone@retrodev.com>
parents: 54
diff changeset
1230