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annotate vdp.c @ 54:3b79cbcf6846

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Get Flavio's color bar demo kind of sort of working
author Mike Pavone <pavone@retrodev.com>
date Tue, 18 Dec 2012 02:16:42 -0800
parents 3fc57e1a2c56
children a28b1dfe1af2
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1 #include "vdp.h"
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2 #include <stdlib.h>
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3 #include <string.h>
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4
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5 #define NTSC_ACTIVE 225
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6 #define PAL_ACTIVE 241
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7 #define BUF_BIT_PRIORITY 0x40
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8 #define MAP_BIT_PRIORITY 0x8000
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9 #define MAP_BIT_H_FLIP 0x800
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10 #define MAP_BIT_V_FLIP 0x1000
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12 #define BIT_PAL 0x8
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13 #define BIT_H40 0x1
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15 #define SCROLL_BUFFER_SIZE 32
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16 #define SCROLL_BUFFER_DRAW 16
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17
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18 #define FLAG_DOT_OFLOW 0x1
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19 #define FLAG_CAN_MASK 0x2
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20 #define FLAG_MASKED 0x4
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21 #define FLAG_WINDOW 0x8
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22 #define FLAG_PENDING 0x10
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23 #define FLAG_UNUSED_SLOT 0x20
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25 #define FIFO_SIZE 4
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26
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27 void init_vdp_context(vdp_context * context)
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28 {
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29 memset(context, 0, sizeof(context));
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30 context->vdpmem = malloc(VRAM_SIZE);
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31 context->framebuf = malloc(FRAMEBUF_SIZE);
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32 memset(context->framebuf, 0, FRAMEBUF_SIZE);
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33 context->linebuf = malloc(LINEBUF_SIZE + SCROLL_BUFFER_SIZE*2);
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34 memset(context->linebuf, 0, LINEBUF_SIZE + SCROLL_BUFFER_SIZE*2);
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35 context->tmp_buf_a = context->linebuf + LINEBUF_SIZE;
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36 context->tmp_buf_b = context->tmp_buf_a + SCROLL_BUFFER_SIZE;
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37 context->sprite_draws = MAX_DRAWS;
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38 context->fifo_cur = malloc(sizeof(fifo_entry) * FIFO_SIZE);
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39 context->fifo_end = context->fifo_cur + FIFO_SIZE;
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40 }
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41
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42 void render_sprite_cells(vdp_context * context)
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43 {
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44 if (context->cur_slot >= context->sprite_draws) {
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45 sprite_draw * d = context->sprite_draw_list + context->cur_slot;
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46
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47 uint16_t dir;
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48 int16_t x;
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49 if (d->h_flip) {
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50 x = d->x_pos + 7;
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51 dir = -1;
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52 } else {
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53 x = d->x_pos;
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54 dir = 1;
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55 }
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56 //printf("Draw Slot %d of %d, Rendering sprite cell from %X to x: %d\n", context->cur_slot, context->sprite_draws, d->address, x);
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57 context->cur_slot--;
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58 for (uint16_t address = d->address; address < d->address+4; address++) {
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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] >> 4) | d->pal_priority;
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61 }
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62 x += dir;
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63 if (x >= 0 && x < 320 && !(context->linebuf[x] & 0xF)) {
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64 context->linebuf[x] = (context->vdpmem[address] & 0xF) | d->pal_priority;
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65 }
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66 x += dir;
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67 }
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68 }
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69 }
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71 void scan_sprite_table(uint32_t line, vdp_context * context)
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72 {
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73 if (context->sprite_index && context->slot_counter) {
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74 line += 1;
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75 line &= 0xFF;
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76 context->sprite_index &= 0x7F;
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77 if (context->latched_mode & BIT_H40) {
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78 if (context->sprite_index >= MAX_SPRITES_FRAME) {
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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 } else if(context->sprite_index >= MAX_SPRITES_FRAME_H32) {
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83 context->sprite_index = 0;
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84 return;
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85 }
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86 //TODO: Read from SAT cache rather than from VRAM
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87 uint16_t sat_address = (context->regs[REG_SAT] & 0x7F) << 9;
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88 uint16_t address = context->sprite_index * 8 + sat_address;
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89 int16_t y = ((context->vdpmem[address] & 0x3) << 8 | context->vdpmem[address+1]) - 128;
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90 uint8_t height = ((context->vdpmem[address+2] & 0x3) + 1) * 8;
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91 //printf("Sprite %d | y: %d, height: %d\n", context->sprite_index, y, height);
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92 if (y <= line && line < (y + height)) {
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93 //printf("Sprite %d at y: %d with height %d is on line %d\n", context->sprite_index, y, height, line);
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94 context->sprite_info_list[--(context->slot_counter)].size = context->vdpmem[address+2];
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95 context->sprite_info_list[context->slot_counter].index = context->sprite_index;
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96 context->sprite_info_list[context->slot_counter].y = y;
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97 }
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98 context->sprite_index = context->vdpmem[address+3] & 0x7F;
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99 if (context->sprite_index && context->slot_counter)
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100 {
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101 address = context->sprite_index * 8 + sat_address;
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102 y = ((context->vdpmem[address] & 0x3) << 8 | context->vdpmem[address+1]) - 128;
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103 height = ((context->vdpmem[address+2] & 0x3) + 1) * 8;
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104 if (y <= line && line < (y + height)) {
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105 //printf("Sprite %d at y: %d with height %d is on line %d\n", context->sprite_index, y, height, line);
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106 context->sprite_info_list[--(context->slot_counter)].size = context->vdpmem[address+2];
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107 context->sprite_info_list[context->slot_counter].index = context->sprite_index;
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108 context->sprite_info_list[context->slot_counter].y = y;
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109 }
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110 context->sprite_index = context->vdpmem[address+3] & 0x7F;
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111 }
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112 }
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113 }
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115 void read_sprite_x(uint32_t line, vdp_context * context)
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116 {
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117 if (context->cur_slot >= context->slot_counter) {
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118 if (context->sprite_draws) {
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119 line += 1;
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120 line &= 0xFF;
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121 //in tiles
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122 uint8_t width = ((context->sprite_info_list[context->cur_slot].size >> 2) & 0x3) + 1;
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123 //in pixels
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124 uint8_t height = ((context->sprite_info_list[context->cur_slot].size & 0x3) + 1) * 8;
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125 uint16_t att_addr = ((context->regs[REG_SAT] & 0x7F) << 9) + context->sprite_info_list[context->cur_slot].index * 8 + 4;
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126 uint16_t tileinfo = (context->vdpmem[att_addr] << 8) | context->vdpmem[att_addr+1];
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127 uint8_t pal_priority = (tileinfo >> 9) & 0x70;
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diff changeset
128 uint8_t row;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
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parents: 32
diff changeset
129 if (tileinfo & MAP_BIT_V_FLIP) {
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
130 row = (context->sprite_info_list[context->cur_slot].y + height - 1) - line;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
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parents: 32
diff changeset
131 } else {
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
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parents: 32
diff changeset
132 row = line-context->sprite_info_list[context->cur_slot].y;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
133 }
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
134 uint16_t address = ((tileinfo & 0x7FF) << 5) + row * 4;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
135 int16_t x = ((context->vdpmem[att_addr+ 2] & 0x3) << 8) | context->vdpmem[att_addr + 3];
36
04672c060062 Pass all sprite masking tests
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parents: 35
diff changeset
136 if (x) {
04672c060062 Pass all sprite masking tests
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parents: 35
diff changeset
137 context->flags |= FLAG_CAN_MASK;
04672c060062 Pass all sprite masking tests
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parents: 35
diff changeset
138 } else if(context->flags & (FLAG_CAN_MASK | FLAG_DOT_OFLOW)) {
04672c060062 Pass all sprite masking tests
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parents: 35
diff changeset
139 context->flags |= FLAG_MASKED;
04672c060062 Pass all sprite masking tests
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parents: 35
diff changeset
140 }
04672c060062 Pass all sprite masking tests
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parents: 35
diff changeset
141
04672c060062 Pass all sprite masking tests
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parents: 35
diff changeset
142 context->flags &= ~FLAG_DOT_OFLOW;
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parents: 35
diff changeset
143 int16_t i;
04672c060062 Pass all sprite masking tests
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parents: 35
diff changeset
144 if (context->flags & FLAG_MASKED) {
04672c060062 Pass all sprite masking tests
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parents: 35
diff changeset
145 for (i=0; i < width && context->sprite_draws; i++) {
04672c060062 Pass all sprite masking tests
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parents: 35
diff changeset
146 --context->sprite_draws;
04672c060062 Pass all sprite masking tests
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parents: 35
diff changeset
147 context->sprite_draw_list[context->sprite_draws].x_pos = -128;
34
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
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parents: 32
diff changeset
148 }
36
04672c060062 Pass all sprite masking tests
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parents: 35
diff changeset
149 } else {
34
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
150 x -= 128;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
151 int16_t base_x = x;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
152 int16_t dir;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
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parents: 32
diff changeset
153 if (tileinfo & MAP_BIT_H_FLIP) {
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
154 x += (width-1) * 8;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
155 dir = -8;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
156 } else {
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
157 dir = 8;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
158 }
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
159 //printf("Sprite %d | x: %d, y: %d, width: %d, height: %d, pal_priority: %X, row: %d, tile addr: %X\n", context->sprite_info_list[context->cur_slot].index, x, context->sprite_info_list[context->cur_slot].y, width, height, pal_priority, row, address);
35
233c7737c152 Small fix to overflow flag
Mike Pavone <pavone@retrodev.com>
parents: 34
diff changeset
160 for (i=0; i < width && context->sprite_draws; i++, x += dir) {
34
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
161 --context->sprite_draws;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
162 context->sprite_draw_list[context->sprite_draws].address = address + i * height * 4;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
163 context->sprite_draw_list[context->sprite_draws].x_pos = x;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
164 context->sprite_draw_list[context->sprite_draws].pal_priority = pal_priority;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
165 context->sprite_draw_list[context->sprite_draws].h_flip = (tileinfo & MAP_BIT_H_FLIP) ? 1 : 0;
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
166 }
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
167 }
36
04672c060062 Pass all sprite masking tests
Mike Pavone <pavone@retrodev.com>
parents: 35
diff changeset
168 if (i < width) {
04672c060062 Pass all sprite masking tests
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parents: 35
diff changeset
169 context->flags |= FLAG_DOT_OFLOW;
04672c060062 Pass all sprite masking tests
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parents: 35
diff changeset
170 }
04672c060062 Pass all sprite masking tests
Mike Pavone <pavone@retrodev.com>
parents: 35
diff changeset
171 context->cur_slot--;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
172 } else {
34
0e7df84158b1 Improve sprite masking to almost completely pass Nemesis' sprite masking test
Mike Pavone <pavone@retrodev.com>
parents: 32
diff changeset
173 context->flags |= FLAG_DOT_OFLOW;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
174 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
175 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
176 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
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parents:
diff changeset
177
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
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parents: 43
diff changeset
178 #define VRAM_READ 0
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
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parents: 43
diff changeset
179 #define VRAM_WRITE 1
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
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parents: 43
diff changeset
180 #define CRAM_READ 8
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
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parents: 43
diff changeset
181 #define CRAM_WRITE 3
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
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parents: 43
diff changeset
182 #define VSRAM_READ 4
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
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parents: 43
diff changeset
183 #define VSRAM_WRITE 5
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
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parents: 43
diff changeset
184
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
185 void external_slot(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
186 {
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
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parents: 43
diff changeset
187 fifo_entry * start = (context->fifo_end - FIFO_SIZE);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
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parents: 43
diff changeset
188 //TODO: Implement DMA
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
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parents: 43
diff changeset
189 if (context->fifo_cur != start && start->cycle <= context->cycles) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
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parents: 43
diff changeset
190 switch (context->cd & 0x7)
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
191 {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
192 case VRAM_WRITE:
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
193 if (start->partial) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
194 printf("VRAM Write: %X to %X\n", start->value, context->address ^ 1);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
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parents: 43
diff changeset
195 context->vdpmem[context->address ^ 1] = start->value;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
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parents: 43
diff changeset
196 } else {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
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parents: 43
diff changeset
197 printf("VRAM Write: %X to %X\n", start->value >> 8, context->address);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
198 context->vdpmem[context->address] = start->value >> 8;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
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parents: 43
diff changeset
199 start->partial = 1;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
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parents: 43
diff changeset
200 //skip auto-increment and removal of entry from fifo
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
201 return;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
202 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
203 break;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
204 case CRAM_WRITE:
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
205 printf("CRAM Write: %X to %X\n", start->value, context->address);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
206 context->cram[context->address & (CRAM_SIZE-1)] = start->value;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
207 break;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
208 case VSRAM_WRITE:
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
209 if ((context->address & 63) < VSRAM_SIZE) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
210 printf("VSRAM Write: %X to %X\n", start->value, context->address);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
211 context->vsram[context->address & 63] = start->value;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
212 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
213 break;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
214 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
215 context->address += context->regs[REG_AUTOINC];
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
216 fifo_entry * cur = start+1;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
217 if (cur < context->fifo_cur) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
218 memmove(start, cur, sizeof(fifo_entry) * (context->fifo_cur - cur));
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
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parents: 43
diff changeset
219 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
220 context->fifo_cur -= 1;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
221 } else {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
222 context->flags |= FLAG_UNUSED_SLOT;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
223 }
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
224 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
225
40
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
226 #define WINDOW_RIGHT 0x80
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
227 #define WINDOW_DOWN 0x80
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
228
25
4d0c20ad815a Fix vertical scroll value for plane B
Mike Pavone <pavone@retrodev.com>
parents: 24
diff changeset
229 void read_map_scroll(uint16_t column, uint16_t vsram_off, uint32_t line, uint16_t address, uint16_t hscroll_val, vdp_context * context)
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
230 {
40
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
231 if (!vsram_off) {
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
232 uint16_t left_col, right_col;
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
233 if (context->regs[REG_WINDOW_H] & WINDOW_RIGHT) {
41
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
234 left_col = (context->regs[REG_WINDOW_H] & 0x1F) * 2;
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
235 right_col = 42;
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
236 } else {
40
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
237 left_col = 0;
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
238 right_col = (context->regs[REG_WINDOW_H] & 0x1F) * 2;
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
239 if (right_col) {
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
240 right_col += 2;
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
241 }
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
242 }
41
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
243 uint16_t top_line, bottom_line;
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
244 if (context->regs[REG_WINDOW_V] & WINDOW_DOWN) {
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
245 top_line = (context->regs[REG_WINDOW_V] & 0x1F) * 8;
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
246 bottom_line = 241;
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
247 } else {
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
248 top_line = 0;
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
249 bottom_line = (context->regs[REG_WINDOW_V] & 0x1F) * 8;
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
250 }
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
251 if ((column >= left_col && column < right_col) || (line >= top_line && line < bottom_line)) {
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
252 uint16_t address = context->regs[REG_WINDOW] << 10;
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
253 uint16_t line_offset, offset, mask;
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
254 if (context->latched_mode & BIT_H40) {
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
255 address &= 0xF000;
42
6653e67a6811 Fix bug in tile address masking. Remove some debug code from window plane.
Mike Pavone <pavone@retrodev.com>
parents: 41
diff changeset
256 line_offset = (((line) / 8) * 64 * 2) & 0xFFF;
41
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
257 mask = 0x7F;
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
258
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
259 } else {
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
260 address &= 0xF800;
42
6653e67a6811 Fix bug in tile address masking. Remove some debug code from window plane.
Mike Pavone <pavone@retrodev.com>
parents: 41
diff changeset
261 line_offset = (((line) / 8) * 32 * 2) & 0xFFF;
41
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
262 mask = 0x3F;
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
263 }
42
6653e67a6811 Fix bug in tile address masking. Remove some debug code from window plane.
Mike Pavone <pavone@retrodev.com>
parents: 41
diff changeset
264 offset = address + line_offset + (((column - 2) * 2) & mask);
41
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
265 context->col_1 = (context->vdpmem[offset] << 8) | context->vdpmem[offset+1];
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
266 //printf("Window | top: %d, bot: %d, left: %d, right: %d, base: %X, line: %X offset: %X, tile: %X, reg: %X\n", top_line, bottom_line, left_col, right_col, address, line_offset, offset, ((context->col_1 & 0x3FF) << 5), context->regs[REG_WINDOW]);
42
6653e67a6811 Fix bug in tile address masking. Remove some debug code from window plane.
Mike Pavone <pavone@retrodev.com>
parents: 41
diff changeset
267 offset = address + line_offset + (((column - 1) * 2) & mask);
41
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
268 context->col_2 = (context->vdpmem[offset] << 8) | context->vdpmem[offset+1];
42
6653e67a6811 Fix bug in tile address masking. Remove some debug code from window plane.
Mike Pavone <pavone@retrodev.com>
parents: 41
diff changeset
269 context->v_offset = (line) & 0x7;
41
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
270 context->flags |= FLAG_WINDOW;
e591004487bc More correct window support, maybe
Mike Pavone <pavone@retrodev.com>
parents: 40
diff changeset
271 return;
40
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
272 }
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
273 context->flags &= ~FLAG_WINDOW;
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
274 }
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
275 uint16_t vscroll;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
276 switch(context->regs[REG_SCROLL] & 0x30)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
277 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
278 case 0:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
279 vscroll = 0xFF;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
280 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
281 case 0x10:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
282 vscroll = 0x1FF;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
283 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
284 case 0x20:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
285 //TODO: Verify this behavior
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
286 vscroll = 0;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
287 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
288 case 0x30:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
289 vscroll = 0x3FF;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
290 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
291 }
25
4d0c20ad815a Fix vertical scroll value for plane B
Mike Pavone <pavone@retrodev.com>
parents: 24
diff changeset
292 vscroll &= (context->vsram[(context->regs[REG_MODE_3] & 0x4 ? column : 0) + vsram_off] + line);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
293 context->v_offset = vscroll & 0x7;
26
a7c2b92d8056 Fix management of context->sprite_draws so the sprite layer only draws when it should
Mike Pavone <pavone@retrodev.com>
parents: 25
diff changeset
294 //printf("%s | line %d, vsram: %d, vscroll: %d, v_offset: %d\n",(vsram_off ? "B" : "A"), line, context->vsram[context->regs[REG_MODE_3] & 0x4 ? column : 0], vscroll, context->v_offset);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
295 vscroll /= 8;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
296 uint16_t hscroll_mask;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
297 uint16_t v_mul;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
298 switch(context->regs[REG_SCROLL] & 0x3)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
299 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
300 case 0:
39
3c69319269ef Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
Mike Pavone <pavone@retrodev.com>
parents: 38
diff changeset
301 hscroll_mask = 0xF0;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
302 v_mul = 64;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
303 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
304 case 0x1:
39
3c69319269ef Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
Mike Pavone <pavone@retrodev.com>
parents: 38
diff changeset
305 hscroll_mask = 0x3F;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
306 v_mul = 128;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
307 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
308 case 0x2:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
309 //TODO: Verify this behavior
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
310 hscroll_mask = 0;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
311 v_mul = 0;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
312 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
313 case 0x3:
39
3c69319269ef Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
Mike Pavone <pavone@retrodev.com>
parents: 38
diff changeset
314 hscroll_mask = 0x3F0;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
315 v_mul = 256;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
316 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
317 }
28
037963b4c92d Fix BG plane B render bug
Mike Pavone <pavone@retrodev.com>
parents: 27
diff changeset
318 uint16_t hscroll, offset;
037963b4c92d Fix BG plane B render bug
Mike Pavone <pavone@retrodev.com>
parents: 27
diff changeset
319 for (int i = 0; i < 2; i++) {
39
3c69319269ef Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
Mike Pavone <pavone@retrodev.com>
parents: 38
diff changeset
320 hscroll = (column - 2 + i - ((hscroll_val/8) & 0xFFFE)) & hscroll_mask;
3c69319269ef Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
Mike Pavone <pavone@retrodev.com>
parents: 38
diff changeset
321 offset = address + ((vscroll * v_mul + hscroll*2) & 0x1FFF);
3c69319269ef Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
Mike Pavone <pavone@retrodev.com>
parents: 38
diff changeset
322 //printf("%s | line: %d, col: %d, x: %d, hs_mask %X, scr reg: %X, tbl addr: %X\n", (vsram_off ? "B" : "A"), line, (column-2+i), hscroll, hscroll_mask, context->regs[REG_SCROLL], offset);
28
037963b4c92d Fix BG plane B render bug
Mike Pavone <pavone@retrodev.com>
parents: 27
diff changeset
323 uint16_t col_val = (context->vdpmem[offset] << 8) | context->vdpmem[offset+1];
037963b4c92d Fix BG plane B render bug
Mike Pavone <pavone@retrodev.com>
parents: 27
diff changeset
324 if (i) {
037963b4c92d Fix BG plane B render bug
Mike Pavone <pavone@retrodev.com>
parents: 27
diff changeset
325 context->col_2 = col_val;
037963b4c92d Fix BG plane B render bug
Mike Pavone <pavone@retrodev.com>
parents: 27
diff changeset
326 } else {
037963b4c92d Fix BG plane B render bug
Mike Pavone <pavone@retrodev.com>
parents: 27
diff changeset
327 context->col_1 = col_val;
037963b4c92d Fix BG plane B render bug
Mike Pavone <pavone@retrodev.com>
parents: 27
diff changeset
328 }
037963b4c92d Fix BG plane B render bug
Mike Pavone <pavone@retrodev.com>
parents: 27
diff changeset
329 }
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
330 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
331
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
332 void read_map_scroll_a(uint16_t column, uint32_t line, vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
333 {
25
4d0c20ad815a Fix vertical scroll value for plane B
Mike Pavone <pavone@retrodev.com>
parents: 24
diff changeset
334 read_map_scroll(column, 0, line, (context->regs[REG_SCROLL_A] & 0x38) << 10, context->hscroll_a, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
335 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
336
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
337 void read_map_scroll_b(uint16_t column, uint32_t line, vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
338 {
25
4d0c20ad815a Fix vertical scroll value for plane B
Mike Pavone <pavone@retrodev.com>
parents: 24
diff changeset
339 read_map_scroll(column, 1, line, (context->regs[REG_SCROLL_B] & 0x7) << 13, context->hscroll_b, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
340 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
341
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
342 void render_map(uint16_t col, uint8_t * tmp_buf, vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
343 {
42
6653e67a6811 Fix bug in tile address masking. Remove some debug code from window plane.
Mike Pavone <pavone@retrodev.com>
parents: 41
diff changeset
344 uint16_t address = ((col & 0x7FF) << 5);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
345 if (col & MAP_BIT_V_FLIP) {
43
3fc57e1a2c56 Add debug render mode and fix vertical flip bit for bg tiles
Mike Pavone <pavone@retrodev.com>
parents: 42
diff changeset
346 address += 28 - 4 * context->v_offset;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
347 } else {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
348 address += 4 * context->v_offset;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
349 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
350 uint16_t pal_priority = (col >> 9) & 0x70;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
351 int32_t dir;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
352 if (col & MAP_BIT_H_FLIP) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
353 tmp_buf += 7;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
354 dir = -1;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
355 } else {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
356 dir = 1;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
357 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
358 for (uint32_t i=0; i < 4; i++, address++)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
359 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
360 *tmp_buf = pal_priority | (context->vdpmem[address] >> 4);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
361 tmp_buf += dir;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
362 *tmp_buf = pal_priority | (context->vdpmem[address] & 0xF);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
363 tmp_buf += dir;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
364 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
365 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
366
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
367 void render_map_1(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
368 {
39
3c69319269ef Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
Mike Pavone <pavone@retrodev.com>
parents: 38
diff changeset
369 render_map(context->col_1, context->tmp_buf_a+SCROLL_BUFFER_DRAW, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
370 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
371
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
372 void render_map_2(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
373 {
39
3c69319269ef Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
Mike Pavone <pavone@retrodev.com>
parents: 38
diff changeset
374 render_map(context->col_2, context->tmp_buf_a+SCROLL_BUFFER_DRAW+8, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
375 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
376
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
377 void render_map_3(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
378 {
39
3c69319269ef Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
Mike Pavone <pavone@retrodev.com>
parents: 38
diff changeset
379 render_map(context->col_1, context->tmp_buf_b+SCROLL_BUFFER_DRAW, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
380 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
381
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
382 void render_map_output(uint32_t line, int32_t col, vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
383 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
384 if (line >= 240) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
385 return;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
386 }
39
3c69319269ef Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
Mike Pavone <pavone@retrodev.com>
parents: 38
diff changeset
387 render_map(context->col_2, context->tmp_buf_b+SCROLL_BUFFER_DRAW+8, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
388 uint16_t *dst, *end;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
389 uint8_t *sprite_buf, *plane_a, *plane_b;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
390 if (col)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
391 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
392 col-=2;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
393 dst = context->framebuf + line * 320 + col * 8;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
394 sprite_buf = context->linebuf + col * 8;
43
3fc57e1a2c56 Add debug render mode and fix vertical flip bit for bg tiles
Mike Pavone <pavone@retrodev.com>
parents: 42
diff changeset
395 uint16_t a_src;
40
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
396 if (context->flags & FLAG_WINDOW) {
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
397 plane_a = context->tmp_buf_a + SCROLL_BUFFER_DRAW;
43
3fc57e1a2c56 Add debug render mode and fix vertical flip bit for bg tiles
Mike Pavone <pavone@retrodev.com>
parents: 42
diff changeset
398 a_src = FBUF_SRC_W;
40
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
399 } else {
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
400 plane_a = context->tmp_buf_a + SCROLL_BUFFER_DRAW - (context->hscroll_a & 0xF);
43
3fc57e1a2c56 Add debug render mode and fix vertical flip bit for bg tiles
Mike Pavone <pavone@retrodev.com>
parents: 42
diff changeset
401 a_src = FBUF_SRC_A;
40
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
402 }
39
3c69319269ef Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
Mike Pavone <pavone@retrodev.com>
parents: 38
diff changeset
403 plane_b = context->tmp_buf_b + SCROLL_BUFFER_DRAW - (context->hscroll_b & 0xF);
30
03f9bb57cc54 Small cleanup
Mike Pavone <pavone@retrodev.com>
parents: 29
diff changeset
404 end = dst + 16;
43
3fc57e1a2c56 Add debug render mode and fix vertical flip bit for bg tiles
Mike Pavone <pavone@retrodev.com>
parents: 42
diff changeset
405 uint16_t src;
30
03f9bb57cc54 Small cleanup
Mike Pavone <pavone@retrodev.com>
parents: 29
diff changeset
406 //printf("A | tmp_buf offset: %d\n", 8 - (context->hscroll_a & 0x7));
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
407 for (; dst < end; ++plane_a, ++plane_b, ++sprite_buf, ++dst) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
408 uint8_t pixel;
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
409 if (*sprite_buf & BUF_BIT_PRIORITY && *sprite_buf & 0xF) {
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
410 pixel = *sprite_buf;
43
3fc57e1a2c56 Add debug render mode and fix vertical flip bit for bg tiles
Mike Pavone <pavone@retrodev.com>
parents: 42
diff changeset
411 src = FBUF_SRC_S;
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
412 } else if (*plane_a & BUF_BIT_PRIORITY && *plane_a & 0xF) {
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
413 pixel = *plane_a;
43
3fc57e1a2c56 Add debug render mode and fix vertical flip bit for bg tiles
Mike Pavone <pavone@retrodev.com>
parents: 42
diff changeset
414 src = a_src;
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
415 } else if (*plane_b & BUF_BIT_PRIORITY && *plane_b & 0xF) {
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
416 pixel = *plane_b;
43
3fc57e1a2c56 Add debug render mode and fix vertical flip bit for bg tiles
Mike Pavone <pavone@retrodev.com>
parents: 42
diff changeset
417 src = FBUF_SRC_B;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
418 } else if (*sprite_buf & 0xF) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
419 pixel = *sprite_buf;
43
3fc57e1a2c56 Add debug render mode and fix vertical flip bit for bg tiles
Mike Pavone <pavone@retrodev.com>
parents: 42
diff changeset
420 src = FBUF_SRC_S;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
421 } else if (*plane_a & 0xF) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
422 pixel = *plane_a;
43
3fc57e1a2c56 Add debug render mode and fix vertical flip bit for bg tiles
Mike Pavone <pavone@retrodev.com>
parents: 42
diff changeset
423 src = a_src;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
424 } else if (*plane_b & 0xF){
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
425 pixel = *plane_b;
43
3fc57e1a2c56 Add debug render mode and fix vertical flip bit for bg tiles
Mike Pavone <pavone@retrodev.com>
parents: 42
diff changeset
426 src = FBUF_SRC_B;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
427 } else {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
428 pixel = context->regs[REG_BG_COLOR] & 0x3F;
43
3fc57e1a2c56 Add debug render mode and fix vertical flip bit for bg tiles
Mike Pavone <pavone@retrodev.com>
parents: 42
diff changeset
429 src = FBUF_SRC_BG;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
430 }
43
3fc57e1a2c56 Add debug render mode and fix vertical flip bit for bg tiles
Mike Pavone <pavone@retrodev.com>
parents: 42
diff changeset
431 *dst = context->cram[pixel & 0x3F] | ((pixel & BUF_BIT_PRIORITY) ? FBUF_BIT_PRIORITY : 0) | src;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
432 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
433 } else {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
434 //dst = context->framebuf + line * 320;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
435 //sprite_buf = context->linebuf + col * 8;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
436 //plane_a = context->tmp_buf_a + 16 - (context->hscroll_a & 0x7);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
437 //plane_b = context->tmp_buf_b + 16 - (context->hscroll_b & 0x7);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
438 //end = dst + 8;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
439 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
440
40
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
441 uint16_t remaining;
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
442 if (!(context->flags & FLAG_WINDOW)) {
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
443 remaining = context->hscroll_a & 0xF;
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
444 memcpy(context->tmp_buf_a + SCROLL_BUFFER_DRAW - remaining, context->tmp_buf_a + SCROLL_BUFFER_SIZE - remaining, remaining);
7368a7071908 Broken window support
Mike Pavone <pavone@retrodev.com>
parents: 39
diff changeset
445 }
39
3c69319269ef Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
Mike Pavone <pavone@retrodev.com>
parents: 38
diff changeset
446 remaining = context->hscroll_b & 0xF;
3c69319269ef Horizontal scroll works correctly now. In particular, the SEGA logo in Vectorman has a nice smooth wave like it should
Mike Pavone <pavone@retrodev.com>
parents: 38
diff changeset
447 memcpy(context->tmp_buf_b + SCROLL_BUFFER_DRAW - remaining, context->tmp_buf_b + SCROLL_BUFFER_SIZE - remaining, remaining);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
448 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
449
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
450 #define COLUMN_RENDER_BLOCK(column, startcyc) \
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
451 case startcyc:\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
452 read_map_scroll_a(column, line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
453 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
454 case (startcyc+1):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
455 external_slot(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
456 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
457 case (startcyc+2):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
458 render_map_1(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
459 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
460 case (startcyc+3):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
461 render_map_2(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
462 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
463 case (startcyc+4):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
464 read_map_scroll_b(column, line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
465 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
466 case (startcyc+5):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
467 read_sprite_x(line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
468 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
469 case (startcyc+6):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
470 render_map_3(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
471 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
472 case (startcyc+7):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
473 render_map_output(line, column, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
474 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
475
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
476 #define COLUMN_RENDER_BLOCK_REFRESH(column, startcyc) \
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
477 case startcyc:\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
478 read_map_scroll_a(column, line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
479 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
480 case (startcyc+1):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
481 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
482 case (startcyc+2):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
483 render_map_1(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
484 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
485 case (startcyc+3):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
486 render_map_2(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
487 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
488 case (startcyc+4):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
489 read_map_scroll_b(column, line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
490 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
491 case (startcyc+5):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
492 read_sprite_x(line, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
493 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
494 case (startcyc+6):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
495 render_map_3(context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
496 break;\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
497 case (startcyc+7):\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
498 render_map_output(line, column, context);\
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
499 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
500
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
501 void vdp_h40(uint32_t line, uint32_t linecyc, vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
502 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
503 uint16_t address;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
504 uint32_t mask;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
505 switch(linecyc)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
506 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
507 //sprite render to line buffer starts
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
508 case 0:
26
a7c2b92d8056 Fix management of context->sprite_draws so the sprite layer only draws when it should
Mike Pavone <pavone@retrodev.com>
parents: 25
diff changeset
509 context->cur_slot = MAX_DRAWS-1;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
510 memset(context->linebuf, 0, LINEBUF_SIZE);
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
511 render_sprite_cells(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
512 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
513 case 1:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
514 case 2:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
515 case 3:
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
516 render_sprite_cells(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
517 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
518 //sprite attribute table scan starts
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
519 case 4:
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
520 render_sprite_cells( context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
521 context->sprite_index = 0x80;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
522 context->slot_counter = MAX_SPRITES_LINE;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
523 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
524 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
525 case 5:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
526 case 6:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
527 case 7:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
528 case 8:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
529 case 9:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
530 case 10:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
531 case 11:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
532 case 12:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
533 case 13:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
534 case 14:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
535 case 15:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
536 case 16:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
537 case 17:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
538 case 18:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
539 case 19:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
540 case 20:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
541 //!HSYNC asserted
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
542 case 21:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
543 case 22:
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
544 render_sprite_cells(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
545 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
546 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
547 case 23:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
548 external_slot(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
549 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
550 case 24:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
551 case 25:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
552 case 26:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
553 case 27:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
554 case 28:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
555 case 29:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
556 case 30:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
557 case 31:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
558 case 32:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
559 case 33:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
560 case 34:
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
561 render_sprite_cells(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
562 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
563 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
564 case 35:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
565 address = (context->regs[REG_HSCROLL] & 0x3F) << 10;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
566 mask = 0;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
567 if (context->regs[REG_MODE_3] & 0x2) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
568 mask |= 0xF8;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
569 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
570 if (context->regs[REG_MODE_3] & 0x1) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
571 mask |= 0x7;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
572 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
573 line &= mask;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
574 address += line * 4;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
575 context->hscroll_a = context->vdpmem[address] << 8 | context->vdpmem[address+1];
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
576 context->hscroll_b = context->vdpmem[address+2] << 8 | context->vdpmem[address+3];
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
577 //printf("%d: HScroll A: %d, HScroll B: %d\n", line, context->hscroll_a, context->hscroll_b);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
578 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
579 case 36:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
580 //!HSYNC high
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
581 case 37:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
582 case 38:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
583 case 39:
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
584 render_sprite_cells(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
585 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
586 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
587 case 40:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
588 read_map_scroll_a(0, line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
589 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
590 case 41:
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
591 render_sprite_cells(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
592 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
593 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
594 case 42:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
595 render_map_1(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
596 scan_sprite_table(line, context);//Just a guess
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
597 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
598 case 43:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
599 render_map_2(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
600 scan_sprite_table(line, context);//Just a guess
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
601 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
602 case 44:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
603 read_map_scroll_b(0, line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
604 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
605 case 45:
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
606 render_sprite_cells(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
607 scan_sprite_table(line, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
608 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
609 case 46:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
610 render_map_3(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
611 scan_sprite_table(line, context);//Just a guess
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
612 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
613 case 47:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
614 render_map_output(line, 0, context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
615 scan_sprite_table(line, context);//Just a guess
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
616 //reverse context slot counter so it counts the number of sprite slots
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
617 //filled rather than the number of available slots
21
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
618 //context->slot_counter = MAX_SPRITES_LINE - context->slot_counter;
72ce60cb1711 Sprites somewhat less broken
Mike Pavone <pavone@retrodev.com>
parents: 20
diff changeset
619 context->cur_slot = MAX_SPRITES_LINE-1;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
620 context->sprite_draws = MAX_DRAWS;
36
04672c060062 Pass all sprite masking tests
Mike Pavone <pavone@retrodev.com>
parents: 35
diff changeset
621 context->flags &= (~FLAG_CAN_MASK & ~FLAG_MASKED);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
622 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
623 COLUMN_RENDER_BLOCK(2, 48)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
624 COLUMN_RENDER_BLOCK(4, 56)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
625 COLUMN_RENDER_BLOCK(6, 64)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
626 COLUMN_RENDER_BLOCK_REFRESH(8, 72)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
627 COLUMN_RENDER_BLOCK(10, 80)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
628 COLUMN_RENDER_BLOCK(12, 88)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
629 COLUMN_RENDER_BLOCK(14, 96)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
630 COLUMN_RENDER_BLOCK_REFRESH(16, 104)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
631 COLUMN_RENDER_BLOCK(18, 112)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
632 COLUMN_RENDER_BLOCK(20, 120)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
633 COLUMN_RENDER_BLOCK(22, 128)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
634 COLUMN_RENDER_BLOCK_REFRESH(24, 136)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
635 COLUMN_RENDER_BLOCK(26, 144)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
636 COLUMN_RENDER_BLOCK(28, 152)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
637 COLUMN_RENDER_BLOCK(30, 160)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
638 COLUMN_RENDER_BLOCK_REFRESH(32, 168)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
639 COLUMN_RENDER_BLOCK(34, 176)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
640 COLUMN_RENDER_BLOCK(36, 184)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
641 COLUMN_RENDER_BLOCK(38, 192)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
642 COLUMN_RENDER_BLOCK_REFRESH(40, 200)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
643 case 208:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
644 case 209:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
645 external_slot(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
646 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
647 default:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
648 //leftovers from HSYNC clock change nonsense
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
649 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
650 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
651 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
652
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
653 void vdp_h32(uint32_t line, uint32_t linecyc, vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
654 {
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
655 uint16_t address;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
656 uint32_t mask;
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
657 switch(linecyc)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
658 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
659 //sprite render to line buffer starts
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
660 case 0:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
661 context->cur_slot = MAX_DRAWS_H32-1;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
662 memset(context->linebuf, 0, LINEBUF_SIZE);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
663 render_sprite_cells(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
664 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
665 case 1:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
666 case 2:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
667 case 3:
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
668 render_sprite_cells(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
669 break;
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
670 //sprite attribute table scan starts
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
671 case 4:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
672 render_sprite_cells( context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
673 context->sprite_index = 0x80;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
674 context->slot_counter = MAX_SPRITES_LINE_H32;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
675 scan_sprite_table(line, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
676 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
677 case 5:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
678 case 6:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
679 case 7:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
680 case 8:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
681 case 9:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
682 case 10:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
683 case 11:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
684 case 12:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
685 case 13:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
686 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
687 scan_sprite_table(line, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
688 case 14:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
689 external_slot(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
690 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
691 case 15:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
692 case 16:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
693 case 17:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
694 case 18:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
695 case 19:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
696 //HSYNC start
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
697 case 20:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
698 case 21:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
699 case 22:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
700 case 23:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
701 case 24:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
702 case 25:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
703 case 26:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
704 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
705 scan_sprite_table(line, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
706 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
707 case 27:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
708 external_slot(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
709 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
710 case 28:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
711 address = (context->regs[REG_HSCROLL] & 0x3F) << 10;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
712 mask = 0;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
713 if (context->regs[REG_MODE_3] & 0x2) {
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
714 mask |= 0xF8;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
715 }
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
716 if (context->regs[REG_MODE_3] & 0x1) {
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
717 mask |= 0x7;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
718 }
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
719 line &= mask;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
720 address += line * 4;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
721 context->hscroll_a = context->vdpmem[address] << 8 | context->vdpmem[address+1];
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
722 context->hscroll_b = context->vdpmem[address+2] << 8 | context->vdpmem[address+3];
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
723 //printf("%d: HScroll A: %d, HScroll B: %d\n", line, context->hscroll_a, context->hscroll_b);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
724 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
725 case 29:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
726 case 30:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
727 case 31:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
728 case 32:
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
729 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
730 scan_sprite_table(line, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
731 break;
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
732 //!HSYNC high
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
733 case 33:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
734 read_map_scroll_a(0, line, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
735 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
736 case 34:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
737 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
738 scan_sprite_table(line, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
739 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
740 case 35:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
741 render_map_1(context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
742 scan_sprite_table(line, context);//Just a guess
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
743 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
744 case 36:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
745 render_map_2(context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
746 scan_sprite_table(line, context);//Just a guess
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
747 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
748 case 37:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
749 read_map_scroll_b(0, line, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
750 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
751 case 38:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
752 render_sprite_cells(context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
753 scan_sprite_table(line, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
754 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
755 case 39:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
756 render_map_3(context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
757 scan_sprite_table(line, context);//Just a guess
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
758 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
759 case 40:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
760 render_map_output(line, 0, context);
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
761 scan_sprite_table(line, context);//Just a guess
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
762 //reverse context slot counter so it counts the number of sprite slots
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
763 //filled rather than the number of available slots
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
764 //context->slot_counter = MAX_SPRITES_LINE - context->slot_counter;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
765 context->cur_slot = MAX_SPRITES_LINE_H32-1;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
766 context->sprite_draws = MAX_DRAWS_H32;
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
767 context->flags &= (~FLAG_CAN_MASK & ~FLAG_MASKED);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
768 break;
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
769 COLUMN_RENDER_BLOCK(2, 41)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
770 COLUMN_RENDER_BLOCK(4, 49)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
771 COLUMN_RENDER_BLOCK(6, 57)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
772 COLUMN_RENDER_BLOCK_REFRESH(8, 65)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
773 COLUMN_RENDER_BLOCK(10, 73)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
774 COLUMN_RENDER_BLOCK(12, 81)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
775 COLUMN_RENDER_BLOCK(14, 89)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
776 COLUMN_RENDER_BLOCK_REFRESH(16, 97)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
777 COLUMN_RENDER_BLOCK(18, 105)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
778 COLUMN_RENDER_BLOCK(20, 113)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
779 COLUMN_RENDER_BLOCK(22, 121)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
780 COLUMN_RENDER_BLOCK_REFRESH(24, 129)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
781 COLUMN_RENDER_BLOCK(26, 137)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
782 COLUMN_RENDER_BLOCK(28, 145)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
783 COLUMN_RENDER_BLOCK(30, 153)
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
784 COLUMN_RENDER_BLOCK_REFRESH(32, 161)
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
785 case 169:
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
786 case 170:
37
cd59519b26d9 Initial H32 mode support
Mike Pavone <pavone@retrodev.com>
parents: 36
diff changeset
787 external_slot(context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
788 break;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
789 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
790 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
791 void latch_mode(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
792 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
793 context->latched_mode = (context->regs[REG_MODE_4] & 0x81) | (context->regs[REG_MODE_2] & BIT_PAL);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
794 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
795
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
796 #define DISPLAY_ENABLE 0x40
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
797
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
798 int is_refresh(vdp_context * context)
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
799 {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
800 uint32_t linecyc = context->cycles % MCLKS_LINE;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
801 if (context->latched_mode & BIT_H40) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
802 linecyc = linecyc/16;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
803 return (linecyc == 73 || linecyc == 105 || linecyc == 137 || linecyc == 169 || linecyc == 201);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
804 } else {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
805 linecyc = linecyc/20;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
806 return (linecyc == 66 || linecyc == 98 || linecyc == 130 || linecyc == 162);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
807 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
808 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
809
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
810 void check_render_bg(vdp_context * context, int32_t line)
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
811 {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
812 if (line > 0) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
813 line -= 1;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
814 uint16_t * start = NULL, *end = NULL;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
815 uint32_t linecyc = (context->cycles % MCLKS_LINE);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
816 if (context->latched_mode & BIT_H40) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
817 linecyc /= 16;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
818 if (linecyc >= 55 && linecyc <= 207 && !((linecyc-55) % 8)) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
819 uint32_t x = ((linecyc-55)&(~0xF))*2;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
820 start = context->framebuf + line * 320 + x;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
821 end = start + 16;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
822 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
823 } else {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
824 linecyc /= 20;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
825 if (linecyc >= 48 && linecyc <= 168 && !((linecyc-48) % 8)) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
826 uint32_t x = ((linecyc-48)&(~0xF))*2;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
827 start = context->framebuf + line * 256 + x;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
828 end = start + 16;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
829 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
830 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
831 while (start != end) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
832 *start = context->regs[REG_BG_COLOR] & 0x3F;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
833 ++start;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
834 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
835 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
836 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
837
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
838 void vdp_run_context(vdp_context * context, uint32_t target_cycles)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
839 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
840 while(context->cycles < target_cycles)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
841 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
842 uint32_t line = context->cycles / MCLKS_LINE;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
843 uint32_t active_lines = context->latched_mode & BIT_PAL ? PAL_ACTIVE : NTSC_ACTIVE;
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
844 if (!line) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
845 latch_mode(context);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
846 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
847 if (line < active_lines && context->regs[REG_MODE_2] & DISPLAY_ENABLE) {
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
848 //first sort-of active line is treated as 255 internally
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
849 //it's used for gathering sprite info for line
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
850 line = (line - 1) & 0xFF;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
851 uint32_t linecyc = context->cycles % MCLKS_LINE;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
852
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
853 //Convert to slot number
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
854 if (context->latched_mode & BIT_H40){
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
855 //TODO: Deal with nasty clock switching during HBLANK
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
856 linecyc = linecyc/16;
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
857 vdp_h40(line, linecyc, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
858 context->cycles += 16;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
859 } else {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
860 linecyc = linecyc/20;
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
861 vdp_h32(line, linecyc, context);
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
862 context->cycles += 20;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
863 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
864 } else {
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
865 if (!is_refresh(context)) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
866 external_slot(context);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
867 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
868 if (line < active_lines) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
869 check_render_bg(context, line);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
870 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
871 if (context->latched_mode & BIT_H40){
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
872 //TODO: Deal with nasty clock switching during HBLANK
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
873 context->cycles += 16;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
874 } else {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
875 context->cycles += 20;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
876 }
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
877 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
878 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
879 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
880
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
881 uint32_t vdp_run_to_vblank(vdp_context * context)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
882 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
883 uint32_t target_cycles = ((context->latched_mode & BIT_PAL) ? PAL_ACTIVE : NTSC_ACTIVE) * MCLKS_LINE;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
884 vdp_run_context(context, target_cycles);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
885 return context->cycles;
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
886 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
887
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
888 void vdp_control_port_write(vdp_context * context, uint16_t value)
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
889 {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
890 printf("control port write: %X\n", value);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
891 if (context->flags & FLAG_PENDING) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
892 context->address = (context->address & 0x3FFF) | (value << 14);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
893 context->cd = (context->cd & 0x3) | ((value >> 2) & 0x3C);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
894 context->flags &= ~FLAG_PENDING;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
895 } else {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
896 if ((value & 0xC000) == 0x8000) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
897 //Register write
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
898 uint8_t reg = (value >> 8) & 0x1F;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
899 if (reg < VDP_REGS) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
900 printf("register %d set to %X\n", reg, value);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
901 context->regs[reg] = value;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
902 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
903 } else {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
904 context->flags |= FLAG_PENDING;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
905 context->address = (context->address &0xC000) | (value & 0x3FFF);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
906 context->cd = (context->cd &0x3C) | (value >> 14);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
907 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
908 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
909 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
910
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
911 void vdp_data_port_write(vdp_context * context, uint16_t value)
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
912 {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
913 printf("data port write: %X\n", value);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
914 context->flags &= ~FLAG_PENDING;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
915 if (context->fifo_cur == context->fifo_end) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
916 printf("FIFO full, waiting for space before next write at cycle %X\n", context->cycles);
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
917 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
918 while (context->fifo_cur == context->fifo_end) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
919 vdp_run_context(context, context->cycles + ((context->latched_mode & BIT_H40) ? 16 : 20));
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
920 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
921 context->fifo_cur->cycle = context->cycles;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
922 context->fifo_cur->value = value;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
923 context->fifo_cur->partial = 0;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
924 context->fifo_cur++;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
925 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
926
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
927 uint16_t vdp_control_port_read(vdp_context * context)
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
928 {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
929 context->flags &= ~FLAG_PENDING;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
930 uint16_t value = 0x3400;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
931 if (context->fifo_cur == (context->fifo_end - FIFO_SIZE)) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
932 value |= 0x200;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
933 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
934 if (context->fifo_cur == context->fifo_end) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
935 value |= 0x100;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
936 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
937 //TODO: Lots of other bits in status port
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
938 return value;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
939 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
940
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
941 uint16_t vdp_data_port_read(vdp_context * context)
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
942 {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
943 context->flags &= ~FLAG_PENDING;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
944 if (!(context->cd & 1)) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
945 return 0;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
946 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
947 //Not sure if the FIFO should be drained before processing a read or not, but it would make sense
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
948 context->flags &= ~FLAG_UNUSED_SLOT;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
949 while (!(context->flags & FLAG_UNUSED_SLOT)) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
950 vdp_run_context(context, context->cycles + ((context->latched_mode & BIT_H40) ? 16 : 20));
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
951 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
952 uint16_t value = 0;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
953 switch (context->cd & 0x7)
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
954 {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
955 case VRAM_READ:
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
956 value = context->vdpmem[context->address] << 8;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
957 context->flags &= ~FLAG_UNUSED_SLOT;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
958 while (!(context->flags & FLAG_UNUSED_SLOT)) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
959 vdp_run_context(context, context->cycles + ((context->latched_mode & BIT_H40) ? 16 : 20));
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
960 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
961 value |= context->vdpmem[context->address ^ 1];
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
962 break;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
963 case CRAM_READ:
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
964 value = context->cram[(context->address/2) & (CRAM_SIZE-1)];
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
965 break;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
966 case VSRAM_READ:
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
967 if (((context->address / 2) & 63) < VSRAM_SIZE) {
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
968 value = context->vsram[context->address & 63];
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
969 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
970 break;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
971 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
972 context->address += context->regs[REG_AUTOINC];
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
973 return value;
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
974 }
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
975
20
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
976 #define GST_VDP_REGS 0xFA
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
977 #define GST_VDP_MEM 0x12478
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
978
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
979 void vdp_load_savestate(vdp_context * context, FILE * state_file)
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
980 {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
981 uint8_t tmp_buf[CRAM_SIZE*2];
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
982 fseek(state_file, GST_VDP_REGS, SEEK_SET);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
983 fread(context->regs, 1, VDP_REGS, state_file);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
984 latch_mode(context);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
985 fread(tmp_buf, 1, sizeof(tmp_buf), state_file);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
986 for (int i = 0; i < CRAM_SIZE; i++) {
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
987 context->cram[i] = (tmp_buf[i*2+1] << 8) | tmp_buf[i*2];
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
988 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
989 fread(tmp_buf, 2, VSRAM_SIZE, state_file);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
990 for (int i = 0; i < VSRAM_SIZE; i++) {
23
3e924bb56560 Fix endianness of VSRAM when read from Genecyst save state
Mike Pavone <pavone@retrodev.com>
parents: 22
diff changeset
991 context->vsram[i] = (tmp_buf[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
992 }
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
993 fseek(state_file, GST_VDP_MEM, SEEK_SET);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
994 fread(context->vdpmem, 1, VRAM_SIZE, state_file);
f664eeb55cb4 Mostly broken VDP core and savestate viewer
Mike Pavone <pavone@retrodev.com>
parents:
diff changeset
995 }
54
3b79cbcf6846 Get Flavio's color bar demo kind of sort of working
Mike Pavone <pavone@retrodev.com>
parents: 43
diff changeset
996