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-rw-r--r--vdp.c355
-rw-r--r--vdp.h2
2 files changed, 73 insertions, 284 deletions
diff --git a/vdp.c b/vdp.c
index 36e0db2..fc7f6ba 100644
--- a/vdp.c
+++ b/vdp.c
@@ -523,352 +523,139 @@ void vdp_h40(uint32_t line, uint32_t linecyc, vdp_context * context)
void vdp_h32(uint32_t line, uint32_t linecyc, vdp_context * context)
{
+ uint16_t address;
+ uint32_t mask;
switch(linecyc)
{
//sprite render to line buffer starts
case 0:
+ context->cur_slot = MAX_DRAWS_H32-1;
+ memset(context->linebuf, 0, LINEBUF_SIZE);
+ render_sprite_cells(context);
break;
case 1:
- break;
case 2:
- break;
case 3:
+ render_sprite_cells(context);
break;
+ //sprite attribute table scan starts
case 4:
+ render_sprite_cells( context);
+ context->sprite_index = 0x80;
+ context->slot_counter = MAX_SPRITES_LINE_H32;
+ scan_sprite_table(line, context);
break;
case 5:
- break;
case 6:
- break;
case 7:
- break;
case 8:
- break;
case 9:
- break;
case 10:
- break;
case 11:
- break;
case 12:
- break;
case 13:
- break;
+ render_sprite_cells(context);
+ scan_sprite_table(line, context);
case 14:
+ external_slot(context);
break;
case 15:
- break;
case 16:
- break;
case 17:
- break;
case 18:
- break;
case 19:
- break;
+ //HSYNC start
case 20:
- break;
case 21:
- break;
case 22:
- break;
case 23:
- break;
case 24:
- break;
case 25:
- break;
case 26:
+ render_sprite_cells(context);
+ scan_sprite_table(line, context);
break;
case 27:
+ external_slot(context);
break;
case 28:
+ address = (context->regs[REG_HSCROLL] & 0x3F) << 10;
+ mask = 0;
+ if (context->regs[REG_MODE_3] & 0x2) {
+ mask |= 0xF8;
+ }
+ if (context->regs[REG_MODE_3] & 0x1) {
+ mask |= 0x7;
+ }
+ line &= mask;
+ address += line * 4;
+ context->hscroll_a = context->vdpmem[address] << 8 | context->vdpmem[address+1];
+ context->hscroll_b = context->vdpmem[address+2] << 8 | context->vdpmem[address+3];
+ //printf("%d: HScroll A: %d, HScroll B: %d\n", line, context->hscroll_a, context->hscroll_b);
break;
case 29:
- break;
case 30:
- break;
case 31:
- break;
case 32:
+ render_sprite_cells(context);
+ scan_sprite_table(line, context);
break;
+ //!HSYNC high
case 33:
+ read_map_scroll_a(0, line, context);
break;
case 34:
+ render_sprite_cells(context);
+ scan_sprite_table(line, context);
break;
case 35:
+ render_map_1(context);
+ scan_sprite_table(line, context);//Just a guess
break;
case 36:
+ render_map_2(context);
+ scan_sprite_table(line, context);//Just a guess
break;
case 37:
+ read_map_scroll_b(0, line, context);
break;
case 38:
+ render_sprite_cells(context);
+ scan_sprite_table(line, context);
break;
case 39:
+ render_map_3(context);
+ scan_sprite_table(line, context);//Just a guess
break;
case 40:
+ render_map_output(line, 0, context);
+ scan_sprite_table(line, context);//Just a guess
+ //reverse context slot counter so it counts the number of sprite slots
+ //filled rather than the number of available slots
+ //context->slot_counter = MAX_SPRITES_LINE - context->slot_counter;
+ context->cur_slot = MAX_SPRITES_LINE_H32-1;
+ context->sprite_draws = MAX_DRAWS_H32;
+ context->flags &= (~FLAG_CAN_MASK & ~FLAG_MASKED);
break;
- case 41:
- break;
- case 42:
- break;
- case 43:
- break;
- case 44:
- break;
- case 45:
- break;
- case 46:
- break;
- case 47:
- break;
- case 48:
- break;
- case 49:
- break;
- case 50:
- break;
- case 51:
- break;
- case 52:
- break;
- case 53:
- break;
- case 54:
- break;
- case 55:
- break;
- case 56:
- break;
- case 57:
- break;
- case 58:
- break;
- case 59:
- break;
- case 60:
- break;
- case 61:
- break;
- case 62:
- break;
- case 63:
- break;
- case 64:
- break;
- case 65:
- break;
- case 66:
- break;
- case 67:
- break;
- case 68:
- break;
- case 69:
- break;
- case 70:
- break;
- case 71:
- break;
- case 72:
- break;
- case 73:
- break;
- case 74:
- break;
- case 75:
- break;
- case 76:
- break;
- case 77:
- break;
- case 78:
- break;
- case 79:
- break;
- case 80:
- break;
- case 81:
- break;
- case 82:
- break;
- case 83:
- break;
- case 84:
- break;
- case 85:
- break;
- case 86:
- break;
- case 87:
- break;
- case 88:
- break;
- case 89:
- break;
- case 90:
- break;
- case 91:
- break;
- case 92:
- break;
- case 93:
- break;
- case 94:
- break;
- case 95:
- break;
- case 96:
- break;
- case 97:
- break;
- case 98:
- break;
- case 99:
- break;
- case 100:
- break;
- case 101:
- break;
- case 102:
- break;
- case 103:
- break;
- case 104:
- break;
- case 105:
- break;
- case 106:
- break;
- case 107:
- break;
- case 108:
- break;
- case 109:
- break;
- case 110:
- break;
- case 111:
- break;
- case 112:
- break;
- case 113:
- break;
- case 114:
- break;
- case 115:
- break;
- case 116:
- break;
- case 117:
- break;
- case 118:
- break;
- case 119:
- break;
- case 120:
- break;
- case 121:
- break;
- case 122:
- break;
- case 123:
- break;
- case 124:
- break;
- case 125:
- break;
- case 126:
- break;
- case 127:
- break;
- case 128:
- break;
- case 129:
- break;
- case 130:
- break;
- case 131:
- break;
- case 132:
- break;
- case 133:
- break;
- case 134:
- break;
- case 135:
- break;
- case 136:
- break;
- case 137:
- break;
- case 138:
- break;
- case 139:
- break;
- case 140:
- break;
- case 141:
- break;
- case 142:
- break;
- case 143:
- break;
- case 144:
- break;
- case 145:
- break;
- case 146:
- break;
- case 147:
- break;
- case 148:
- break;
- case 149:
- break;
- case 150:
- break;
- case 151:
- break;
- case 152:
- break;
- case 153:
- break;
- case 154:
- break;
- case 155:
- break;
- case 156:
- break;
- case 157:
- break;
- case 158:
- break;
- case 159:
- break;
- case 160:
- break;
- case 161:
- break;
- case 162:
- break;
- case 163:
- break;
- case 164:
- break;
- case 165:
- break;
- case 166:
- break;
- case 167:
- break;
- case 168:
- break;
+ COLUMN_RENDER_BLOCK(2, 41)
+ COLUMN_RENDER_BLOCK(4, 49)
+ COLUMN_RENDER_BLOCK(6, 57)
+ COLUMN_RENDER_BLOCK_REFRESH(8, 65)
+ COLUMN_RENDER_BLOCK(10, 73)
+ COLUMN_RENDER_BLOCK(12, 81)
+ COLUMN_RENDER_BLOCK(14, 89)
+ COLUMN_RENDER_BLOCK_REFRESH(16, 97)
+ COLUMN_RENDER_BLOCK(18, 105)
+ COLUMN_RENDER_BLOCK(20, 113)
+ COLUMN_RENDER_BLOCK(22, 121)
+ COLUMN_RENDER_BLOCK_REFRESH(24, 129)
+ COLUMN_RENDER_BLOCK(26, 137)
+ COLUMN_RENDER_BLOCK(28, 145)
+ COLUMN_RENDER_BLOCK(30, 153)
+ COLUMN_RENDER_BLOCK_REFRESH(32, 161)
case 169:
- break;
case 170:
- break;
- case 171:
+ external_slot(context);
break;
}
}
diff --git a/vdp.h b/vdp.h
index 090809a..9ff787c 100644
--- a/vdp.h
+++ b/vdp.h
@@ -12,7 +12,9 @@
#define FRAMEBUF_ENTRIES 320*224
#define FRAMEBUF_SIZE (FRAMEBUF_ENTRIES*sizeof(uint16_t))
#define MAX_DRAWS 40
+#define MAX_DRAWS_H32 32
#define MAX_SPRITES_LINE 20
+#define MAX_SPRITES_LINE_H32 16
enum {
REG_MODE_1=0,
generated by cgit v1.2.3 (git 2.25.1) at 2025-06-19 17:31:13 +0000