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Fixed the hardware cursor on divided-by-two clock modes.

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This commit is contained in:
OBattler
2021-01-29 23:36:16 +01:00
parent 904c7d9116
commit fb015c3f76
1 changed files with 14 additions and 7 deletions
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21
src/video/vid_ht216.c
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@@ -43,6 +43,7 @@ typedef struct ht216_t
rom_t bios_rom;
uint32_t vram_mask;
uint8_t adjust_cursor;
int ext_reg_enable;
int clk_sel;
@@ -163,8 +164,6 @@ ht216_out(uint16_t addr, uint8_t val, void *p)
break;
case 0x9c: case 0x9d:
svga->hwcursor.x = ht216->ht_regs[0x9d] | ((ht216->ht_regs[0x9c] & 7) << 8);
if (ht216->ht_regs[0xff] & 0x10)
svga->hwcursor.x >>= 1;
break;
case 0x9e: case 0x9f:
svga->hwcursor.y = ht216->ht_regs[0x9f] | ((ht216->ht_regs[0x9e] & 3) << 8);
@@ -504,9 +503,12 @@ ht216_recalctimings(svga_t *svga)
else
high_res_256 = (svga->htotal * 8) > (svga->vtotal * 2);
ht216->adjust_cursor = 0;
if ((svga->bpp == 8) && (!svga->lowres || high_res_256)) {
if (high_res_256)
if (high_res_256) {
svga->hdisp /= 2;
ht216->adjust_cursor = 1;
}
svga->render = svga_render_8bpp_highres;
}
}
@@ -515,9 +517,14 @@ ht216_recalctimings(svga_t *svga)
static void
ht216_hwcursor_draw(svga_t *svga, int displine)
{
int x;
ht216_t *ht216 = (ht216_t *)svga->p;
int x, shift = (ht216->adjust_cursor ? 2 : 1);
uint32_t dat[2];
int offset = svga->hwcursor_latch.x + svga->hwcursor_latch.xoff;
int width = (ht216->adjust_cursor ? 16 : 32);
if (ht216->adjust_cursor)
offset >>= 1;
if (svga->interlace && svga->hwcursor_oddeven)
svga->hwcursor_latch.addr += 4;
@@ -531,14 +538,14 @@ ht216_hwcursor_draw(svga_t *svga, int displine)
(svga->vram[svga->hwcursor_latch.addr+128+2] << 8) |
svga->vram[svga->hwcursor_latch.addr+128+3];
for (x = 0; x < 32; x++) {
for (x = 0; x < width; x++) {
if (!(dat[0] & 0x80000000))
((uint32_t *)buffer32->line[displine])[svga->x_add + offset + x] = 0;
if (dat[1] & 0x80000000)
((uint32_t *)buffer32->line[displine])[svga->x_add + offset + x] ^= 0xffffff;
dat[0] <<= 1;
dat[1] <<= 1;
dat[0] <<= shift;
dat[1] <<= shift;
}
svga->hwcursor_latch.addr += 4;