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Mach64: fix wrong refresh rates based on the character width to be calculated for the crtc timer.

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svga->char_width should be 8 when Mach64 extended modes are enabled.
This commit is contained in:
TC1995
2025-12-11 21:10:34 +01:00
parent 3e3e924142
commit a37b813db2
1 changed files with 8 additions and 7 deletions
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15
src/video/vid_ati_mach64.c
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@@ -563,6 +563,7 @@ mach64_recalctimings(svga_t *svga)
const mach64_t *mach64 = (mach64_t *) svga->priv;
if (((mach64->crtc_gen_cntl >> 24) & 3) == 3) {
svga->char_width = 8;
svga->vtotal = (mach64->crtc_v_total_disp & 2047) + 1;
svga->dispend = ((mach64->crtc_v_total_disp >> 16) & 2047) + 1;
svga->htotal = (mach64->crtc_h_total_disp & 255) + 1;
@@ -826,7 +827,7 @@ mach64_recalc_dp_set_engine(mach64_t *mach64)
mach64->src_off_pitch = 0;
if (mach64->dp_set_gui_engine & (1 << 15))
mach64->src_off_pitch = mach64->dst_off_pitch;
switch ((mach64->dp_set_gui_engine >> 16) & 3)
{
case 0:
@@ -983,7 +984,7 @@ start_blit_op:
mach64_blit(0, -1, mach64);
}
break;
case 0x2ec:
case 0x2ed:
case 0x2ee:
@@ -2782,7 +2783,7 @@ mach64_ext_readb(uint32_t addr, void *priv)
case 0x23:
READ8(addr, mach64->dsp_config);
break;
case 0x24:
case 0x25:
case 0x26:
@@ -2875,7 +2876,7 @@ mach64_ext_readb(uint32_t addr, void *priv)
READ8(addr, mach64->gp_io);
}
// pclog("GPIO READ 0x%X, 0x00\n", addr & 0x3ff);
break;
case 0x80:
case 0x81:
@@ -3015,7 +3016,7 @@ mach64_ext_readb(uint32_t addr, void *priv)
mach64_wait_fifo_idle(mach64);
READ8(addr ^ 2, mach64->dst_height_width);
break;
case 0x110:
case 0x111:
addr += 2;
@@ -3331,7 +3332,7 @@ mach64_ext_readb(uint32_t addr, void *priv)
ret = FIFO_EMPTY ? 0 : 1;
break;
case 0x33a:
ret = FIFO_EMPTY ? 32 : 31;
break;
@@ -3721,7 +3722,7 @@ mach64_ext_writeb(uint32_t addr, uint8_t val, void *priv)
svga->hwcursor.yoff = (mach64->cur_horz_vert_off >> 16) & 0x3f;
}
break;
case 0x78:
case 0x79:
case 0x7A: