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Mach64 now disables VGA data processing on LFB writes. Windows 9x DOS boxes now rendered correctly.

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This commit is contained in:
TomW 2013-12-15 14:29:52 +00:00
commit 74793aaf99
3 changed files with 11 additions and 5 deletions
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6
src/vid_ati_mach64.c
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@ -630,7 +630,7 @@ void mach64_blit(uint32_t cpu_dat, int count, mach64_t *mach64)
int mix;
int dst_x = mach64->accel.dst_x + mach64->accel.dst_x_start;
int dst_y = mach64->accel.dst_y + mach64->accel.dst_y_start;
if (mach64->accel.source_host)
{
host_dat = cpu_dat;
@ -1291,6 +1291,10 @@ void mach64_ext_writeb(uint32_t addr, uint8_t val, void *p)
case 0x1c: case 0x1d: case 0x1e: case 0x1f:
WRITE8(addr, mach64->crtc_gen_cntl, val);
if (((mach64->crtc_gen_cntl >> 24) & 3) == 3)
svga->fb_only = 1;
else
svga->fb_only = 0;
svga_recalctimings(&mach64->svga);
break;