Retro/pcem
Watch
1
0
Fork
You've already forked pcem
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Correct Voodoo hvRetrace register. Fixes intermittent hangs on Voodoo mode setting.

Browse source
This commit is contained in:
SarahW 2019-02-04 21:32:25 +00:00
commit b105445a52
1 changed files with 13 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

15
src/vid_voodoo.c
View file

@ -6127,8 +6127,19 @@ static uint32_t voodoo_readl(uint32_t addr, void *p)
temp = voodoo->line & 0x1fff;
break;
case SST_hvRetrace:
temp = voodoo->line & 0x1fff;
temp |= ((((tsc - timer_get_ts_int(&voodoo->timer)) * voodoo->h_total) / (voodoo->line_time >> 32)) << 16) & 0x7ff0000;
{
uint32_t line_time = (uint32_t)(voodoo->line_time >> 32);
uint32_t diff = (timer_get_ts_int(&voodoo->timer) > (tsc & 0xffffffff)) ? (timer_get_ts_int(&voodoo->timer) - (tsc & 0xffffffff)) : 0;
uint32_t pre_div = diff * voodoo->h_total;
uint32_t post_div = pre_div / line_time;
uint32_t h_pos = (voodoo->h_total - 1) - post_div;
if (h_pos >= voodoo->h_total)
h_pos = 0;
temp = voodoo->line & 0x1fff;
temp |= (h_pos << 16);
}
break;
case SST_fbiInit5: