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Applied the PCem Phoenix S3 Trio64 1 MB VRAM fix.

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This commit is contained in:
OBattler
2017-11-28 23:33:13 +01:00
parent c790730f2c
commit cac60e6087
1 changed files with 6 additions and 0 deletions
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6
src/video/vid_s3.c
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@@ -2200,6 +2200,8 @@ static void *s3_init(device_t *info, wchar_t *bios_fn, int chip)
break;
case 1: /*1MB*/
/*VRAM in first MB, mirrored in 2nd MB, 3rd and 4th MBs are open bus*/
/*This works with the #9 9FX BIOS, and matches how my real Trio64 behaves,
but does not work with the Phoenix EDO BIOS. Possibly an FPM/EDO difference?*/
svga->vram_mask = (1 << 20) - 1;
svga->vram_max = 2 << 20;
break;
@@ -2330,12 +2332,16 @@ static void *s3_9fx_init(device_t *info)
static void *s3_phoenix_trio64_init(device_t *info)
{
s3_t *s3 = s3_trio64_init(info, L"roms/video/s3/86c764x1.bin");
if (device_get_config_int("memory") == 1)
s3->svga.vram_max = 1 << 20; /*Phoenix BIOS does not expect VRAM to be mirrored*/
return s3;
}
static void *s3_diamond_stealth64_init(device_t *info)
{
s3_t *s3 = s3_trio64_init(info, L"roms/video/s3/stealt64.bin");
if (device_get_config_int("memory") == 1)
s3->svga.vram_max = 1 << 20; /*Phoenix BIOS does not expect VRAM to be mirrored*/
return s3;
}