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Ported the most important patches from PCem.

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This commit is contained in:
TC1995
2020-12-01 21:06:01 +01:00
parent c5f4cda6db
commit 462ff300da
3 changed files with 59 additions and 11 deletions
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41
src/video/vid_voodoo_banshee.c
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@@ -2357,11 +2357,11 @@ static uint8_t banshee_pci_read(int func, int addr, void *p)
case 0x1a: ret = 0x00; break;
case 0x1b: ret = 0x00; break;
/*Undocumented, but Voodoo 3 BIOS checks this*/
case 0x2c: ret = 0x1a; break;
case 0x2d: ret = 0x12; break;
case 0x2e: ret = (banshee->type == TYPE_V3_3000) ? 0x3a : 0x30; break;
case 0x2f: ret = 0x00; break;
/*Subsystem vendor ID*/
case 0x2c: ret = banshee->pci_regs[0x2c]; break;
case 0x2d: ret = banshee->pci_regs[0x2d]; break;
case 0x2e: ret = banshee->pci_regs[0x2e]; break;
case 0x2f: ret = banshee->pci_regs[0x2f]; break;
case 0x30: ret = banshee->pci_regs[0x30] & 0x01; break; /*BIOS ROM address*/
case 0x31: ret = 0x00; break;
@@ -2667,6 +2667,37 @@ static void *banshee_init_common(const device_t *info, wchar_t *fn, int has_sgra
banshee->i2c_ddc = i2c_gpio_init("ddc_voodoo_banshee");
banshee->ddc = ddc_init(i2c_gpio_get_bus(banshee->i2c_ddc));
switch (type)
{
case TYPE_BANSHEE:
if (has_sgram) {
banshee->pci_regs[0x2c] = 0x1a;
banshee->pci_regs[0x2d] = 0x12;
banshee->pci_regs[0x2e] = 0x04;
banshee->pci_regs[0x2f] = 0x00;
} else {
banshee->pci_regs[0x2c] = 0x02;
banshee->pci_regs[0x2d] = 0x11;
banshee->pci_regs[0x2e] = 0x17;
banshee->pci_regs[0x2f] = 0x10;
}
break;
case TYPE_V3_2000:
banshee->pci_regs[0x2c] = 0x1a;
banshee->pci_regs[0x2d] = 0x12;
banshee->pci_regs[0x2e] = 0x30;
banshee->pci_regs[0x2f] = 0x00;
break;
case TYPE_V3_3000:
banshee->pci_regs[0x2c] = 0x1a;
banshee->pci_regs[0x2d] = 0x12;
banshee->pci_regs[0x2e] = 0x3a;
banshee->pci_regs[0x2f] = 0x00;
break;
}
video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_banshee);
return banshee;