How much memory does the video card have? If it has 1MB of memory, than that's most likely the reason why you're facing these resolution restrictions (24-bit at 640x480 only, and up to 256 colors on 1024x768).

If it's the video memory holding you back, drivers won't really help you. Some S3 video cards have sockets for extra memory chips, maybe you can upgrade the video memory that way?

I saw that on the card but I can't find any memory chips on ebay.

Even with 1 MB you should be able to get 1280x1024x4 bpp, 1152x864x8 bpp, 800x600x16 bpp

eric1992 wrote:

Also how do I use two graphics cards in a system (PCI card and AGP card) when both are inside the motherboard?
I will be buying an AGP card in the very near future.

The primary VGA device can be set in CMOS Setup (BIOS), I believe (ISA/PCI or AGP).
At least that's what I remember from Pentium II/III era hardware. Not sure if there's another method, too.
(Such as changing the order of the expansions cards in the slots, using DOS utilties, etc.)

debs3759 wrote:

Even with 1 MB you should be able to get 1280x1024x4 bpp, 1152x864x8 bpp, 800x600x16 bpp

That's not what he was asking for...

1 MB = 1048576 B

640x480x24b = 640*480*3B = 921600, fits.
800x600x24b = 800*600*3B = 1440000, does not fit.
800x600x16b = 800*600*2B = 960000, fits.
1024x768x16b = 1024*768*2B = 1572864, does not fit.
1024x768x8b = 1024*768*1B = 786432, fits.

So your card has most likely only 1 MB of VRAM, hence the limitation.
For 1024x768 in 24bit color you'd need more than 2 MB (that is, 4 MB in practice).

Nit-picking: it's an S3 Trio, not a 968 or Virge/VX, so it'll have DRAM, not VRAM.

eric1992 wrote:

Is there a driver that allows higher resolutions? I was going to use this card for DOS games, and have an AGP card for Windows. Also, how do I use two graphics cards in a system (PCI card and AGP card) when both are inside the motherboard? I will be buying an AGP card in the very near future.

You will want to set PCI card as primary in motherboard setup and then pray that Windows applications will let you pick preferred adapter or smartly choose the more modern one.

dionb wrote:

Nit-picking: it's an S3 Trio, not a 968 or Virge/VX, so it'll have DRAM, not VRAM.

Nit-picking 2: Coloqially VRAM is used as an abbreviation for video ram.

Putas wrote:

dionb wrote:

Nit-picking: it's an S3 Trio, not a 968 or Virge/VX, so it'll have DRAM, not VRAM.

Nit-picking 2: Coloqially VRAM is used as an abbreviation for video ram.

Nit-picking 3: Formally VRAM is the officially abbreviation for video ram, the memory used on 964, 968 and Virge/VX 😉