So then I looked at the RAMDAC thinking that might tell me if that limits it to 256 color, making the question of the controller chip moot. That has triple 6 bit DACs so it's clearly capable, and the question still remains. Every VGA RAMDAC has three 6-bit DACs, therefore 2^18 colors - but not …

pentiumspeed wrote on 2022-02-16, 17:27: wd90C30 and 31 supports 1MB and also enables full bandwidth. Looks like you need to hunt down 512K module to bring up to 1MB. Cheers, Don't think that'll be possible. There's no way to add VRAM to this board.

I have a Prolinea 3/25 that has a WD90C31 video chip and am wondering if it can display more than 256 colors at lower resolutions. Since it has 512KB RAM, I know anything beyond 256 colors at 640x480 is an impossibility. But I'm trying to determine if maybe 320x200 can do more colors on the screen. …

Sorry this is an old post, but I had to point out something interesting. I recently acquired a Prolinea 3/25 that was listed as "not working" and stated perhaps it was the power supply. Nope, the same capacitor was blown as in your photos. Powered right up when I removed the cap. Based on what was …