I have a Radius PrecisionColor Pro 24XP NuBus video card. It won't do any resolution bigger than 832x624 at any color depth, even though it can do 832x624 @ 24BPP.

I suspected that this limitation was just cooked into the ROM, and swapping in the ROM from one of the other cards would allow larger resolutions (at reduced color depths). My interest is in 1024x768, as that's the native resolution of the tiny, sharp little LCD I want to use with my IIci.

JT confirmed that he had tried this swap:

I swapped in my PrecisionColor 24X ROM and it came up at 1024 x 768 @ 24 bit the first time I tried it, but I didn't take a screen shot.
Tried it in 1152 x 8XX and it wigged out when I tried it at 24 bit. It'll only do 4bit color or grayscale at 21" resolution.

No it wigs out when I try over that level for 19" and I can't figure out why.

Click to expand...

Anybody around with the tools and supplies to burn flash ROMs? It's socketted on the card, so it should just be a matter of reading in a source ROM and writing a copy onto a blank one.