GrandVimage Nubus Graphiccard Video problems ...

[franklyn]

If I desolder the flash chip to read it and then reprogram it, I need either an adapter board to which I can solder the flash or a chip adapter. I could then populate the 32-pin DIL socket and use a flash chip in the DIL instead of the TSOP.

 

[olePigeon]

I built my own video adapter with separate sync and IDs set on a 21-inch multisync monitor. That was the problem. I'm now using a purchased adapter with the sync-on-green setting, and everything's fine now.

I figured it was something like that. I have a combination of passive adapters and ones with varying amounts of dip switches. I should probably replace them all with one of these at some point: https://www.bigmessowires.com/mac-sync-inator/

 

[obsolete]

If I desolder the flash chip to read it and then reprogram it, I need either an adapter board to which I can solder the flash or a chip adapter. I could then populate the 32-pin DIL socket and use a flash chip in the DIL instead of the TSOP.

What's stopping you from soldering pin headers to the board and doing it that way? Seems like Interware already included the adapter for you.