deskthority

That's cool... I wouldn't have thought to attempt to take apart one of those chips myself, but I guess it's possible...

I feel like long-term though, since PS/2 ports are already effectively dinosaurs, the best solution for these keyboards is going to be to come up with a PS2-to-USB adapter that ...

Thanks, that's some more good info... aside from @hellothere's ROM dumps (which I think are for Gen1 or Gen2 models?), there are some here too, which you may already know about:

http://bitsavers.org/pdf/northgate/omnikey/firmware/

At some point I'll see if I can set up an 8051 SDK and try to ...

That's very interesting info...

engr - when you took the chips from the Prime/Stellar and tried putting them into the Northgate-branded keyboards, do you mean the 40-pin controller chip or the 8-pin memory chip, or both?

When you did that, did the Northgate keyboards work normally except for not ...

Ok, after reading up on a bunch more of your (Polecat's) posts on these keyboards, I've learned a lot more and I think your assessment is correct.

My Ultra is a Gen2b, has a discrete ROM chip as I mentioned, and no SPI/flash chip, so it's not programmable.

I have a 102 which is a Gen3, with no ...

The software from the link in your last post is spot-on for Avant keyboards (Stellar, Prime). But, I never got the Avant software to work on any Omnikey keyboards.

This year I worked on a project to get some software running on newer Windows versions to program the Avant keyboards, and I got it ...