Only datasheets ever released i found for nvidia are for Riva128 and 128ZX. And they were released by SGS Thompson, not directly by nvidia. Still better than ATI - they never released anything at all. If you want riva datasheets, then check mine site. Think everything never than riva is secret stuff 😢

http://82.114.193.227/vga2/index.php?option=c … vidia&Itemid=27

http://82.114.193.227/vga2/index.php?option=c … vidia&Itemid=27

If you want to know A LOT about ATI hardware, look here. They released docs for X.org driver development.
http://www.x.org/docs/AMD/

It appears that hardware from before DX9 has been left behind though.

lucky7456969 wrote:

Thanks. I want to build Geforce4 MX440 emulator because of nostalgia.

Well, thats also a reason I guess... just wanted to wish you good luck!

...and a question - what exactly (or how exactly) do you want to emulate? I guess you know that you could make your job easier by just disabling DX 8+ support on any modern card, but I suppose thats not your goal?

These Riva128 datasheets are mostly only useful for board developers.

I think the original poster has no idea what he wants
there is zero reason to build a gf4mx emulator.it has no unique features there are no games that require one, no games that look better on one. nostalgia ? having an emulator isnt the same as having a card, wants to play old games he can do that on his current card
building a full on emulator is going to take him several years, can this guy even program
building a wrapper is pointless current dx versions support dx7

Davros wrote:

building a wrapper is pointless current dx versions support dx7

The drivers emulate dx7 using dx9 and/or dx10, and can sometimes get it wrong.

But then, writing an emulator that would get it less wrong would probably take a few years.