Couple of interesting things about the 128.

It follows the same pattern as the Matrox engine, where batches return while drawing and the core drains at Lock, Flip, Blt, DestroySurface, and CPU clears.

The 128 register guide confirms CRTC_OFFSET is double-buffered via vblank latching, with bit 30 serving as a hardware flip-pending flag similar to Haswell’s.

I've got 2 systems - one with an XGI Volari Z9 and one with a silicon image SM750.

Both of these chips don't support 3D acceleration even with their official drivers, but I wonder, if I sent you the V9XSURV output of these chips do you think 3D acceleration could be worked in?

Duffman wrote on 21 minutes ago:

I've got 2 systems - one with an XGI Volari Z9 and one with a silicon image SM750.

Both of these chips don't support 3D acceleration even with their official drivers, but I wonder, if I sent you the V9XSURV output of these chips do you think 3D acceleration could be worked in?

Oh wow would love to work on those, survey will not be enough, I will need your machine on internet and you to install https://github.com/michaeldale/V9x-Remote-Agent and enable Remote Help from the tray icon, then I can drive the machine remotely and run scripts/tests on it.

Duffman wrote on 21 minutes ago:

I've got 2 systems - one with an XGI Volari Z9 and one with a silicon image SM750.

Both of these chips don't support 3D acceleration even with their official drivers, but I wonder, if I sent you the V9XSURV output of these chips do you think 3D acceleration could be worked in?

ChatGPT thinks it is very unlikely they have any hardware 3D but I'd be happy to try.