No desktop icons appear unfortunately. I don't see a generic S3 764 driver here in Windows, but I do have a driver called just "S3", which is the first driver in the list under the "S3" manufacturer list, so I'll give this a go and see what happens, otherwise I'll install Windows 95 again and not update DirectX as I cannot uninstall it.

Hmm... must have changed the names at some point. From the list, the closest would be S3 Trio32/64 PCI. Whether or not that would require it to be an actual PCI card, I don't know at this stage. The generic S3 card may also work, but I don't know just how much of the acceleration features it would use.

EDIT: One more thing that I completely forgot about, was that the graphics acceleration level was set to low. Setting it to full now presents further issues (text and mouse pointer), so try setting it lower.

No worries, I'll try setting the graphics acceleration to low as well as the Trio 32/64 PCI drivers, I do recall seeing those drivers in the list. I've got Windows version 4.00.950 (first release) so you may be right in that their driver names have changed in later versions. I think I have OSR2 somewhere, so I could try that as well.

I've fixed text rendering in full acceleration (will commit it soon), but still need to figure out how it renders the mouse pointer. You can use one step below full to get around it, but I fear it could be done via interrupts.

I'd be kind of impressed if it used raster IRQs for the pointer given the pretty high interrupt latency possible in Win9x. More likely there's a dedicated single sprite though, based on other SVGA h/w of that era.

For what it's worth, I owned an S3 back in the day with Windows 98 and a Pentium 233 - I remember it being a horror. I had to run acceleration at about half in order to get no graphic issues. If I ran it high, lot of corruption and mouse pointer corrupted as well.. taunting me. It made emulation no fun in windows because performance sucked so much.

Ah, haven't looked much at the extra VGA registers. Port 0x3d4, index 0x45 to 0x4f handle the hardware graphics cursor.

That makes me feel a lot better

Any interest in a Tseng Labs ET4000/W32P & ET6000 video bios?