I believe I have resolved the problem with the Voodoo1 with Win95c and NT4.
Win95c needs to have either Voodoo1 driver 2.16 or 3.00.01 installed, but not 3.01.00. Not on this motherboard anyway. The newer version was fine on the 486 board. Also, trying to revert to a lower version number of the driver was not straight forward. Windows95 didn't want to do it because it had a newer driver date. There is no uninstaller. So you need to hunt down all the glide, 3dfx, and directx driver for Voodoo and manually delete them. You also must manually delete the Voodoo Graphics entry in your Device Manager. When Windows 95 reboots, it will insist for those deleted files. At this time, it will not accept lower version files. You must hit cancel and wait for Windows 95 to boot up, then you can "update driver" for the Voodoo entry in the Device Manager.
The same is true for NT4. Voodoo1 driver version 2.46 and 3.00.01 work just fine, but not 3.01.00. Although 3.01.00 worked on the 486.
I also needed to find the proper Dell 3D Nitro version of my VirgeGX for the NT4 resolution sit at 1280x1024x16bit at 60Hz. The NT and S3 provided drivers would only go up to 1024x768x16bit. NT4: https://www.dell.com/support/home/ca/en/cabsd … driverid=r18832 , Win95: https://www.dell.com/support/home/ca/en/cabsd … driverid=r18831
This is probably case closed now, but I still need to try it on my Acer V12P motherboard, which is the one in the Acer case to be built.
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