As promised, here's results from Beta 11 in all three configurations: RAGE PCI card as primary (and the desktop spanned across both GPUs), Voodoo3 AGP as primary, and Voodoo3 on its own. It seems to be picking up the correct data from both when they're set to primary now, but it still clocks the Voodoo3 at "0MHz" when it's the secondary card. BTW I also confirmed the 125MHz V3 clock with HWInfo and in 3DFX's own properties utility.
(One thing that's bugging me a little is the reporting of ATI cards as AMD cards - this wasn't the case until ~2006 when the buyout occurred, and the branding didn't even change until the HD6xxx series around 2010 AFAIK. It's not a big deal, but "AMD Rage" just looks wrong. 😉 I imagine the device ID code is already full of if...then case statements, but if you want to change that, it'd be a little more accurate.)
SIV Beta 11 - Rage as Primary.png
^^ Rage as Primary GPU - reporting 3DFX @ 0MHz
SIV Beta 11 - 3DFX Primary.png
^^ 3DFX as Primary - both cards report correct(?) clocks
SIV Beta 11 - 3DFX Only.png
SIV Beta 11 results.7z
I'll see if I can get this thing to boot the mini-XP image from Hiren's if it helps more. I don't want to change the main installed OS right now though.
twitch.tv/oldskooljay - playing the obscure, forgotten & weird - most Tuesdays & Thursdays @ 6:30 PM PDT. Bonus streams elsewhen!