Recently got a voodoo 1 up and running on my pentium 133.

So the scenario plays out like this. I fire up Descent 2, a 3dfx compatible game, the voodoo card *CLICKS*, my monitor turns off and on w/ the 3dfx logo popping up and Descent 2 running nicely. Play the game for a bit, exit out, decide to run DOOM because it's DOOM and I have to play it. This is where things get weird. For whatever reason, after playing a 3DFX compatible game like Descent 2, then trying to fire up DOOM 1, the card *CLICKS* again and decides DOOM needs to utilize the voodoo card (I guess?) and instead of my ATI Mach64 running the game, I get a black screen with sound.

Not a huge issue, I can restart the system and run DOOM first thing and get the proper result but if I try to run a 3DFX game prior to DOOM, the black screen is my result. I probably should test DOOM 2 and some other DOS games to see if its some kind of weird DOS issue or something but I don't really have much clue why this issue occurs.

Anyone have any ideas or suggestions?