Thx for the help guys. But one thing I did originally try the dos card in a quadra/centris 650 i have laying around. The story is my 1st 6100 ppc i was given the board died, but before it did the orig owner had 7.5 installed on it, so i upg that to 8.1 as i have that. But then when i was 1st reading about the dos card, i installed the latest pc prg for it, i think version 2.something, its been awhile. Anyway it worked somewhat but i couldnt switch to the dos side, so when i went to try again the 6100 no boot or chime. So i put it in the above mentioned sys which had 8.1, 32 mb sys ram, so on, and kept getting a bus error on boot up, unless i booted the mach. with extensions off, so i even removed and used the older 1.x version and still never got it to work. I can see about the heat issue and would like to get this card to wrk in the 650 vs. the 6100. What exactly is a bus error? I'm a pc person, so my understanding is if i use the latest pc driver for that card 2.x and under os 8.1 in a nubus slot on that mac, with the spider cable connected properly it should work right? Finally, yes i have the pg bk marked somewhere where it shows howto put this card in another 68k mac other than the 6100, i just thought that mb the extension has a prob w/68k cpus and not w/ppc?

I'm going to try again but i guess i'll do a fresh os 8.1 on the 650, as it was upg to it before, and put this card back in it and post back. Also i even did the pram rst on the 650 and still had that bus error?

Thanks.