>>> Hmm, as far as I know the 7500 ( and probably a few others ) has
>>> OpenFirmware and comes with a 601 - would this 'just work' or does it
>>> require additional work?
>>
>> I thought the 7500 had a 603 or 604.
>>
>> I think the 7200 has OF and should be close to working. I really 
>> haven't
>> looked at it, but I thought we added 601 support, so it should be 
>> within
>> easy reach.
> Then it was the 7200 - I only knew that there was at least one PCI Mac 
> with OF that comes by default with a 601 card.

the 7200 and the 8200 had a 601/601+ (dependend from clock speed, there 
were 75MHz, 90MHz, and 120MHz versions for the 7200; the 8200 was 
available in 100MHz and 120MHz flavours) soldered onto their mainboard. 
IIRC there were 'turboboards' (mainly G3) available for the L2 Cache 
slot, but this lacks importance here ;)

the 7500 had it's 100MHz 601 sitting on a daughtercard; it was renamed 
7600 when switching over to 604 CPUs (which had 120MHz or 132MHz). the 
7300 was the successor to the 7600, which from now on lacked the 
built-in AV-hardware (which was video-in only IIRC on the 7500 and the 
7600), but had 166MHz and 200MHz 604e.

>
>> the 7100 and friends will take more work.
> That's NuBus, isn't it? Probably closer to a Quadra with PPC card...

yip, the 6100/7100/8100 in all their versions were NuBus machines.

the first Power Mac sporting PCI slots (then a whole whopping six of 
them ;) was the 9500, which came out 1995, with 120MHz and 132MHz 604.

>
> have fun
> Michael

regards,

timo