yes you can, but for the blizzard PPC you have to:
change the voltage regulator from 5volts to 3.3volts,
change the card mode from 68040 to 68060,
while you're waving a soldering iron at it,
either switch the clock crystal to a 60/66Mhz part,
or change the jumpers to feed the PPC clock to the 68k socket.
and hey, maybe change the multipliers on the PPC bus to the next notch up (3x to 4x). to give you an extra frame per second in truereality, or 3-4fps in quake2 or heretic2 or something.
i have a BPPC/040, i have an 060 chip, i know all the solder points to mess with, i just don't have the canolies to hold a really really hot piece of metal against a 12yr old multilayer PCB... :-)
amiga centre france arn't answering my emails to ask them if they'd do it for me...
