Silly perhaps, but has anyone tried this?

[Dr_Righteous]

I was looking over the pinouts for the 68040 and 68060 and discovered that they're nearly identical... There are a couple differences, but I'm not sure they really matter.

Has anyone out there tried taking an A3640 card, changing out the regulator to make it 3.3v... Changing out the occilator for 50MHz... Cutting off the center pins of the 68060 and seeing if the system worked?

Obviously you'd lose the advantage of added memory and a few new features... But you'd end up with an upgrade far cheaper than a Cyberstorm MK3 if it worked.

Any thoughts?

[Dr_Righteous]

Yes, the occilator on the card is a 50MHz one... But the question is where is the halving taking place? If it's occuring before the pCLK pin, then it's being driven with 25MHz... In which case I'll have to change out my occilator with a 100MHz one.

Either way, I'm working on an adapter board to just plug the 68060 into the 68040 socket... Adding of course the extra power and ground connectors, and high/low pulls to the other pins. Should make for an interesting project!

[Dr_Righteous]

Actually, I'm working on the schematic for a processor adapter board... One that'll plug directly into the CPU socket (just like the Sonnet Quaddoubler). It'll be publicly released because I'm all about the community  :-D