68030 CPU Swap

[warmech]

After working on my IIx to get it up and running, I've been wondering about something. I have a dead, and almost certainly unrepairable, IIfx (there's something screwy going on in the NuBus section, in addition to exploded batteries that I've been fruitlessly repairing damage from) with a 40MHz 030 in it that I know works. Can the 16MHz 030 in the IIx be pulled and swapped out with the 40MHz 030 in the IIfx, or is there a fundamental architecture issue that would prevent this?

 

[Byrd]

Yes, it will function at 16Mhz in the IIx.

 

[bigD]

I assume the crystal provides timing for other stuff on the motherboard...is there a way to isolate any of it such that you can increase the clock for the CPU without affecting anything else?

 

[Elfen]

The crystal determines the speed of the CPU in the 68K machines.  So a 40MHz CPU in a 16MHz board will run as a 16MHz CPU.