68kMLA Classic Interface
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| Click here to select a new forum. | | 68030 CPU Swap | Posted by: warmech on 2020-10-13 05:33:39
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?
| Posted by: Byrd on 2020-10-13 05:54:46
Yes, it will function at 16Mhz in the IIx.
| Posted by: bigD on 2020-10-13 13:24:06
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?
| Posted by: Elfen on 2020-10-27 20:11:35
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.
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