Apollo 1230 cpu replacement

[Tahoe]

If you have the Apollo 1230 MK3 (this one) you should be able to swap the SMD one with a PGA as pictured. Can't tell you if you need to alter any jumper/solderpads but wouldn't think so.

[Tahoe]

Beowulf wrote:

Yes I do have the MkIII. If I get a 40mhz 68030 and use a 33mhz FPU with a 40mhz crystal would this sycrhonize the CPU and FPU? i.e. keep the CPU at 40mhz and bring the FPU up to 40mhz from 33mhz or would this cause problems?

Originally your board came with a 33Mhz EC030 and a 882 33Mhz both running at 40Mhz (they both use the same crystal).

What you could do is either "just" plug in a 40Mhz CPU, that would give you a 030@40Mhz and a 882@40Mhz of which only the 882 is overclocked.

What you could also do is replace both the 030 and 882 with 50Mhz versions and replace the crystal.

Try to get a hold of a full 030 instead of an EC version while you have the chance, that gives you an MMU.

[Tahoe]

BTW: Just read you think your problems are RAM related, did you set/unset the RAM jumper (60ns)? Problem can be caused by having it set at 60ns while the SIMM can only handle 70.