Does anyone have any information on how to clock chip a SE/30
to make it run at 25MHz? I have a IIsi that I can raid for parts.

The compacts use a single clock to run everything. So, if you try to speed up the CPU, then the serial data rate, floppy drive comm. rate, etc. all speed up, too. That makes things break, not because they can't keep up, but because they are designed to transfer data at a specified rate, period.

Other Macs decouple the cpu speed from i/o speed, so you can selectively overclock the cpu to prevent these problems. But a Plus, SE, SE/30...no way.

The IIx (not IIsi) shares architectural similarities with the SE/30, including an inability to be overclocked. If you want to go faster, you need an accelerator card. No simple clock chip swap will do the job.

--Cheers,
Tom


--
Prof. Thomas H. Lee
Center for Integrated Systems, CIS-205
420 Via Palou Mall
Stanford University
Stanford, CA 94305-4070
http://www-smirc.stanford.edu
650-725-3709 voice, -3383 fax

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