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SWIM Chip Version
Posted by: franklyn on 2026-05-08 01:26:26
I have a SWIM chip from a IIcx motherboard and an oxidized one from a PPC7100 motherboard. How many different versions are there? Are they interchangeable, or is the pinout—for example—different?

I’m asking because I would like to have a Macintosh II with an 020 CPU for upgrade purposes...
Posted by: robin-fo on 2026-05-08 04:56:09
The one from the IIcx should work in the Mac II. The 7100 probably has a SWIM3 or NewAge or something..
Posted by: franklyn on 2026-05-08 10:34:28
... so there are

SWIM1 = 344SO061-A
SWIM2 = ?
SWIM3 = 343SO137-A
1