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I think they are incorrect. The original Mac II (68020 machine) didn't ship with a full MMU. It had a socket for the 68851 though, if one wanted to add one. I s
by icedchai 4y ago
I think they are incorrect. The original Mac II (68020 machine) didn't ship with a full MMU. It had a socket for the 68851 though, if one wanted to add one. I somehow doubt many people did.
The newer Mac II's (IIx onward) were 68030-based, so they would've had MMUs built in. (They also released the Mac LC later on, which was 68020 based and had no socket for an MMU.)
- jacquesm 4y agoDid the operating system the machine shipped with know what to do with that MMU or was it ignored if installed and only used by alternative os's?
- icedchai 4y agoAs far as I know, it was ignored until System 7, which added virtual memory support. A/UX (Apple Unix) required it, but that wasn't released until a year or so after the Mac II was initially available.