Article View: comp.sys.mac
Article #23364Re: Mac questions
From: Jeff T. Segawa
Date: Wed, 06 Jan 1988 19:17
Date: Wed, 06 Jan 1988 19:17
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In article <1953@rti.UUCP> rcb@rti.UUCP (Randy Buckland) writes: > > 1. Where is the socket for it on the motherboard? The PMMU chip is located near the 68020 microprocessor. > 2. I understand that it does not come on a standard MAC II. Is there > something that occupies the slot it should be in? Yes, there is a custom chip in the PMMU socket that is supposed to be a simple memory management unit. It comes standard on all II's. > 3. I have a MAC II with no empty sockets and a strange history. Is > there a way I can tell if I have it installed? What does > it look like? What are the numbers on it? I don't have the PMMU chip, but it ought to look very similar to the MC68820 chip it sits near--that is, it is a black ceramic square measuring about 3cm * 3cm. It may or may not have a gold colored metal plate on the top. The markings should probably say something like: "Motorola MC68851RC16". >
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Path: arc1-ca.pugleaf.net!utzoo!mnetor!uunet!husc6!mit-eddie!ll-xn!ames!sdcsvax!nosc!humu!uhccux!cm450s02 From: cm450s02@uhccux.UUCP (Jeff T. Segawa) Newsgroups: comp.sys.mac Subject: Re: Mac questions Message-ID: <1406@uhccux.UUCP> Date: 6 Jan 88 19:17:53 GMT References: <1953@rti.UUCP> Reply-To: cm450s02@uhccux.UUCP (Jeff T. Segawa) Organization: U. of Hawaii, Manoa (Honolulu) Lines: 19