Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!uw-beaver!mit-eddie!mintaka!oliveb!mipos3!cmdfs2!bklaas
From: bklaas@cmdfs2.intel.com (Brian Klaas~)
Newsgroups: comp.sys.mac.hardware
Subject: Re: PMMU question
Message-ID: <262@cmdfs2.intel.com>
Date: 19 Oct 89 18:00:39 GMT
References: <8092@microsoft.UUCP>
Reply-To: bklaas@cmdfs2.UUCP (Brian Klaas~)
Distribution: usa
Organization: Intel Corp., Chandler Microcomputer Division, Chandler AZ
Lines: 20

In article <8092@microsoft.UUCP> brianw@microsoft.UUCP (Brian Willoughby) writes:
>Just a quick question.  If the optional PMMU chip for the Mac II is NOT
>installed then how does the address bus get driven?  I'm assuming that
>the page address bits from the 68020 are sent to input pins on the PMMU
>and the PMMU generates the physical address value.  Is there some plug
>for the (ancient) Mac II which passes through the address bits?

Apple included its own MMU.  It does exactly that...  Passes the
address bits directly through.


Owner of an Ancient Mac II,



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** Brian Klaas, Design Engineer     ***  DISCLAIMER:  All opinions           **
** Intel Corporation                ***     stated here are strictly my own. **
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