Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!blkcat!Uucp
From: DON.NOLL@p3425.f421.n109.z1.FidoNet.Org (DON NOLL)
Newsgroups: comp.sys.mac.hardware
Subject: What do Rev B ROMs do?
Message-ID: <676180918.0@blkcat.FidoNet>
Date: 5 Jun 91 15:27:41 GMT
Lines: 12

BL> What do the Rev B ROMs in a Mac II do that the Rev A ROMs did not?
BL> Didn't this upgrade have something to do with 32-bit addressing?
BL> What's the difference between a Rev B ROM upgrade and the upgrade
BL> everyone wants Apple to provide to allow 128MB of RAM?
BL> 
BL> Brodie Lockard
BL> brod@jessica.stanford.edu
BL> 
BL> Brodie Lockard      brod@jessica.stanford.edu

On of the things the REV B roms do is allow a NUBUS card to access more than 1 meg of ram each.  This helps you if you have a video board with gobs of memory or a NUBUS memory card for AUX.
 * Origin: Don's Point, Get it? (1:109/421.3425)