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Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!nntp.coast.net!news.kei.com!newsfeed.internetmci.com!swrinde!cs.utexas.edu!not-for-mail From: sfkaplan@cs.utexas.edu (Scott Frederick Kaplan) Newsgroups: comp.unix.bsd.netbsd.misc Subject: Re: NetBSD on a Mac SE? Date: 7 Dec 1995 07:54:39 -0600 Organization: CS Dept, University of Texas at Austin Lines: 16 Distribution: world Message-ID: <4a6rmv$49r@quack.cs.utexas.edu> References: <49m0u3$lvl@huron.eel.ufl.edu> <MICHAELV.95Dec2231953@MindBender.HeadCandy.com> <MICHAELV.95Dec6223740@MindBender.HeadCandy.com> NNTP-Posting-Host: quack.cs.utexas.edu X-Newsreader: TIN [version 1.2 PL2] Michael L. VanLoon (michaelv@MindBender.HeadCandy.com) wrote: : But to interject more possibly corrupt memory into this, I don't : believe the SE/30 can go that high. Wasn't there a hard 13MB limit on : the older Macs because of the way the memory was arranged? Maybe that : was just a ROM limit that only affects the MacOS.... Although I don't know for sure if there's something else limiting the SE from using 128 megs of RAM, yes, the original limitation was at 14 megs. The MacOS used to use 24-bit addressing, and a good bit of that space was dedicated to devices, especially NuBus slots, leaving only 14 megs for RAM. When System 7 came out, they made the change to 32-bit addressing, and with a little System patch from Connectix, even old Macs can use the 32-bit addressing scheme. Scott Kaplan sfkaplan@cs.utexas.edu