Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!swrinde!elroy.jpl.nasa.gov!decwrl!fernwood!portal!atari!momenta!tecot
From: tecot@momenta.com (Ed Tecot)
Newsgroups: comp.sys.mac.system
Subject: Re: LARGE System 7 memory usage
Message-ID: <1991Jun14.015623.3028@momenta.com>
Date: 14 Jun 91 01:56:23 GMT
References: <2042@manta.NOSC.MIL> <1991Jun12.165855.16095@Think.COM> <1991Jun12.175043.17702@neon.Stanford.EDU>
Organization: Momenta Corporation
Lines: 14

philip@pescadero.Stanford.EDU (Philip Machanick) writes:
>Another point: is there any good reason the system doesn't use
>memory above the 8M limit for the disk cache? It could also use
>this space for a second-level TrueType font cache. Perhaps this
>kind of trickery isn't considered worth the effort because everyone
>will have 32-bit clean machines soon (right?).

It can't use this memory for the same reason that the apps can't - it's
unable to address it.  All of the memory addresses in a stock Mac II
class machine are reserved for ROM and I/O.  It would take a small portion
of the trickery in VM to make it available.  Hmmm...  Dean?  Are you up
for it?

					_emt