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From: mjkobb@media-lab.media.mit.edu.MEDIA.MIT.EDU (Michael J Kobb)
Newsgroups: comp.sys.mac.hardware
Subject: IIfx memory config. with and w/out 32-bit addressing
Summary: What happens if I turn 32-bit off?
Message-ID: <5714@media-lab.media.mit.edu.MEDIA.MIT.EDU>
Date: 24 Apr 91 16:24:25 GMT
Reply-To: mjkobb@media-lab.media.mit.edu (Michael J Kobb)
Organization: MIT Media Lab, Cambridge MA
Lines: 17

Greetings,

  Let's imagine that I suddenly have enough money to upgrade my IIx to a IIfx
(ha!).  So now, I need to buy memory.  If I buy four 4-Meg SIMMS, and 4 1-meg
SIMMS, I now have 20Mb of physical RAM.

  Okay, fine.  In order to address that much memory, I need 32-bit addressing
turned on (in System 7).  My question is, how much memory will I see if I turn
32-bit off?  (i.e. if I need to run some non-32-bit-happy software)

  I'm pretty sure this has been answered before, but I can't seem to find it
anywhere.

  Email is fine, and I'll summarize.

Thanks!
--Mike