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- From: ldo@waikato.ac.nz (Lawrence D'Oliveiro, Waikato University)
- Newsgroups: comp.sys.mac.system,comp.sys.mac.misc
- Subject: Re: Should I turn 32-Bit Addressing On or Off?
- Message-ID: <1992Sep8.092426.10668@waikato.ac.nz>
- Date: 8 Sep 92 09:24:26 +1200
- References: <Bu7twH.4Bo@well.sf.ca.us>
- Organization: University of Waikato, Hamilton, New Zealand
- Lines: 24
-
- In article <Bu7twH.4Bo@well.sf.ca.us>, vito@well.sf.ca.us (Andris Paul Vitols) writes:
- >
- > Pretty weird... I've been using system 7 on an LC II for several months and
- > have had 32-Bit Addressing off the whole time. What are the pros and cons
- > of this feature? Will it de-stabilize things? Speed things up? Thanks...
-
- 32-bit addressing is mainly needed if you want to use more than 8MB of
- memory. It *did* use to cause problems with several applications, but I
- think most vendors have cleaned up their act by now. I have 32-bit
- addressing on all the time on my LC at home, because that has 10MB of RAM
- and I want to use it all. But my IIfx at work only has 8MB, so I run it with
- 32-bit addressing off.
-
- Hacker's note: it's actually easier to write software in 32-bit mode. I wrote
- some QuickTime code that worked fine at home, but promptly crashed on my work
- machine. Various parts of QuickTime run internally in 32-bit mode, and I was
- forgetting to take proper account of that when passing addresses from code
- that might be running in 24-bit mode...
-
- Lawrence D'Oliveiro fone: +64-7-856-2889
- Computer Services Dept fax: +64-7-838-4066
- University of Waikato electric mail: ldo@waikato.ac.nz
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