home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: comp.sys.amiga.programmer
- Path: sparky!uunet!portal!cpc
- From: cpc@shell.portal.com (Chris Cebelenski)
- Subject: Re: physical memory protection with MMU
- Message-ID: <Bxo6pD.LnG@unix.portal.com>
- Keywords: mmu, memory, task
- Sender: news@unix.portal.com
- Nntp-Posting-Host: jobe
- Organization: Portal Communications Company -- 408/973-9111 (voice) 408/973-8091 (data)
- References: <1du485INNdbn@uni-paderborn.de> <nn.geht.nicht.die-zweite.121192@uni-paderborn.de> <1duvk4INN65q@darkstar.UCSC.EDU>
- Distribution: worlD
- Date: Fri, 13 Nov 1992 19:41:36 GMT
- Lines: 11
-
- > [Text about how not many programs share memory, and how a protected OS
- wouldn't break most software.]
-
-
- To keep this short and sweet, I would have to say that almost ALL AmigaDOS
- programs use shared memory. Intuition IDCMP ports are passed BY ADDRESS,
- meaning that only a pointer to a memory location is passed. One workaround
- would be to make the OS run in a "kernal" mode with page protection overrride.
- Less programs would break, but there still would be mondo problems.
- cpc
-
-