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- Path: sparky!uunet!charon.amdahl.com!amdahl!JUTS!duts.ccc.amdahl.com!aces
- From: aces@mcode.amdahl.com (Jeffrey D. Smith)
- Newsgroups: comp.sys.amiga.misc
- Subject: Re: 68010
- Keywords: 68010
- Message-ID: <a3y=02SL21F701@JUTS.ccc.amdahl.com>
- Date: 11 Sep 92 19:16:12 GMT
- References: <1992Sep6.180145.17394@cs.mun.ca> <starman.039m@crash.amigans.gen.nz> <4444@equinox.unr.edu>
- Sender: netnews@ccc.amdahl.com
- Reply-To: jds30@amail.amdahl.com
- Organization: Amdahl Corporation, Sunnyvale Ca.
- Lines: 21
-
- In article <4444@equinox.unr.edu>, dollens@equinox.unr.edu (C Blake Dollens) writes:
- > Someone on a local BBS suggested to me recently that a 68010 processor supports
- > virtual memory. My immediate response was no, because you need a PMMU for that
- > purpose. On the other hand, I realize that I know very little about the '010.
- > Am I right? What is the difference between the 68000 and the 68010? I was
- > under the impression that the '010 had slightly more efficient instruction code
- > in some areas, and that's all. Benchmarks wouldn't increase with an '010
- > significantly, would they? I think this was covered in this newsgroup a while
- > back; I apologize if everybody's already heard this. Thanks in advance.
- CAVEAT: I'm speaking from poor memory.
-
- The 68010 supports virtual memory almost the same as the 68020
- supports virtual memory. That is by a new stack format. You'll
- still need the MMU (68851?) as a co-processor or peripheral
- device to remap addresses, and thus cause the needed exception
- for a missing page. That's all I can remember, and it may not be
- completely accurate.
-
- The performance improvement of the 68010 over the 68000 is slight,
- but some folks seem to perceive it in their daily applications.
- (Assuming their clock rates are the same, just different CPUs.)
-