Article View: comp.sys.ibm.pc.misc
Article #9407Re: DR-DOS - Multitasking
From: Fred Rump from home
Date: Sun, 21 Apr 1991 15:27
Date: Sun, 21 Apr 1991 15:27
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1537 bytes
vcl@mimas.UUCP (Victor C. Limary) writes:
>What exactly is MP/M? I've heard of MP/M for my Apple II, but that was a
>CP/M clone, and I seriously doubt that it's what you're all talking
>about. Or is it?
You got it. MP/M was based on dividing 64KB up into chunks for
Multi-programming and memory sharing in a CP/M mode. It was a tough way to
write code. Most decent software for MP/M was written in assembler, mostly
Z80, and every last byte counted. It was the good old days where programmers
still had to worry about efficient code and limited resources.
There are still many systems running both CP/M and MP/M, but mostly overseas.
I'm just glad we now have 32 bit systems with 16MB of RAM and C and real
databases etc etc and UNIX, of course, but still on a PC.
fred
--
W. Fred Rump office: fred.COMPU.COM
26 Warren St. home: fred@icdi10.COMPU.COM
Beverly, NJ. 08010 bang: ...{dsinc uunet}!cdin-1!icdi10!fred
609-386-6846 "Freude... Alle Menschen werden Brueder..." - The Ode
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arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!zaphod.mps.ohio-state.edu!unix.cis.pitt.edu!dsinc!cdin-1!icdi10!frReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!zaphod.mps.ohio-state.edu!unix.cis.pitt.edu!dsinc!cdin-1!icdi10!fr From: fr@compu.com (Fred Rump from home) Newsgroups: comp.sys.ibm.pc.misc Subject: Re: DR-DOS - Multitasking Keywords: DR-DOS, DRI, Multitasking OS Message-ID: <1991Apr21.152708.19718@compu.com> Date: 21 Apr 91 15:27:08 GMT References: <AHT1X31@dri.com> <gsqm11w163w@mimas.UUCP> Organization: CompuData Inc. Lines: 18