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From: kenton@abyss.zk3.dec.com (Jeff Kenton OSG/UEG)
Newsgroups: comp.sys.next,comp.arch
Subject: Re: parity is for farmers?
Message-ID: <1991Jun3.144909.24609@decvax.dec.com>
Date: 3 Jun 91 14:49:09 GMT
References: <1991May21.232331.24888@cs.umn.edu> <1991Jun03.040242.15406@ariel.unm.edu> <1991Jun3.134917.12326@umbc3.umbc.edu>
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|> In article <1991Jun03.040242.15406@ariel.unm.edu>
ratshana@triton.unm.edu (R.L.) writes:
|> 
|> >2) I don't know about the NeXT, but the Amiga used to also store checksums
|> >   at the end of the file stored in RAM. Everytime in went to run
the program
|> >   it would calculate the checksum and compare it to the stored one,
if they
|> >   didn't match, it'd give you a dialog box saying so.

The Amiga needed to do this because it supported multi-tasking without an MMU.
Programs used to regularly trash each other's memory space.  It was one of the
most painful development environments I ever worked with.  Neat graphics
hardware, but pretty weak operating system.

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==	jeff kenton		Consulting at kenton@decvax.dec.com        ==
==	(617) 894-4508			(603) 881-0011			   ==
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