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From: rob@ctvax.UUCP
Newsgroups: net.jokes.d
Subject: Re: Re: Assembler Manual Needed - (nf)
Message-ID: <5823@uiucdcs.UUCP>
Date: Wed, 22-Feb-84 23:03:16 EST
Article-I.D.: uiucdcs.5823
Posted: Wed Feb 22 23:03:16 1984
Date-Received: Fri, 24-Feb-84 00:32:55 EST
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#R:astrovax:-22000:ctvax:36800001:000:328
ctvax!rob    Feb 21 10:50:00 1984

There is a way to get a PDP-11 to run backwards! The following
instruction copies itself to the location preceding it and then
executes the new instruction.

    mov -(pc),-(pc)

Great fun until you hit a memory trap or something.
Don't hide one in your programs.

regards, Rob Spray  {decvax!cornell | ucbvax!nbires}!ctvax!rob