Re: autodecrement PC

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Article #1650

#1650

From: Paul Rodman
Date: Tue, 25 Jul 1989 13:48

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In article <3893@phri.UUCP> roy@phri.UUCP (Roy Smith) writes:
>
>	I always wanted to try (I don't know why I never did) using
>auto-decrement mode on r7 (i.e. the pc).  I wonder what would happen?  A

Yes, it works... We had fun finding out that 014747 (octal) or 

                  MOV -(PC),-(PC) 

was a nice "seed" instr that would
fill memory backwards from wherever you keyed it in until you hit the I/O and
Trap vector locations, Bam! :-)

pkr

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<3256@wpi.wpi.edu> <EGDORF.89Jul21195924@zaphod.lanl.gov> <443@anasaz.UUCP> <BRUCE.89Jul23155646@heather.pooh.com> <3893@phri.UUCP>

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!cs.utexas.edu!uunet!yale!mfci!rodman
From: rodman@mfci.UUCP (Paul Rodman)
Newsgroups: comp.arch
Subject: Re: autodecrement PC
Message-ID: <958@m3.mfci.UUCP>
Date: 25 Jul 89 13:48:00 GMT
References: <3256@wpi.wpi.edu> <EGDORF.89Jul21195924@zaphod.lanl.gov> <443@anasaz.UUCP> <BRUCE.89Jul23155646@heather.pooh.com> <3893@phri.UUCP>
Sender: rodman@mfci.UUCP
Reply-To: rodman@mfci.UUCP (Paul Rodman)
Organization: Multiflow Computer Inc., Branford Ct. 06405
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