Path: utzoo!utdoe!generic!pnet91!ericmcg
From: ericmcg@pnet91.cts.com (Eric Mcgillicuddy)
Newsgroups: comp.sys.apple2
Subject: Re: sideaffect of MVN/MVP instruction
Message-ID: <798@generic.UUCP>
Date: 1 Jun 91 01:00:04 GMT
Sender: root@generic.UUCP
Organization: People-Net [pnet91], Etobicoke, ON
Lines: 13

>someone want to explain to me why the MVN/MVP instructions don't restore
>the data bank register? (yes, i'm moving data in different banks).
>
>albert

Because it does. It also modifyies the X, Y and A registers. The accumulator
is left with a -1 when the instruction completes. 

It might help if you think of the MVN/MVP as subroutines written in microcode
rather than opcodes.

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