Re: A83: NOW I REALLY DON'T KNOW WHAT'S GOING ON

To: <assembly-83@lists.ticalc.org>
Subject: Re: A83: NOW I REALLY DON'T KNOW WHAT'S GOING ON
From: "James Matthews" <matthews@tkb.att.ne.jp>
Date: Fri, 21 Aug 1998 03:36:19 +0900
Delivered-To: assembly-83-outgoing@towerguard.unix.edu.sollentuna.se
Reply-To: assembly-83@lists.ticalc.org


> It's quite simple actually, lets say a=5. Then a-1=4. Since 4=0100 in
> binary, you exclusive or the 0 bit and get 0101b. now add 1 and get 0110b
> which is 6. Let's say a=6. Then a-1=5 which is 0101 in binary. xor the 0
> bit, get 0100b. Add 1 and now we have 0101b which is 5.

How t.f. did you figure that out?!  Is it just practice?  Damn, that's
cool...

Sorry, kind of a pointless post (mine), but...:)

James.

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