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From: gjk@talcott.UUCP (Greg Kuperberg)
Newsgroups: net.micro.68k
Subject: Re: Why no INC or DEC
Message-ID: <246@talcott.UUCP>
Date: Sun, 20-Jan-85 22:26:23 EST
Article-I.D.: talcott.246
Posted: Sun Jan 20 22:26:23 1985
Date-Received: Tue, 22-Jan-85 06:31:16 EST
References: <242@talcott.UUCP>
Distribution: net
Organization: Harvard
Lines: 15

> Why doesn't the 68000 have increment or decrement instructions?
...
> 			Greg Kuperberg

And the answer is (thanx for all the replies) that you can use ADDQ and
SUBQ, since those instructions only take up one word.  Nevertheless, I
wince when I see "ADDQ #1,D0", even if it does have a Q in it.  I claim
this is a natural tendency, since this kind of thing really is inefficient
on other CPU's.  I advise making an INC and DEC macro if you also have this
tendency.
---
			Greg Kuperberg
		     harvard!talcott!gjk

"Nice boy, but about as sharp as a sack of wet mice." - Foghorn Leghorn