Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!watmath!clyde!burl!ulysses!allegra!mit-eddie!godot!ima!ISM780!darryl
From: darryl@ISM780.UUCP
Newsgroups: net.micro.68k
Subject: Re: Why no INC or DEC
Message-ID: <46@ISM780.UUCP>
Date: Tue, 22-Jan-85 00:30:08 EST
Article-I.D.: ISM780.46
Posted: Tue Jan 22 00:30:08 1985
Date-Received: Wed, 23-Jan-85 06:02:06 EST
Lines: 10
Nf-ID: #R:talcott:-24200:ISM780:22100001:000:526
Nf-From: ISM780!darryl    Jan 20 16:18:00 1985

Although there are no instructions with mnemonics 'inc' or 'dec', there are
the addq and subq (add or sutract quick) instructions.  They allow adding
or subtracting values in the range [1,8], which is just the thing when
advancing a pointer through consecutive array elements.  They both occupy
1 (16 bit) word (exclusive of address displacements), so they are just as
compact as they can be.

	    --Darryl Richman, INTERACTIVE Systems Inc.
	    ...!cca!ima!ism780!darryl
	    The views expressed above are my opinions only.