Path: utzoo!attcan!uunet!auspex!guy
From: guy@auspex.UUCP (Guy Harris)
Newsgroups: comp.sys.m68k
Subject: Re: Why does addq.w #n,sp work?
Keywords: C asm addq
Message-ID: <670@auspex.UUCP>
Date: 10 Dec 88 07:19:22 GMT
References: <5005@bsu-cs.UUCP> <5460@cbmvax.UUCP> <1100@ncar.ucar.edu>
Reply-To: guy@auspex.UUCP (Guy Harris)
Distribution: na
Organization: Auspex Systems, Santa Clara
Lines: 15

>The other reason that everyone seemed to miss is that this method saves
>2 bytes.

People miss it because it's not true.

	addq.w	#8,sp

and

	addq.l	#8,sp

both take two bytes.

However, on the 68010, according to my '010 reference manual, the
"addq.w" takes 4 clocks, and the "addq.l" takes 8.