Re: A86: Will this work?

To: assembly-86@lists.ticalc.org
Subject: Re: A86: Will this work?
From: Jimmy =?iso-8859-1?Q?M=E5rdell?= <yarin@acc.umu.se>
Date: Fri, 12 Jun 1998 02:47:40 +0200
Delivered-To: assembly-86-outgoing@towerguard.unix.edu.sollentuna.se
In-Reply-To: <Pine.LNX.3.96.980611145259.973A-100000@S-103-151.resnet.oh io-state.edu>
References: <c6c5a062.35800e31@aol.com>
Reply-To: assembly-86@lists.ticalc.org


At 14:58 1998-06-11 -0400, you wrote:
>> 	ld		h,a
>> 	ld		l,0					;hl = a * 256
>> 	srl		h
>> 	jr		nc,No_Carry
>> 	set		7,l
>> No_Carry:
>
>It should work, but replacing the "jr;set" by "rr L" would be smaller and
>faster.

...and

 rla
 ld h,a
 ld l,0
 rr l

one cycle faster (& byte shorter) _IF_ you know the carry was cleared when
the routine is performed...

--
Real name: Jimmy Mårdell                "can't go mucking with a 'void *'"
IRC......: Yarin                                // Apple's MPW C compiler
Email....: mailto:yarin@acc.umu.se        
Homepage.: http://www.acc.umu.se/~yarin/   <-- NEW HOMEPAGE!!

References:

A86: Will this work?

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