Re: A86: simple math optimization

Re: A86: simple math optimization

• To: assembly-86@lists.ticalc.org
• Subject: Re: A86: simple math optimization
• From: Jimmy =?iso-8859-1?Q?M=E5rdell?= <yarin@acc.umu.se>
• Date: Tue, 12 May 1998 00:57:14 +0200
• Delivered-To: assembly-86-outgoing@towerguard.unix.edu.sollentuna.se
• In-Reply-To: <35577C14.5058E37C@eden.rutgers.edu>
• References: <7105e6eb.35576988@aol.com>
• Reply-To: assembly-86@lists.ticalc.org

At 18:30 1998-05-11 -0400, you wrote:
>If e is less than 16, you can do this:
>
> ld (hl),d
> ld a,e
> rld

Well, not THAT easy:

ld hl,temp  ; 10
ld (hl),d   ;  7
ld a,e      ;  4
rld         ; 18
ld l,(hl)   ;  7
ld h,a      ;  4

50 T cycles - 1 T cycles faster than mine routine :-/ Requires an
extra byte though.

--
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.algonet.se/~mja/

• A86: simple math optimization
• From: BIOSERRORS <BIOSERRORS@aol.com>
• Re: A86: simple math optimization
• From: Dux Gregis <assets@eden.rutgers.edu>

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