Re: A86: 8-bit multiply routine

To: assembly-86@lists.ticalc.org
Subject: Re: A86: 8-bit multiply routine
From: Kirk Meyer <_@ibm.net>
Date: Fri, 05 Jun 1998 09:30:22 -0600
Delivered-To: assembly-86-outgoing@towerguard.unix.edu.sollentuna.se
References: <3.0.5.16.19980604145623.2cb7ea6c@mailserver.netcarrier.com> <35777E33.B91@busprod.com>
Reply-To: assembly-86@lists.ticalc.org


its only faster if b is a very small number, i.e. < 20 or so

Tercero wrote:
> 
> I'm going add a little more redundancy.
> 
> Here's a routine that I made that's not 8x8 but it might be faster
> than both of the routines earlier mentioned. (I didn't check)
> 
> ;       syntax:  de * b -> hl
> Small_Mult:
>         ld hl, 0                ;10
> Multloop:
>         add hl, de              ;11
>         djnz Multloop           ;13/8
>         ret                     ;10
> 
> Tercero
> 
> Joshua Grams wrote:
> >
> > Sorry about the redundant multiply routine. I didn't see Dan's message.
> > Mine is the same as his, except he unrolled the loop and takes A and L as
> > inputs instead of H and L.
> >
> > --Joshua

-- 

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=   Kirk Meyer (mailto:_@ibm.net)   =
= http://www.bigfoot.com/~kirkmeyer =
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=   "Set your affection on things   =
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References:

Re: A86: 8-bit multiply routine

From: Joshua Grams <j3grams@earthling.net>

Re: A86: 8-bit multiply routine

From: Tercero <tercero@busprod.com>