Re: A86: Lookup tables

To: assembly-86@lists.ticalc.org
Subject: Re: A86: Lookup tables
From: Bryan Rabeler <brabeler@isd.ingham.k12.mi.us>
Date: Wed, 03 Jun 1998 20:58:15 -0400
Delivered-To: assembly-86-outgoing@towerguard.unix.edu.sollentuna.se
References: <3.0.5.32.19980603024102.007dae40@mail.acc.umu.se> <3.0.5.32.19980604023027.00837d80@mail.acc.umu.se>
Reply-To: assembly-86@lists.ticalc.org


Jimmy Mårdell wrote:

> At 22:47 1998-06-02 EDT, you wrote:
> >Wouldn't fetching the answer in itself involve multiplication?  I'm
> >having trouble thinknig of how to explain this, but how would you be able
> >to know where to look in the table without multiplication?
>
> No. It's not that easy though, if you decide to skip half of
> the lookup table:
>
>     0  1  2  3  4  5  6  7  8  9
>  ---------------------------------
> 0   0  0  0  0  0  0  0  0  0  0
> 1      1  2  3  4  5  6  7  8  9
> 2         4  6  8 10 12 14 16 18
> 3            9 12 15 18 21 24 27
>

That's not skipping exactly half.  You are skipping a little less than half,
but close enough. :)

--
Bryan Rabeler <brabeler@ticalc.org>
   File Archives, HTML, and Support
   the ticalc.org project - http://www.ticalc.org/

Follow-Ups:

Re: A86: Lookup tables

From: David Phillips <electrum@tfs.net>

References:

Re: A86: BG v1.0 grayscale converter is out !

From: Jimmy =?iso-8859-1?Q?M=E5rdell?= <yarin@acc.umu.se>

A86: Lookup tables

From: Jimmy =?iso-8859-1?Q?M=E5rdell?= <yarin@acc.umu.se>

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