RE: LZ: Variables and Compression

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RE: LZ: Variables and Compression

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I was once thinking about a compression sort of thing, myself.  I =
thought we could compress programs by having pointers to places in rom, =
or something like that.  I'm sure all of the opcodes are used somewhere =
in ROM.  Or the compression program could just have a table of the most =
common ones.  The program could also look for strings of bytes that =
appear in ROM (using the handy block search commands).  I'm sure with =
some combination of the two (opcode look-up and ROM replacement), =
programs could be made much smaller... Just my thoughts...
	Sam


----------
From: 	Alan Bailey[SMTP:bailala@mw.sisna.com]
Sent: 	Thursday, November 28, 1996 1:31 PM
To: 	list-zshell@lists.ticalc.org
Subject: 	Re: LZ: Variables and Compression


Andrew Haninger wrote:
>=20
> about the compression stuff, i'm starting on a compression program =
that
> should compress string vars. although, with the method i'm usingg, i =
need
> some way(in tibasic) to figure out if a subbed character is a =
character or
> a number. is this possible? here is how i hope it will work in the =
future:
> the string "99A" will uncompress to 99 uppercase A's so, with this =
method,
> the zshell games won't compress too well since there aren't too many
> characters in them that are consecutively congruent. although, if i =
can
> find out how to convert them to binary strings, i would hope that they =
would
> shrink tremendously. i hope this works..............
>=20
>=20
> Andy Haninger
> aka &y
> ahaning@freenet.columbus.oh.us


A month or two ago, two people said they would work together on=20
compression, but I don't know what came of it.  You can check the lz=20
archives to find the people.


--=20
Compliments of:
_-_-_-_-_-_-_-_
  Alan Bailey
  mailto:bailala@mw.sisna.com
  IRC:Abalone
  Web:http://www.mw.sisna.com/users/bailala/home.htm






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