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Re: Integer Basic Tokenization

Subject: Re: Integer Basic Tokenization
From: russotto@wanda.pond.com (Matthew Russotto)
Date: Fri, 16 Mar 2001 16:56:57 GMT
Newsgroups: comp.emulators.apple2, comp.sys.apple2, comp.sys.apple2.programmer
Organization: DiS(L)organized
References: <98rh8a$ead$1@news7.svr.pol.co.uk> <3AB1D3FB.8CE2B306@swbell.net>
Xref: supernews.google.com comp.emulators.apple2:823 comp.sys.apple2:6635 comp.sys.apple2.programmer:549

In article <3AB1D3FB.8CE2B306@swbell.net>,
Rubywand  <rubywand@swbell.net> wrote:
>
>     Looks like your idea about the $Bx code is right. My guess is that it's a
>way to speed up references by number. A code scan for a value can avoid doing a
>hex-->decimal conversion for all entries except those with the right first
>digit.

$Bx is the Apple ASCII value for a digit.  Allowing all the $Bx codes
probably shortens the tokenization code by a few instructions, because you
can just dump the first byte of the digit as the token.
-- 
Matthew T. Russotto                                russotto@pond.com
"Extremism in defense of liberty is no vice, and moderation in pursuit
of justice is no virtue."

References:
- Integer Basic Tokenization
  - From: "Thug" <thug5@optusnet.com.au>
- Re: Integer Basic Tokenization
  - From: Rubywand <rubywand@swbell.net>

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