Re: A83: _sfont_len doesn't work?

To: "'Assembly-83'" <assembly-83@lists.ticalc.org>
Subject: Re: A83: _sfont_len doesn't work?
From: Linus Akesson <lairfight@softhome.net>
Date: Thu, 6 Jul 2000 01:07:36 +0000 (GMT)
In-Reply-To: <01BFE60E.4B773F20@sgw154pub35.bluewin.ch>
Reply-To: assembly-83@lists.ticalc.org




In accordance with the prophecy, Sebastian Grössl uttered:

> 
> In one of my programs I wanted to use call _sfont_len, but it didn't work!
> I did not get the results I wanted!
> 
> In the Ti-documentation, they write:
> ;--------------------------------------------------------
> ;  _sfont_len : return the length of varible width
> ;		display char
> ;
> ;	    input : hl = char value
> ;	   output : b = width of char
> ;		     hl + 1 = 1st byte of char font
> ;-----------------------------------------------------------
> 
> I tried it with h=char value and l=char value and hl=(char value), but for b I only got 0, 21h, or something negative. What is the problem? Please help me!
> Greez
> 	Sebastian

It wants the character number multiplied by 8.

Took a while to figure out. Will take a while to figure out why. =)

(The intenal font table is of course 8 bytes per character, but there's no
apparent reason why _SFONT_LEN shouldn't do the multiplication.)

Linus
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
   "Good judgment comes from experience, and a lot of that comes from bad
   judgment."
                                                            --Will Rogers 
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References:

A83: _sfont_len doesn't work?

From: =?iso-8859-1?Q?Sebastian_Gr=F6ssl?= <sebgroessl@bluewin.ch>