[A83] Re: Special ram areas?

To: assembly-83@lists.ticalc.org
Subject: [A83] Re: Special ram areas?
From: Ronald Teune <RTWolf@gmx.net>
Date: Thu, 1 Nov 2001 09:06:36 +0100 (MET)
References: <5.1.0.14.0.20011031222623.035666c0@pop.home.se>
Reply-To: assembly-83@lists.ticalc.org


> 
> At 20:18 2001-10-31, you wrote:
> 
> > > Van: BRANDON STERNER <bms9019@osfmail.isc.rit.edu>
> >
> >It might be a good idea to create a new program and copy your fonthook
> into
> >it (or just make one yourself with TASM and bin2var). Give that
> >'fonthook'-program some distinguishable header. Then make a routine that
> >knows the last correct adress of the file, checks if it's still there
> >(fast), looks it up if not (slow), and jumps to it. Such code would be
> >small, and could fit into the stack area. This way you are compatible
> with
> >almost all programs that exist for the Ti83+ I guess.
> >
> >The header and the name of the program could be the same (to safe space).
> >Since the lookup routine has stored where your font-hook is, you can use
> >that info to calculate adresses inside the program (old Ti85 style).
> >
> >Good luck!
> >
> >         Henk Poley <><
> 
> If you archive the file, wouldn't that guarantee that it is always in the 
> same place?
> I am not sure about the 83+ architechture, but I am fairly sure that this 
> would be the case on a ti89 wich has no bank switching or stuff like that.
> Maybe a bit cumbersome to demand that the font file is archived though,
> but 
> could at least be a recommendation in the readme. (you probably would want

But how do I know on *which* location it is? I need a pointer somewhere on a
static ram area for that. But where?!

> that anyway since you have more space to spare in archive)
> 
> ///Olle
> 
> 
> 

-- 
    Ronald Teune @School
    http://www.zeekoe.cjb.net
    http://ti.zeekoe.cjb.net
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