[A83] Re: 2ND-MEM Blocking
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[A83] Re: 2ND-MEM Blocking
backups are the only (or at least easiest) method of initially modifying ram
such that you can run asm code. with a asm program running on the 83, you
could modify any of these areas 82 shells typically do. there would be no
need to use backups on the 83.
brandon sterner
----- Original Message -----
From: "Gavin Olson" <gtolson@comcast.net>
To: <assembly-83@lists.ticalc.org>
Sent: Sunday, March 30, 2003 8:03 PM
Subject: [A83] Re: 2ND-MEM Blocking
> At 07:46 PM 3/30/2003 -0500, you wrote:
> >there are no hooks at all on the ti-83. i'm not quite sure how the 82
> >shells work but i think they managed to change the context vectors and
keep
> >them modified until a ram reset... if you could modify the homescreen
> >context vectors in this manner you could accomplish the same as a key
hook.
> >(the cxmain pointer points to the routine which processes key presses)
> >
> >brandon sterner
>
> 82 shells have a certain level of control over protected areas because
they
> are installed by hand into backup files. If you wanted to move your shell
> to the realm of backup installing, the same solution might work. I'm not
> sure if TIOS would do stuff after the install, tho. Perhaps you can point
> the OS away from the areas you edited or something.
>
>
>
>
References: