RE: A85: Link Port
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RE: A85: Link Port
The best way to figure out what the calculator is doing is to find out what
the active "application" is. The Home Screen is an application, and so is
the program editor, the graph screen, the solver, etc. Here is the list of
"full-screen editors", or applications, from the TI-85 manual: (p. 1-20,
Moving around the TI-85)
CONS EDIT
LIST EDIT
MATRX EDIT
VECTR EDIT
STAT EDIT
PRGM EDIT
POLY
SOLVER
SIMULT
MATH INTER
STAT FCST
GRAPH y(x)=
GRAPH r(0)=
GRAPH E(t)=
GRAPH Q'(t)=
GRAPH RANGE
GRAPH ZOOM ZFACT
The Home Screen isn't listed, but I think the calculator considers it an
application. I don't think that screens like the Catalog or VARS are
considered applications, because they put the user back into the same
application when they are closed. The MEM RAM and MEM DELETE are probably
applications, and so is probably LINK. The hard part is finding where in
memory the calculator keeps track of the current application. If a TSR
could check this spot in memory, it could exit the current application when
one that was designated as blocked was entered, and perhaps display an
ACCESS DENIED message so the user knows what happened.
________________
Jeff Tyrrill
http://tyrrill-ticalc.home.ml.org/
http://ti-files.home.ml.org/
-----Original Message-----
From: Will Stokes [SMTP:wstokes@vertex.ucls.uchicago.edu]
Sent: Saturday, October 25, 1997 7:36 PM
To: assembly-85@lists.ticalc.org
Subject: Re: A85: Link Port
the gets at an idea I've been thinking about fro quite a while: a nie
usgard program that allows you to shut "off" certain features of the ti-os
eg: causing the memory free stuff to not show anything or making linking
be impossible (annoying connect error messages :) )
This is possibly using tsr's but it'd be complicated. is there some sort
of byte which the calc uses to know where it is in execution ? (what kinda
operation is present, eg graphing, programming, compiling, linking, etc
etc.)
if so this oprogram ould be VERY easy to make :)
On Sat, 25 Oct 1997, John Koch wrote:
> How fesiable would it be to make a program that password protects your
> link-port? I mean, I let my friends use my calculator, but they are
> always either trying to take my games or give me ones that might have
> bugs in them. So I want a program that you could not Recieve or
> Transmit Files without a password. I'm sure this is possible by either
> place a CALL in the rom before the link options to an asm code. We have
> done things sorta like this with TSR's. Not the same thing thou. But I
> also might want them to have access to teh math functions and stuff, so
> I don't want to keep them stuck in Z-Shell C-Shell or whatever shell I
> have on at the time.
>
> Thanks,
> John
>
> ______________________________________________________
> Get Your Private, Free Email at http://www.hotmail.com
>
Biya! =)
. . .
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. Will Stokes .
. wstokes@vertex.ucls.uchicago.edu .
. wstokes@geocities.com .
. http://www.geocities.com/SiliconValley/Pines/7360/will.htm .
. .
. .
. http://www.geocities.com/SiliconValley/Pines/7360/ .
. . (The TI-85 Calc. Center) .
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