Re: A86: Useful Information

To: <assembly-86@lists.ticalc.org>
Subject: Re: A86: Useful Information
From: "Matt2000" <matt2000@gte.net>
Date: Tue, 21 Apr 1998 21:51:52 -0400
Delivered-To: assembly-86-outgoing@towerguard.unix.edu.sollentuna.se
Reply-To: assembly-86@lists.ticalc.org


Interesting! I havent really been following the discussion because I could
not keep up with you guys..where can these programs be found and how would
you modify them? Does this explain why everything seems soooo slow in TI-OS
but nice and fast in as because all these programs are run and it slows
things down? (sqrt)EXEC, is that run when the calculator starts up? Does
anyone have a really simple example (with comments) of how to use one like
the (sqrt)KEY program?

-Matt
http://www.dogtech.com/cybop/ti86/

>Okay, alright already I'll tell you. (IY+$24) contains flags for running
>special programs. These programs and there corresponding bits are as
>follows:
>     0: (sqrt)PARSE
>     1: (sqrt)FORM
>     2: (sqrt)EXEC
>     3: (sqrt)EXPR  [I'm not sure about that one... it might be 6,(IY+$23)]
>     4: (sqrt)HOME
>     5: (sqrt)CMDTOK
>     6: (sqrt)KEY
>     7: (sqrt)GRF
>if these bits are set and these programs exist, then they are run whenever
>the specified action occurs. therefore if you move some code into a new
>program called (sqrt)whatever then it will be called every time your
>specified thing happens.  in the TI demo it installs #6, (sqrt)KEY and if
it
>sees you are at a memory screen (by looking at _CXCURAPP) it does some
stuff
>to make sure you don't delete anything.  i think, for example, it would be
>possible to make a routine that ran every time you went to the home screen
>(#4), every time you went to the graph screen (#7), every time you enter a
>command must be processed (#0), every time a program is run (#2), etc. i
>haven't tried any of these so feel free to correct me if i'm wrong.
>     Kirk
>     _@ibm.net
>

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Re: A86: Useful Information

From: Dux Gregis <assets@eden.rutgers.edu>