Re: A86: menus

To: assembly-86@lists.ticalc.org
Subject: Re: A86: menus
From: Joshua J Seagoe <rabidcow@juno.com>
Date: Mon, 25 Oct 1999 14:37:54 -0700
Reply-To: assembly-86@lists.ticalc.org

the current context state tells the ti-os what it's doing at the moment. 
there are up to six context state handlers at a given time:
 _cxMain	: gets every keystroke
 _cxPPutAway	: called before _cxPutAway, i don't know why
 _cxPutAway	: called to close the current context
 _cxRedisp	: redraw?
 _cxErrorEP	: take care of errors
 _cxSizeWind	: adjust text window for menus
(there's also a flag byte)
theoretically, you could set up a context state involving some of
these,return to the ti-os, and your program would still be running.  the
calc would think it was running one of it's internal apps, like the list
editor or the mode menu.  i don't now if you'd have to interpret the menu
keys or not, but your cxMain routine would get all the keystrokes.
i've never managed to set a context state from an asm program without
crashing the calc soon afterwards.  i think.

-josh

On Mon, 25 Oct 1999 06:45:25 -0700 Cassady Roop <croop@oregontrail.net>
writes:
>
>Er, context state?  What's that?  Something that tells the same 
>routine
>to do different things in different situations?
>
>
>
>Joshua J Seagoe wrote:
>> 
>> in order to something like that with the built in menu routines, 
>you'd
>> probly have set up your own context state, which i don't think 
>anyone
>> outside of ti knows how to do yet.
>> 
>> -josh
>> 
>> On Sun, 24 Oct 1999 10:09:56 -0700 Cassady Roop 
><croop@oregontrail.net>
>> writes:
>> >
>> >OK, the rom's menu routines are making me quite mad.  I'm trying 
>to
>> >make
>> >a menu bar like that which is produced by the BASIC command 
>'menu()'.
>> >
>> >This menu bar is just like TI-OS menus, except you cannot clear it
>> >away
>> >by simply pressing 'exit', and you can't do anything until you 
>press
>> >one
>> >of the F keys.
>> >
>> >I made a little program to test out the menu info I found at Dux's
>> >site.  It made the menu just fine.  But this menu is a TI-OS menu.
>> >Once
>> >invoked, it executes entirely separate of my program, and waits 
>for
>> >the
>> >program to end before it even lets the user make selections.  And 
>a
>> >press of the exit key terminates it.
>> >
>> >Is there any way (well, if the BASIC interpreter does it, there 
>MUST
>> >be)
>> >to invoke a BASIC menu instead of a TI-OS menu?  I don't want the
>> >user
>> >to be able to press exit;  I want everything to stop until the 
>user
>> >makes a selection, and then the program continues.
>> >
>> >Thanks,
>> >
>> >Cassady Roop
>> >ti86prgm.freeservers.com
>> >
>> 
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