Re: A83: Beginner's Question


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Re: A83: Beginner's Question




Sure it works.

Before executing your program enter the debugger and set the breakpoint on 
the address $9D95 pressing the F2.
Now press F5 and execute your program.

The program will stop at the breakpoint.
Press F8 to step to _getkey command.

You must always use breakpoints if you want to track the execution.


>From: "Dale Watson" <merlin@cinternet.net>
>Reply-To: assembly-83@lists.ticalc.org
>To: <assembly-83@lists.ticalc.org>
>Subject: A83: Beginner's Question
>Date: Sun, 7 Jan 2001 18:34:06 -0500
>
>
>Hi,
>
>I am new to Assembly programming on TI-83 Plus.  I have tried to get the
>"GetKey" function to work on VTI, but it does not appear to respond to
>keypresses and if I interrupt it with the Debugger, it shows it at a "halt"
>instruction at 021Bh.  Following is my source code, which I assemble using
>the Chaos assembler.  Can anyone suggest why this does not seem to work in
>VTI?  (I have NOT tried to put this into the actual calculator.)
>
>_GetKey              .equ     4972h
>
>Loop:
>  rst 28H
>  .dw _GETKEY
>  cp $21
>  ret z
>  jr Loop
>  .end
>  .end
>
>Scot Watson
>
>

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