[A89] Re: Intercepting ON

To: <assembly-89@lists.ticalc.org>
Subject: [A89] Re: Intercepting ON
From: "PaXaL" <PaXaL@ifrance.com>
Date: Fri, 12 Oct 2001 19:35:35 +0200
References: <da.d77c625.28f879f3@aol.com>
Reply-To: assembly-89@lists.ticalc.org


Trap #4 is called to turn the calculator down.

The way to intercept Trap #4 is the same way than to intercept an auto-int,
only the address in the vector table changes.

Just look to an auto-int interception code, and i'm sure you'll find how to
do the same thing for your program.

PaXaL


----- Original Message -----
From: <JHill8075@aol.com>
To: <assembly-89@lists.ticalc.org>
Sent: Friday, October 12, 2001 6:53 PM
Subject: [A89] Intercepting ON


> I am working on a TSR that will intercept when someone presses 2nd+ON (in
> otherwords, when someone turns the calculator off) and runs some code
before
> turning the calculator off. However, I have read that the ON key is not
part
> of the keyboard matrix and is associated with an interrupt. How then,
would I
> go about intercepting this before trap #5 (I believe trap #5 turns off the
> calc) is called? Thanks.
>
>
>

 
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Follow-Ups:

[A89] Re: Intercepting ON

From: Samuel Nyall Stearley <sstear70@calvin.edu>

References:

[A89] Intercepting ON

From: JHill8075@aol.com