Re: A89: Check sum problem Really need help

To: assembly-89@lists.ticalc.org
Subject: Re: A89: Check sum problem Really need help
From: Nathan Mueller <nlmueller@students.wisc.edu>
Date: Wed, 2 Dec 1998 19:23:19 -0600
Delivered-To: assembly-89-outgoing@towerguard.unix.edu.sollentuna.se
In-Reply-To: <29f0cb60.3665e64b@aol.com>
Reply-To: assembly-89@lists.ticalc.org


>The TI-89 will tell you when the batteries get low, and when they get very
>low, but besides that there is no way to tell.  However, if the calc can tell
>you when the batteries are low it might be possible to write a battery level
>program.
>
>Daniel Imfeld

I looked into the issue and don't really think that would be possible any
more.  I suspect that the 89 had a low battery inturupt, not just a ROM
function that gets called every so many clock cycles.  So without changing
the actual hardware you couldn't really change the battery alert system.
Computers have a similar inturupt that occurs when the power is failing.

	--Nate

References:

Re: A89: Check sum problem Really need help

From: Daniel7073@aol.com

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