[A83] Re: shut down the caltc : take care of the screen or not ?

[A83] Re: shut down the caltc : take care of the screen or not ?

• To: "Assembly-83 list" <assembly-83@lists.ticalc.org>
• Subject: [A83] Re: shut down the caltc : take care of the screen or not ?
• From: "Patai Gergely" <patai_gergely@fastmail.fm>
• Date: Sat, 16 Aug 2003 07:25:07 +0100
• In-Reply-To: <010901c36396$8037ca50$0201a8c0@brinstar>
• References: <05I98TPE0D9LJZYXEA64UT8462GEIF.3f3cdc03@typhon> <010901c36396$8037ca50$0201a8c0@brinstar>
• Reply-To: assembly-83@lists.ticalc.org

> The calc is never really ``off'' unless you pull the batteries.  Turning
> it off merely disables the LCD and puts the CPU into low power mode (using
> halt).  The on key generates an (NMI?) interrupt which breaks the CPU out
> of halt mode.
I'm quite sure it isn't a NMI, as there's no routine beginning at 66h. I
guess you could completely halt the calculator by masking both interrupts
before turning it off.

PG

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• [A83] Re: shut down the caltc : take care of the screen or not ?
• From: Martin <iemandiemand@xs4all.nl>

• [A83] shut down the caltc : take care of the screen or not ?
• From: guillaume.h@ifrance.com
• [A83] Re: shut down the caltc : take care of the screen or not ?
• From: "David Phillips" <david@acz.org>

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