[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@lists.ticalc.org
• Subject: [A83] Re: shut down the caltc : take care of the screen or not ?
• From: Martin <iemandiemand@xs4all.nl>
• Date: Sat, 16 Aug 2003 15:03:19 +0200
• In-Reply-To: <20030816062507.B9BD777464@smtp.us2.messagingengine.com>
• References: <010901c36396$8037ca50$0201a8c0@brinstar> <05I98TPE0D9LJZYXEA64UT8462GEIF.3f3cdc03@typhon> <010901c36396$8037ca50$0201a8c0@brinstar>
• Reply-To: assembly-83@lists.ticalc.org

At 07:25 AM 8/16/2003 +0100, you wrote:
> > 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

You indeed need to pull the batteries when you have disabled interrupts or 
masked them all out and then execute a halt.

Martin

• [A83] Re: shut down the caltc : take care of the screen or not ?
• From: =?ISO-8859-1?Q?Leif_=C5strand?= <leif.astrand@multi.fi>

• [A83] Re: shut down the caltc : take care of the screen or not ?
• From: "David Phillips" <david@acz.org>
• [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: "Patai Gergely" <patai_gergely@fastmail.fm>

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