[A83] Re: halt + nop

To: assembly-83@lists.ticalc.org
Subject: [A83] Re: halt + nop
From: "Dan Weiss" <dwedit@hotmail.com>
Date: Sun, 01 Jul 2001 13:35:20 -0500
Reply-To: assembly-83@lists.ticalc.org


HALT waits for the next interrupt, which takes 1/200th seconds, and uses 
less power than normal processing.  Don't use HALT unless interrupts are 
enabled (EI).  HALT is often used in delays and before getting keys from the 
keyboard.

NOP does nothing.  Nothing.  NOP is useful if you need a delay with 
interrupts disabled, or when you use self modifying code.  For example, if 
you need to comment out code while a program is running, you replace it with 
NOPs.


>From: "The one and only SUCKER!! ..." <sucker_pvn@hotmail.com>
>Reply-To: assembly-83@lists.ticalc.org
>To: assembly-83@lists.ticalc.org
>Subject: [A83] halt + nop
>Date: Sun, 01 Jul 2001 17:54:47 -0000
>
>
>What does nop do? And halt? I use halt after shutting
>my Ti-83 down so the _getk part works, but I don't
>understand what they do exactly...
>_________________________________________________________________________
>Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.
>
>
>

_________________________________________________________________
Get your FREE download of MSN Explorer at http://explorer.msn.com

Follow-Ups:

[A83] Re: halt + nop

From: "Kirk Meyer" <kirk.meyer@colorado.edu>