Re: A86: reading keys

To: assembly-86@lists.ticalc.org
Subject: Re: A86: reading keys
From: ComAsYuAre@aol.com
Date: Wed, 7 Oct 1998 16:54:35 EDT
Delivered-To: assembly-86-outgoing@towerguard.unix.edu.sollentuna.se
Reply-To: assembly-86@lists.ticalc.org


In a message dated 10/7/98 16:20:24 Eastern Daylight Time,
adamcsmith@hotmail.com writes:

> how do you get a variable from the keypad and store it in a reg


there are two main ways (others such as reading the port also work):

call _getkey		;enter low power mode until a key is pressed
					;contrast changing supported, 2nd and alpha not detected,
					;and APD supported
					;[sqrt]key can interfere with

call GET_KEY		;drains batteries
					;detects all keys
					;[sqrt]key doesn't interfere
					;doesn't wait for a keypress in order to return

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