Re: A86: GET_KEY vs ports

To: assembly-86@lists.ticalc.org
Subject: Re: A86: GET_KEY vs ports
From: David Phillips <electrum@tfs.net>
Date: Sun, 27 Sep 1998 20:45:02 -0500
Delivered-To: assembly-86-outgoing@towerguard.unix.edu.sollentuna.se
Reply-To: assembly-86@lists.ticalc.org

That all depends on what you want to do.  If you really need to save the
few bytes, then _geykey is the way to go.  _getkey also allows apd and
stuff like that, so this maybe what you want.

However, I always use the ports in programs for a few reasons.  One is that
interrupts can be disabled and keys still work properly.  Another reason is
that _getkey only allows one key to be read at a time, whereas reading the
ports allows for about 2-4 keys at once.  This is usually necessary when
writting a game.

At 06:46 PM 9/27/98 -0700, you wrote:
>
>Is it better to read keypad input using GET_KEY or by reading the ports
>directly?
>
>Thanx,
>Dave VanEe
>

--
David Phillips
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