Re: A86: Check if 2nd is pressed using _getkey

To: assembly-86@lists.ticalc.org
Subject: Re: A86: Check if 2nd is pressed using _getkey
From: Tercero <tercero@busprod.com>
Date: Fri, 14 Aug 1998 08:40:08 -0700
Delivered-To: assembly-86-outgoing@towerguard.unix.edu.sollentuna.se
Organization: BPS Internet
References: <19980814093227.8036.qmail@hotmail.com>
Reply-To: assembly-86@lists.ticalc.org


Andreas Finne wrote:
> How do you check if 2nd is pressed when using _getkey?

You apparently can't.  I ran this prog to find out but
nothing came up.  The prog waits for you to press a key
and then displays it's decimal scan code.  I have ROM 1.2,
If you have a higher rom you might try it to see if 2nd
does have a scan code.  Otherwise just read the port.  It's
infinitely faster than _getkey.

AsmPrgm
CDAA55		;call _getkey
2600		;ld h, 0
6F		;ld l, a
AF		;xor a
CD334A		;call _DispAHL (I don't know the exact name of this call)
C9		;ret

-- 
Tercero	 --  Email: mailto:tercero@busprod.com

"The stone the builders rejected has become the capstone;"
			--Psalms 118:22
"Everyone who falls on that stone will be broken to pieces,
but he on whom it falls will be crushed."
			--Luke 20:18

Follow-Ups:

Re: A86: Check if 2nd is pressed using _getkey

From: Pat Milheron <pmilheron@ti.com>

References:

A86: Check if 2nd is pressed using _getkey

From: "Andreas Finne" <a_finne@hotmail.com>