A86: Why doesn't this work?

To: <assembly-86@lists.ticalc.org>
Subject: A86: Why doesn't this work?
From: "Justin Ingersoll" <justjen@wilmington.net>
Date: Sun, 16 Aug 1998 14:17:55 -0400
Delivered-To: assembly-86-outgoing@towerguard.unix.edu.sollentuna.se
Reply-To: assembly-86@lists.ticalc.org


I'm writing a program that will eventually move something around the screen,
to learn asm. This won't work for some reason.  However a version I made
that only says Left and Right works, this works the same way, it just looks
for Up and Down too.

#include "ti86asm.inc"

.org _asm_exec_ram

 call _clrLCD
Keyloop:
 call _getkey
 dec a
 jr z,Right
 dec a
 jr z,Left
 dec a
 jr z,Up
 dec a
 jr z,Down
 jr Keyloop
Left:
 call _homeup
 ld hl,LFT
 call _puts
 jr ED
Right:
 call _homeup
 ld hl,RTE
 call _puts
 jr ED
Up:
 call _homeup
 ld hl,UPP
 call _puts
 jr ED
Down:
 call _homeup
 ld hl,DWN
 call _puts
 jr ED
LFT:
 .db "Left",0
RTE:
 .db "Right",0
UPP:
 .db "Up",0
DWN:
 .db "Down",0
ED:
.end

Thanks,
JEI

Follow-Ups:

Re: A86: Why doesn't this work?

From: Chicane <chicane@reninet.com>

Re: A86: Why doesn't this work?

From: Tercero <tercero@busprod.com>