A83: Re: scroll text

To: <assembly-83@lists.ticalc.org>
Subject: A83: Re: scroll text
From: "James Matthews" <matthews@tkb.att.ne.jp>
Date: Tue, 14 Jul 1998 13:03:55 +0900
Delivered-To: assembly-83-outgoing@towerguard.unix.edu.sollentuna.se
Reply-To: assembly-83@lists.ticalc.org


No wait...
wtf...what's that "ld a,96" for?  To use DJNZ you need the B register.

For example:

ld b,96
DELAY:
  halt
  djnz DELAY

That would call HALT 96 times.

James.
____________________

James Matthews.
E-mail (family):    matthews@tkb.att.ne.jp
E-mail (private):  james_matthews@hotmail.com

Homepage:  http://home.att.ne.jp/gold/tomcat21/index.html
ICQ:  7413754
____________________________________

----------
> From: Chris Hiszpanski <mecad@scv.net>
> To: assembly digest <assembly-83-digest@lists.ticalc.org>
> Subject: A83: scroll text
> Date: Tuesday, July 14, 1998 12:48 PM
> 
> 
> I tried this routine I partialy made but all I get is a blank screen. No
> text appears. What am I doing wrong?
> 
>   ld a,96
> 
> DELAY:
>   halt
>   djnz DELAY  
>  
> DISP:
>   ld hl,53
>   ld (penrow),hl
>   ld (pencol),a
>   ld hl,ONIT
>   call _vputs
>   dec a
>   cp 0
>   jr z,FIN
>   ld b,70
>   jr DELAY 
> 
> ONIT:
>  .db "**Under Development**",0

Follow-Ups:

Re: A83: Re: scroll text

From: Linus Akesson <lairfight@softhome.net>