Fw: A83: Re: scroll text (for Linus)

To: "Assembly 83 List" <assembly-83@lists.ticalc.org>
Subject: Fw: A83: Re: scroll text (for Linus)
From: "James Matthews" <matthews@tkb.att.ne.jp>
Date: Fri, 17 Jul 1998 02:14:27 +0900
Delivered-To: assembly-83-outgoing@towerguard.unix.edu.sollentuna.se
Reply-To: assembly-83@lists.ticalc.org


Olle's post was this:

----------
> From: Olle Hedman <oh@hem.passagen.se>
> To: assembly-83@lists.ticalc.org
> Subject: Re: A83: Re: scroll text
> Date: Tuesday, July 14, 1998 11:33 PM
> 
> 
> At 09:17 1998-07-14 -0500, you wrote:
> >
> >i made a new version of the routine below...
> >
> >-Harper Maddox
> >
> >jerky@ebicom.net
> >IRC nick: Geori
> >ICQ: 1214597
> >
> >-----Original Message-----
> >From: Chris Hiszpanski <mecad@scv.net>
> >To: assembly digest <assembly-83-digest@lists.ticalc.org>
> >Date: Monday, July 13, 1998 10:43 PM
> >Subject: A83: scroll text
> >
> >
> >>
> >>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
> 
> The problem is probably that _vputs is fuckin a-reg up...
> try pushing af before the call and popping it after...
> 
> and to you other..  he _is_ using the B for the djnz..  the ld a,96 sets
> the start-col in his progg..  the ld b,70 is the load for djnz..  he
> doesn't want a delay the first time...
> 
> and the cp 0 or or a instructions are pointless..  the dec-instructions
> sets the zeroflag if you reach 0..  so you dont need to cp 0 or or a or
> something...
> 
> //Olle

Follow-Ups:

Re: Fw: A83: Re: scroll text (for Linus)

From: Linus Akesson <lairfight@softhome.net>