Re: A85: @!#%! Code Part 2

To: assembly-85@lists.ticalc.org
Subject: Re: A85: @!#%! Code Part 2
From: mgp4007@omega.uta.edu (Michael Pearce)
Date: Fri, 02 Oct 1998 02:17:19 GMT
Delivered-To: assembly-85-outgoing@towerguard.unix.edu.sollentuna.se
In-Reply-To: <75477391.36141f0a@aol.com>
References: <75477391.36141f0a@aol.com>
Reply-To: assembly-85@lists.ticalc.org


why don't you just do this:

 ld b,54		; 9 rows by 6 columns is 54 elements
 ld hl,(ARRAY)
Loop:
 ld (hl),0
 inc hl
 djnz Loop

or if you *had* to do it multi-dimensionally:

 ld hl,(ARRAY)
 ld c,9			; 9 rows
OuterLoop:
 ld b,6			; 6 cols
InnerLoop:
 ld (hl),0
 inc hl
 djnz InnerLoop
 dec c			; one less row
 jr nz,OuterLoop
 
-mike pearce

On Thu, 1 Oct 1998 20:32:10 EDT, you wrote:

>
>Here's more of my seemingly defective source code.  I am trying to initialize
>a portion of memory to use as a 2 dimensional array with all zeros, but it
>crashes the calc all the time.
>
>ARRAY = TEXT_MEM+5
>
> call CLEARLCD
> ld a,1
> ld (CUR_POS),a
>Loop:
> ld b,9
> ld hl,(ARRAY)
> ld a,b
> push bc
> ld b,0
> ld c,a
> add hl,bc
> pop bc
> ld (hl),0
> djnz Loop
>Loop2:
> ld b,6
> ld hl,(ARRAY)
> push bc
> ld b,0
> ld c,9
> add hl,bc
> pop bc
> ld c,b
> push bc
> ld b,0
> add hl,bc
> ld (hl),0
> djnz Loop2 
>
>-Gray
>

References:

A85: @!#%! Code Part 2

From: PXGray@aol.com