Re: A83: A routine to move data...

To: assembly-83@lists.ticalc.org
Subject: Re: A83: A routine to move data...
From: "Revenant" <revenant_1@hotmail.com>
Date: Sat, 25 Jul 1998 13:22:01 PDT
Delivered-To: assembly-83-outgoing@towerguard.unix.edu.sollentuna.se
Reply-To: assembly-83@lists.ticalc.org


Why not just do this?

   ld hl,start			;Start of data

   ld de,moveto			;Where to put it

   ld bc,768			;Bytes to copy

   ldir				;Copy bytes

Revenant

>
>Does this work??
>
>SOURCE:
>;MOVEIT.Z80
>;by: Chris Watford
>;copying data plus deleting the old data
>;usage: moving data
>
>;input:
>;bc= Start of old data
>;de= End of old data
>;hl= Where to put it
>
>start:
> push bc
> push de
> push hl
>;I am getting the lenght of data
> ld hl,de-bc
> ld (statvars),hl
>;statvars now contains the length of the data
> pop hl
> pop de
> pop bc
> ld de,(statvars)
> ld (statvars+2),0
>loop:
> sub (statvars),(statvars+2) ;is the operation done??
> jp z,the_end
> ld (hl),(bc) ;copy old data
> ld (bc),0000h ;delete old data
> inc (statvars+2) ;increment the counter
> inc (bc)  ;
> inc (bc)  ;move to the next mem location
> jp loop  ;lets do more deleting and moving
>the_end:
> ret
>
>
>



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Re: A83: A routine to move data...

From: Phelan Wolf <gwatford@worldnet.att.net>