Re: A86: Someone help me?

To: assembly-86@lists.ticalc.org
Subject: Re: A86: Someone help me?
From: rabidcow@juno.com (Joshua J Seagoe)
Date: Sat, 12 Dec 1998 08:43:10 -0800
Delivered-To: assembly-86-outgoing@towerguard.unix.edu.sollentuna.se
Reply-To: assembly-86@lists.ticalc.org

;hl->sprite
;de->place on screen, like $fc00

psprite24:
 ld b,24	;24 lines
psprite24a:
 ldi		;move 1 byte (8 pixels)
 ldi		;2 bytes (16 pixels)
 ldi		;3 bytes (24 pixels)
 push de
 ld de,$10-3	;go to next line on screen
 add hl,de
 pop de
 djnz pspritea ;do the other lines
 ret

ldi moves 1 byte from (hl) to (de) and increments hl and de

the sprite will be raw data (no size):
 .db %00000000,%00000000,%00000000 ;first line
 .db %00000000,%00000000,%00000000 ;second line
...

to calculate de, use $fc00+$0010*row+col.  there are 16 columns like
this, one every 8 pixels.  if you want to be able to place the sprite
anywhere it gets tricky.  ask one of the putsprite wizards about it.

-josh

On Fri, 11 Dec 1998 22:56:21 -0600 James Tyra <mox1@ix.netcom.com>
writes:
>
>Ok I have a question. Can someone make me a sprite rouine that will 
>put a 24x24
>sprite on the screen. It doesn't have to be fancy at all. just simply 
>to display
>the sprite.
>Thanks
>
>
>
>

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