Re: A83: Re: Re: inverse sprite

To: assembly-83@lists.ticalc.org
Subject: Re: A83: Re: Re: inverse sprite
From: Stefan Lennartsson <stefan@infinity.hemmet.s-hem.chalmers.se>
Date: Wed, 4 Nov 1998 12:07:49 +0100 (CET)
Delivered-To: assembly-83-outgoing@towerguard.unix.edu.sollentuna.se
In-Reply-To: <Pine.LNX.3.96.981104120324.25610A-100000@eliN.hemmet.s-hem.chalmers.se>
Reply-To: assembly-83@lists.ticalc.org


sorry, of course there should be a

	ld	(hl),a

	too

/Stefan

On Wed, 4 Nov 1998, Stefan Lennartsson wrote:

> 
> Use a routine like this
> 
> 	ld	b,8
> 	ld	hl,sprite
> loop:
> 	ld	a,(hl)
> 	cpl		; If I'm not wrong this inverts a byte
> 	inc	hl
> 	djnz	loop
> 
> /Stefan
> 
> On Tue, 3 Nov 1998 Jkhum98@aol.com wrote:
> 
> > 
> > 
> > In a message dated 11/03/98 8:48:19 PM, electrum@tfs.net writes:
> > 
> > >Then you add something like this:
> > >
> > >xor $ff      ; flip all the bits
> > 
> > Ok, maybe Im wrong about this, but isnt that command on 1 byte? that would
> > only XOR the top line of your 8x8 sprite wouldnt it...?
> > 															--Jason K.
> > 
> 
>

References:

Re: A83: Re: Re: inverse sprite

From: Stefan Lennartsson <stefan@infinity.hemmet.s-hem.chalmers.se>

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