Re: A83: Need a vertical clipping AND sprite routine

To: assembly-83@lists.ticalc.org
Subject: Re: A83: Need a vertical clipping AND sprite routine
From: "D Weiss" <dwedit@hotmail.com>
Date: Mon, 19 Feb 2001 18:09:06 -0600
Reply-To: assembly-83@lists.ticalc.org


um...INVERTING SLOW!  Besides, I already have the routine written...  
(modified Crashman's one)

>From: "David Phillips" <david@acz.org>
>Reply-To: assembly-83@lists.ticalc.org
>To: <assembly-83@lists.ticalc.org>
>Subject: Re: A83: Need a vertical clipping AND sprite routine
>Date: Mon, 19 Feb 2001 14:56:09 -0700
>
>
>Maybe you could try inverting the screen at the end, as you're copying the
>double buffer?
>
> > Well, I needed an AND routine because I'm drawing white sprites onto a
>black
> > background, and XORing causes 2 sprites to become invisible if they take
>the
> > same space.  Drawing white sprites onto a dark backround allows a fast
> > moving game on lower contrast (lower batteries).
>
>
>

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