Re: A83: inversing the screen

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Re: A83: inversing the screen

To: assembly-83@lists.ticalc.org
Subject: Re: A83: inversing the screen
From: Harper Maddox <gte172i@prism.gatech.edu>
Date: Sun, 18 Feb 2001 13:59:26 -0500
In-Reply-To: <20010218183105.40453.qmail@web9107.mail.yahoo.com>
Reply-To: assembly-83@lists.ticalc.org


invertScreen:
  ld hl,plotsscreen
  ld bc,767
invertLoop:
  ld a,255
  xor (hl)
  ld (hl),a
  dec c
  jr nz,invertLoop
  djnz invertLoop
  ret


At 10:31 AM 2/18/01 -0800, you wrote:
>How do I inverse the entire screen?
>
>
>
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References:

A83: inversing the screen

From: Jeff Ruud <pyroboy_04@yahoo.com>