[A86] Re: The f'n 86 screen

To: assembly-86@lists.ticalc.org
Subject: [A86] Re: The f'n 86 screen
From: "Cavan Carroll" <cavanc@hotmail.com>
Date: Sun, 30 Sep 2001 08:40:30 -0700
Reply-To: assembly-86@lists.ticalc.org

It's all about the timing...
I'd suggest you try the following:
1) put the sprite at it's initial location
2) copy that part of video mem to another location (to preserve the 
backround image)
3) 'or' the sprite to it's location
4) run other code...
5) copy the preserved vid mem back
6) repeat steps 2-5
If you do it right, this way will work great.
But of course, it all depends on what you are trying to accomplish ;)


Cavan



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>In stead of clearing the screen each time then writing new sprites try
>writing the new sprite over the old sprite then erasing the old sprite, the
>code may be longer but the human brain will see a continus moving image
>insted of a flickering one.
>
>
>


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