Re: A89: Chun-Li: a Chinese Ninja Warrior (this might help)

To: assembly-89@lists.ticalc.org
Subject: Re: A89: Chun-Li: a Chinese Ninja Warrior (this might help)
From: Olle Hedman <oh@hem.passagen.se>
Date: Wed, 17 Mar 1999 12:29:49 +0100
Delivered-To: assembly-89-outgoing@towerguard.unix.edu.sollentuna.se
Delivered-To: assembly-89@lists.ticalc.org
References: <5e16d49f.36eee9a1@aol.com> <36EF493F.1817D9C4@mediabase.premrad.com>
Reply-To: assembly-89@lists.ticalc.org

It would be the exact same amount of data needed to be changed. 
Do you at all understand how grayscale is done?
It is done by switching the place of the graphicmemory som alot of times per
second. (50-100, I dont remember and have no time checking it up now)
this is done by writeing a word to a memory mapped port. (very fast)
Any other system (like yours here) would require either new hardware or that you
moved every second bit to a new place everytime you want to change plane. This
is not possible due to speed.

//Olle

Rick DoGG wrote:
> 
> You COULD do it in a bitmap fashion (ie a different # for each shade)
> but this would require you to write your own display routines.  However,
> in a game like you're planning on doing this method would be much better
> than the current one, because you would only need one sprite for each
> frame as opposed to 4.  This would also reduce flickering, because only
> some of the pixels are being changed instead of all of them.
> 
> RD

References:

Re: A89: Chun-Li: a Chinese Ninja Warrior (not help)

From: Jer2665@aol.com

Re: A89: Chun-Li: a Chinese Ninja Warrior (this might help)

From: Rick DoGG <ricky@mediabase.premrad.com>