Re: A86: Question on tile maps

To: assembly-86@lists.ticalc.org
Subject: Re: A86: Question on tile maps
From: Jimmy =?iso-8859-1?Q?M=E5rdell?= <yarin@acc.umu.se>
Date: Wed, 27 Jan 1999 22:18:08 +0100
Delivered-To: assembly-86-outgoing@towerguard.unix.edu.sollentuna.se
Delivered-To: assembly-86@lists.ticalc.org
In-Reply-To: <000c01be4a2b$ca125200$25f5928b@david>
Reply-To: assembly-86@lists.ticalc.org

At 13:32 1999-01-27 -0600, you wrote:
>
>I've found that instead of using a SLOW sprite routine that saves the
>background, it's almost always much faster and easier to just save the
>background each frame into a secondary buffer.  I call it "tripple
>buffering".  You have your Video Ram or Video Buffer, Virtual Screen or
>Double Buffer, and you have the Map Screen or Map Buffer.

I believe the original reason I didn't use this method was that Sqrxz
was first made for the 85, where this option would require an additonal
1k free memory.

Also, the sprite routine doesn't get that much slower...

//Jimmy Mårdell

E-mail: yarin@acc.umu.se
Homepage: http://www.acc.umu.se/~yarin/

References:

Re: A86: Question on tile maps

From: "David Phillips" <david@acz.org>

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