Re: A86: Re: Grayscale

To: assembly-86@lists.ticalc.org
Subject: Re: A86: Re: Grayscale
From: Kirk Meyer <kirk008@ibm.net>
Date: Sat, 08 Aug 1998 13:11:16 -0600
Delivered-To: assembly-86-outgoing@towerguard.unix.edu.sollentuna.se
References: <003401bdc2fc$0317f210$08b456cf@mej.dogtech.com>
Reply-To: assembly-86@lists.ticalc.org


$CA00 is not optional... the 0 port cannot point to memory below $C000.
I use $F600 for grayscale and/or double-buffering.

Matt Johnson wrote:
> 
>     Is there any other way to do 4-level grayscale than writing one picture
> to $fc00 and another one to $ca00 and using port 0?
>     Jbrett
> 
>     No. But there is a way to do grayscale pictures without using
> interrupts, but standard grayscale for games and stuff uses interrupts.. IM
> 1 or IM 2 does not matter. And.. $CA00 is also optional, there is some free
> ram on Page 1 you can use.
> 
>     Later,
>         Matt

-- 

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References:

A86: Re: Grayscale

From: "Matt Johnson" <matt2000@gte.net>

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