Path: utzoo!utgpu!watmath!clyde!att!pacbell!ames!oliveb!pyramid!prls!philabs!pwa-b!hgcvax!network
From: network@hgcvax.uucp (craig chaiken)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Paradise VGA Plus undocumented video modes
Summary: I have a an assembly language routine to access
	 640x409x256 colors on the Paradise VGA Plus.
Message-ID: <685@hgcvax.uucp>
Date: 18 Dec 88 07:45:01 GMT
References: <247@shockeye.UUCP> <418@darth.UUCP>
Organization: Hartford Graduate Center, Hatrford, CT.
Lines: 18

> I have the Paradise VGA 16 plus and i didn't know about this either but...
> Let's think about this for a minute.  These boards (8 and 16) come with 
> 256k of ram on board.  To get 256 colors requires 8 bits (a byte). 
> If we multiply the pixel counts 640 x 480 = 307200 (or 300K).  It looks to me
> like we are short 56k from filling the screen.  If you devide 256K (262144)
> by 640 lines we can get 409 lines with 256 colors.  And lo and behold there

     I wrote an assembly language routine which allows me to address 
640x409x256 colors on my Paradise VGA Plus.  While the display is beautiful
once the drawing is done, it suffers from terrible snow effects whenever
the display is updated.  In others words, the quality is unacceptable.
I imagine THAT is the reason Paradise chose not to document it.  In any
case, I can post my routine if anyone is willing to trade quality for
resolution.

Craig Chaiken
Hartford Graduate Center
Computing Services