Re: A82: Greyscale Mentioned?

To: <assembly-82@lists.ticalc.org>
Subject: Re: A82: Greyscale Mentioned?
From: "Bryan Rabeler" <rabelerb@pilot.msu.edu>
Date: Wed, 28 Jul 1999 15:25:35 -0400
Delivered-To: assembly-82-outgoing@towerguard.unix.edu.sollentuna.se
Delivered-To: assembly-82@lists.ticalc.org
References: <767983bb.24d08f4d@aol.com>
Reply-To: assembly-82@lists.ticalc.org


Whats the URL to Jeremy's website?

Bryan

----- Original Message -----
From: <ADAMMAN106@aol.com>
To: <assembly-82@lists.ticalc.org>
Sent: Wednesday, July 28, 1999 12:52 PM
Subject: Re: A82: Greyscale Mentioned?


>
> In a message dated 7/28/99 1:34:19 AM Eastern Daylight Time,
Jkhum98@aol.com
> writes:
>
> > Ive read that ADAMMAN is using Greyscale for Defiance, and Jeremy is
using
> it
> >
> >  for AgentX... Would y'all mind posting any source code you have on
that?
> I
>
> Jeremy posted his source on his website.  Though I haven't really looked
at
> the source, I tried out his test programs and it seems to be better
quality
> grayscale than mine.  Sometime I will probably analyze it and see what the
> differences are, but I'm pretty sure we both use interrupt speed to vary
the
> quality of the grayscale.
>
> >  would assume the greyscale interrupt technique is very similar to what
the
> > 83
> >  can do, and I have been experimenting alot with greyscale for the past
> week,
> >
> >  and a month ago before this, yet I cant get it to be of any good
> quality...
> > I
> >  got perfect greyscale on VTI, but that means nothing since it doesnt
> Emulate
> >
> >  the hardware in any similar way... Please inform me about any new
> techniques
> >
> >  there are... :)
> >
> >  Jason_K
>
> I basically ported the interrupt stuff from the 85, and used a routine
given
> to me by Dines to put the images on the LCD.  It's not the fastest
routine,
> but it seemed to give better results than faster routines.  Then so the
> grayscale doesn't look like crap, you need to use port 4 to change the
> interrupt speeds...unfortunately the quality that different speeds give
seems
> to vary greatly on each calc, and of course battery power is a major
factor.
> Grayscale on the 82 is extremely sensitive to any changes that are made.
> I haven't even attempted to implement it into Defiance yet, and I hope and
> pray that it will work well.
>
> ~Adamman
>
>

References:

Re: A82: Greyscale Mentioned?

From: ADAMMAN106@aol.com