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From: bobl@pro-graphics.cts.com (Bob Lindabury)
Newsgroups: comp.sys.amiga
Subject: Re: Hi-res graphics ??
Message-ID: <1029@crash.cts.com>
Date: 3 Jan 90 01:16:08 GMT
Sender: root@crash.cts.com
Lines: 41

In-Reply-To: message from lphillips@lpami.wimsey.bc.ca

>> Hmm..that's very strange.  Seems to me that you can't get 16 colors in
>> high-resolution severe overscan even if you had 8 meg of fast ram.  It's the
>> chip ram that limits your color palette I believe (I may be wrong).  As soon
>> as I installed my fatter Agnus chip, I could then get the full 16 colors in
>> high-res severe overscan.  I couldn't previously even though I had a 3 meg
>> machine.
> 
> The Amiga has always been capable of 16 colours in 640*400, including the
> oerscanned varieties. I run 704*470, and had no trouble getting 16 colours
> displayed before upgrading to the obese one.  When you speak of not being able
> to get 16 colours, you are probably speaking of a particular program, and if
> so, you may well have been suffering a memory crunch due to things being run at
> the same time.  Remember, everything running in the background will eat some
> memory, including things like disk drivers for both floppy and hard drives.
> Additionally, you may have had sufficient memory but it may have been
> fragmented because of the order in which some things were run while you booted.
> 
> -larry

Thanks for the info on the hi-res overscan capabilities of the Amiga.  I knew
it was a chip memory problem and it didn't click that my application was also
using up the chip memory making 16 colors impossible.

I think that my application (DpaintIII) is a standard and I would have to say
that if you DO NOT have a new fatter Agnus, you will still not be able to
obtain 16 colors running Dpaint III in severe overscan even if you have an 8
meg machine.  Just so people know that the defacto standard painting program
will not allow 16 colors in Hi-res overscan unless you do install the new
Agnus.  People may get the idea that they CAN paint in 16 colors when they
actually can't unless they have an application that uses minimal chip mem.

-- Bob
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