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From: hjalmar@cbmswe.UUCP (Peter Hjalmarsson)
Newsgroups: comp.unix.amiga
Subject: Re: Video resolutions
Message-ID: <258@cbmswe.UUCP>
Date: 19 May 91 10:20:16 GMT
References: <1991May20.165654.10048@digibd.com> <434a32w161w@nstar.rn.com>
Reply-To: hjalmar@cbmswe.UUCP (Peter Hjalmarsson)
Organization: Commodore Sweden
Lines: 55

In article <434a32w161w@nstar.rn.com> tbissett@nstar.rn.com (Travis Bissett) writes:
>rhealey@digibd.com (Rob Healey) writes:
>
>> 
>> 	Is it possible to get the Amiga video chips to do 800x600 monochrome?
>> 	How about 4 or 16 color? I'd like to be able to have at least 512
>> 	points in the Y direction under X with stock hardware. I suppose
>> 	I'll just end up growing spider webs till the A2410 is available. B^(.
>> 
>
>It is possible to get 1008x800 mono from the Amiga video chips (A1000 thru 
>A2000 old) if you use the Viking Moniterm. Sorry...don't recall the CBM 
>designation for that monitor. It has special circuitry to grab the screen in 
>four pieces and paste it back together into a display. 

"Commodores designation" is the A2024. It is not exactly the same monitor
however. While the Moniterm Viking is full-size 19", the A2024 is only 14".
Much lower price, though, about the same as a VGA screen.

The internal workings is not important, what is important however is that the
monitor will give you 1008x1024 (or 1008x800 in NTSC) in four gray scales.

If all you want is 512 pixels in the Y direction you could try something else:
Switch your A3000 to PAL with the PAL/NTSC jumper. You would probably also
have to edit some files under UNIX to get the OS to understand that you have
switched settings. That will give you 640x512 pixels in X.

>
>Of course, you also must know by now that the latest Denise chip -- the one 
>in the A3000 -- when working with deinterlacer and a multisync monitor can 
>display 4 (8?) colors up to 1200x800 (interlaced). 

Not really, it can do twice the normal horisontal resoultion, but you _must_
switch the de-interlacer off manually, and besides I dont think UNIX supports
that mode. Also, you have no use for a multi-sync in that mode.
>
>So I guess either way the answer to your questions is "yes".

Rather it is "Yes, but..."

>
>Travis -- tbissett@nstar.rn.com
>
>
>--
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Peter Hjalmarsson, Amiga Support, Commdore Sweden
{uunet|pyramid|rutgers}!cbmvax!cbmehq!cbmswe!hjalmar
Std.disclaimer: All the above is the opinion of the employee and not the
                employer.