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From: breuel@h-sc1.UUCP (thomas breuel)
Newsgroups: net.micro.amiga
Subject: Re: interlace mode
Message-ID: <877@h-sc1.UUCP>
Date: Sat, 18-Jan-86 13:05:46 EST
Article-I.D.: h-sc1.877
Posted: Sat Jan 18 13:05:46 1986
Date-Received: Mon, 20-Jan-86 05:48:50 EST
References: <570@amiga.amiga.UUCP>
Organization: Harvard Univ. Science Center
Lines: 37

|	There has been a lot of talk (and flak) about the apparent
|'unusable' interlace mode of the AMIGA. I have seen a 640 x 400
|screen that didn't seem to flicker at all and looked dynamite!
|BUT the programmer did use a trick to accomplish this feat.
|
|	The trick is to plot a pixel ON and ABOVE the line where the
|pixel is to be placed. This still results in an effective resolution
|of 400 lines BUT reduces the flicker to almost zilch. I saw this
|implemented on a terminal program and a graphics display and they
|both looked great on a 1080 monitor. Give it a try, the results
|may surprize you!
|
|	Regards, David Berezowski (CBM/AMIGA East Coast)

Sure, if you use 640x400 as a 640x200 mode, then you won't see
any flicker, you won't have any higher resolution either, though,
and you'll waste a lot of memory.

The only thing I don't like about the AMIGA (apart from its
price) is the fact that it doesn't manage to produce 640x400
graphics. I have seen several demos in high-resolution mode,
and the flicker is really unbearable for any real work.

WHAT I WOULD LIKE TO KNOW IS: is Commodore/AMIGA planning on
releasing a version of the AMIGA in which this problem has
been fixed (e.g. in which the monitor can be run at either
60Hz or 70Hz)? Is there a hardware patch that can be applied
to current machines to solve the problem?

I find that for serious use as a desktop workstation,
a resolution of 640x200 pixels is just not enough.
The Mac is just barely usable (slightly lower horizontal
resolution and larger vertical resolution), and the LISA is
probably the only low-end work-station on which you can afford to
have two reasonably sized windows open at the same time.

						Thomas.