NetNews Usenet Archive 1992 #18/NN_1992_18.iso/spool/comp/sys/atari/st/12537

Internet Message Format | 1992-08-19 | 1.9 KB

Path: sparky!uunet!gumby!wupost!usc!chaph.usc.edu!news
From: [e-mail] (Juxtaposer)
Newsgroups: comp.sys.atari.st
Subject: Re: Falcon Resolution, Audio Sampling
Date: 19 Aug 1992 14:19:59 -0700
Organization: University of Southern California, Los Angeles, CA
Lines: 32
Message-ID: <[e-mail]>
References: <[e-mail]> <[e-mail]>
NNTP-Posting-Host: aludra.usc.edu

In article <[e-mail]> [e-mail] (V.G.J.M. Stoks) writes:
[stuff deleted]
>at once, so there has to be room for them on screen. Anyway, I think I
>remember reading somewhere that a programmable overscan will be built
>in, and that the Falcon could easily (and cheaply) be upgraded to about
>900x1200. That sounds more like it, huh? Problem Is, monitors above 768x1024
>rapidly become unaffordable (at least color monitors do). BTW, if I
[stuff deleted]

    Sorry to tell you this, but overscan doesn't work that way.  According
to the post from the interview with Sam T., the overscan will give you around
732x400 (I believe - I deleted the article) with overscan in the 640x400 mode.
Overscan just makes the left/right boarders disappear - basically it starts
early/delays the Hblank signal so that you get more pixels/scan line (horiz.
line on monitor).  It does not change the basic output frequency which is the
big factor in determining screen Resolution (1024x768 needs a higher display
signal frequency than a 640x400 - the 640x400 is just a "safe" size for the
frequency of the signal, with margins for error (the borders) to keep from
accidentally displaying over the rest of the screen, and to give the monitor
time to "hide" its video gun as it aims it from one side of the screen to the
other to get to the next scan line).  So, unless you get a video card that
is able to output a higher frequency for the larger screens, 732x400 is gonna
be your max size.

>
>Sander SToks,
>[e-mail]

-Mike