What video signals do the K-Mart ST's output???

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3 total messages Started by Warren Long Tue, 14 Jan 1986 15:55

#2024

Author: Warren Long
Date: Tue, 14 Jan 1986 15:55

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Tomorrow is the day the K-Mart is meant to start selling ST's.
I was all set to get my ST, and then hesitated because of
being forced to choose colour OR high res.

The problem is:
when the ST boots, it checks to see if it is using a color
monitor.  If it is, then the ability to enter high-res mode is
disabled.  This annoys me.  Even if the figures are going to be
blurry, I would like to be able to use that mode.  Part 2 of the
problem is that I feel that one of the ST's big advantages over the
MAC is that it is a colour machine.  But, I can't have both.
Even if I did buy both the colour and monochrome monitors, I can't
have both of them plugged in at once.  I have to choose one or the
other.

Do I have all this informatation correct?????

A possible solution is/are the K-Mart ST's.  From what I hear, they
are going to also include an RF modulator.  The crux of the matter
is:  Will they also include all the hardware and connections to
drive the monitors?  If this is so, then I can buy my K-Mart ST,
plug in my colour TV, and buy the 70Hz monochrome that looks so
wonderful.  I get the best of everything.

So, as soon as somebody actually sees one of these beasties, or has 
an idea as to its capabilities, could you please post it to the net?

			       Thanks,
			       Warren Long
			       University of Saskatchewan
			       CANADA

Re: What video signals do the K-Mart ST's output???

#2088

Author: info-atari
Date: Thu, 16 Jan 1986 16:07

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Given an RF modulator output, it isn't too hard to add a composite output
(which is basically the signal fed to the RF modulator input).
Making your own RGB signal is probably also possible, but requires much more
thought/design effort.  If anybody needs engineering assistance on this, I can
probably talk a friend of mine (who is a video expert) into helping out.

					-John Sangster
					jhs at mitre-bedford.arpa

Re: What video signals do the K-Mart ST'

#2143

Author: hmm
Date: Fri, 17 Jan 1986 10:24

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> A possible solution is/are the K-Mart ST's.  From what I hear, they
> are going to also include an RF modulator.  The crux of the matter
> is:  Will they also include all the hardware and connections to
> drive the monitors?  If this is so, then I can buy my K-Mart ST,
> plug in my colour TV, and buy the 70Hz monochrome that looks so
> wonderful.  I get the best of everything.

This won't work because the frame and scanline frequencies are totally
different.  Your TV uses 60 Hz frame frequency, while the monochrome
monitor has 70 Hz.  This is only a small difference, but the difference
in the scan line frequencies is too big.  In monochrome mode, the scan
line frequency is about twice as high as in color mode.

So, you get one or the other, but not both at the same time.  I would
highly recommend the monochrome monitor, it is much better than everything
I have seen before in this price range.  The color mode is not too hot, I
could not work more than one hour in front of the screen...  And your TV
will probably be worse than our color monitor, which means that you are
forced to use low resolution if you want to decipher text on the screen.

	Hans-Martin Mosner (16 hours and no eye strain)
	University of Dortmund
	Germany

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