[comp.sys.atari.st] Thomson monitor in high resolution

VOGT@HGRRUG5.BITNET.UUCP (03/31/87)

Recently I purchased an Atari 1040 with Thomson colour monitor, with which
to my surprise, I can't obtain high resolution monochrome display.
After talking to one of my collegues we came to the conclusion that is
should be possible to make a (switchable) modification to the Thomson,
so that the Atari can be fooled to think the Thomson is a monochrome
display, thus giving high resolution output.

Is the anyone that can answer the following questions?:

Has anyone ever tried this before?
Will it work?
Will we get problem with the different bandwiths (12 ans 20 MHz)?
Can the bandwith for monochrome output (20 MHz) be reduced to 12 MHz
inside the Thomson?

Answers please to

Herman F. Vogt
Earn/Bitnet: VOGT@HGRRUG5

Thanks in advance

HFV

bob@wiley.UUCP (04/02/87)

You have two problems to address. The first which you have obviously
thought of is the increased bandwidth required for the monochrome display.
Second, the monochrome display has a 70Hz scan rate. This is different
than it is for the color display (either 50 or 60Hz, I can't remember).
If you can adjust the scan rate of the Thomson monitor, then you
should be able accomplish your goal.

		Good Luck,
		Bob Amstadt

		trwrb.uucp!wiley!bob
		csvax.caltech.edu!wiley!bob