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From: eric@mks.com (Eric Gisin)
Newsgroups: comp.sys.ibm.pc
Subject: safe to use IBM VGA monitor in 800x600 mode?
Message-ID: <1990Jan23.211547.3559@mks.com>
Date: 23 Jan 90 21:15:47 GMT
Organization: Mortice Kern Systems Inc., Waterloo, Ontario, CANADA
Lines: 10

A recent article mentioned that most IBM VGA monitors
will work in 800x600 mode. So I tryed it with our colour IBM monitor
and an Orchid VGA, and it worked except for the loss of a few lines
at the top and bottom.

But I'm wondering if this is safe to do. Most VGA cards use
a horizontal frequency higher than the standard 31.5 kHz in this mode.
Orchid uses 35.5 or 37.24, for example.
I thought it was not safe to change the horizontal frequency
on fixed frequency monitors.