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From: roell@informatik.tu-muenchen.de (Thomas Roell)
Newsgroups: comp.unix.sysv386
Subject: Re: X386 - Tseng Labs ET4000-based video card question
Message-ID: <1991May31.072415.3979@Informatik.TU-Muenchen.DE>
Date: 31 May 91 07:24:15 GMT
References: <1991May29.132356.22996@solo.csci.unt.edu>
Sender: news@Informatik.TU-Muenchen.DE
Organization: Inst. fuer Informatik, Technische Univ. Muenchen, Germany
Lines: 21
In-Reply-To: jason@ponder.csci.unt.edu's message of 29 May 91 13: 23:56 GMT

>	25.175 28.322        36.000 40.000 44.900       62.000
>However, "clock ET4000" tells me that they are:
>	25.2   28.3   32.5   36.0   40.0   44.9   55.6  64.4
>
>I do not have a lot of faith in the manual because it is so poorly written
>but it seems like numbers would be hard for them to get wrong. Any comments
>or suggestions?

I would rather trust clock.exe. clock.exe just programms the videochip for
a common display mode, and the counts the time needed a horizontal frame.
Every number counted is compared to the wellknown of the 28.322 quartz.
But throught the limiation of this method only about 3 numbers are sigificant.
At higher quartzes there may be even higher errors +- 0.5. But clock.exe
definitively shows all frequencies available.

- Thomas
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