Message-ID:	<368509BA.2B73FBC1@gmx.de>
Date:	Sat, 26 Dec 1998 17:07:22 +0100
From:	Christian Hofrichter <ChristianHofrichter AT gmx DOT de>
X-Mailer:	Mozilla 4.5 [de]C-CCK-MCD QXW03201 (Win95; I)
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To:	djgpp AT delorie DOT com
Subject:	Where to read signal for vertical retrace ?
Reply-To:	djgpp AT delorie DOT com

To avoid flickering on my monitor when doing graphic operations in the
vesa-modes, I want know from which port I have to read the signal for
the vertical retrace.
I want to know when the retrace starts and it would be nice if I knew
when it ends.
As this isn't a part of the vesa-interface (functions) this can cause
problems on some graphic-cards which are not completely VGA-compatible,
couldn't it ?
So what can I do ?

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