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Date:      Fri, 05 Nov 1999 13:18:20 +1030 (CST)
From:      "Daniel O'Connor" <doconnor@gsoft.com.au>
To:        Amancio Hasty <hasty@rah.star-gate.com>
Cc:        current@FreeBSD.ORG, (Kazutaka YOKOTA) <yokota@zodiac.mech.utsunomiya-u.ac.jp>, Mike Smith <mike@smith.net.au>
Subject:   Re: vga driver and signal
Message-ID:  <XFMail.991105131820.doconnor@gsoft.com.au>
In-Reply-To: <199911050241.SAA50513@rah.star-gate.com>

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On 05-Nov-99 Amancio Hasty wrote:
>  Your idea sounds intriguing . How should we wired the KLD to 
>  the X server? or how will the KLD inform the X server that it
>  has received a vertical retrace interrupt .

It depends what you wanted to do, but you could have the X server feed the KLD
commands to do on a vert refresh, and when it happens the commands are executed
in kernel mode, which would save you a lot of time.

Kind of complex though. Also the interrupt latency problem is still there.

---
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
  -- Andrew Tanenbaum


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