Subject: Re: PCI types & compatibility
To: Charles M. Hannum <abuse@spamalicious.com>
From: Manuel Bouyer <bouyer@antioche.eu.org>
List: port-macppc
Date: 07/02/2004 23:17:51
On Fri, Jul 02, 2004 at 08:08:09PM +0000, Charles M. Hannum wrote:
> > 33 MHz.
> 
> Actually 33, and not 30 or 25 like some early PCI PCs?  It *does* make a 
> difference here.

I'm not sure. As far as I know, all IDE controller faster than Ultra/33 have
their own local clock.
For the Promise 133TX2v2, it doens't even have registers to program the speed
of the IDE bus: it snoops the ATA registers for the SET FEATURE command.

-- 
Manuel Bouyer <bouyer@antioche.eu.org>
     NetBSD: 26 ans d'experience feront toujours la difference
--