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To: Narvi <narvi@haldjas.folklore.ee>
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Subject: Re: performance puzzler 
In-reply-to: Your message of "Sun, 02 Feb 1997 20:20:55 +0200."
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Date: Mon, 03 Feb 1997 00:33:47 -0500
From: "Gary L. Grebus" <glg@balrog.k8lt.ampr.org>
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> Where did I read about 66Mhz revision/mode for PCI? Was it in a dream or
> just a "not supported by anybody yet" possibility as is the 64bit card
> width. Or was it all just a dream or erroneus news article?
> 

Revision 2.0 of the PCI Specification added both 64 bit wide and 66 MHz versions of the bus.  I'm not aware of any shipping 66 MHz PCI, but most of the current Digital Alpha systems (and I think some 3rd party Alpha motherboards) include 64 bit slots.  

FWIW, the spec requires that 64 bit cards work when plugged into 32 bit slots, and 32 bit cards work when plugged into 64 bit slots.

Regards,

/gary

Gary L. Grebus		Home:  glg@k8lt.ampr.org
Brookline, NH           Work:  grebus@zk3.dec.com