2001-04-03 07:24:44

by Tim Hockin

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Subject: 66MHz PCI

All,

is it possible to detect whether a device is running at 66MHz (as opposed
to 33)? PCI defines a 66MHz capable bit, but not a 66MHz enabled bit. We
have a silly device that seems to need to know what it's bus speed is, but
have no way to tell from software (that I know of).

So, pray tell -- is there a way to figure it out?


2001-04-03 08:23:40

by Martin Mares

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Subject: Re: 66MHz PCI

Hello!

> is it possible to detect whether a device is running at 66MHz (as opposed
> to 33)? PCI defines a 66MHz capable bit, but not a 66MHz enabled bit. We
> have a silly device that seems to need to know what it's bus speed is, but
> have no way to tell from software (that I know of).
>
> So, pray tell -- is there a way to figure it out?

There is, but unfortunately it's host bridge specific.

Have a nice fortnight
--
Martin `MJ' Mares <[email protected]> <[email protected]> http://atrey.karlin.mff.cuni.cz/~mj/
If a train station is where the train stops, what is a work station?