Re: PCI code: why need outb (0x01, 0xCFB); ?

H. Peter Anvin
2003-01-08T18:44:11Z

Followup to: <F87sTOHYNhMwqvbLaKL0001615a@hotmail.com>
By author: "fretre lewis" <fretre3618@hotmail.com>
In newsgroup: linux.dev.kernel

> 1. which device is at port address 0xCFB?

Hopefully none.

> 2. what is meaning of the writing operation "outb (0x01, 0xCFB);" for THIS
> device?, it'seem that PCI spec v2.0 not say anything about it?

It's trying to verify that the PCI northbridge does *NOT* respond to
this (byte-wide) reference.

-hpa
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