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PCITWEAK(1)							   PCITWEAK(1)

NAME
       pcitweak	- read/write PCI config	space

SYNOPSIS
       pcitweak	-l
       pcitweak	-r PCI-ID [-b|-h] offset
       pcitweak	-w PCI-ID [-b|-h] offset value

DESCRIPTION
       Pcitweak	 is  a utility that can	be used	to examine or change registers
       in the PCI configuration	space.	On most	platforms pcitweak can only be
       run by the root user.

OPTIONS
       -l      Probe  the PCI buses and	print a	line for each detected device.
	       Each line contains the bus location (bus:device:function), chip
	       vendor/device,  card  (subsystem)  vendor/card, revision, class
	       and header type.	 All values printed are	in hexadecimal.

       -r PCI-ID
	       Read the	PCI configuration space	register at offset for the PCI
	       device  at  bus location	PCI-ID.	 PCI-ID	should be given	in the
	       form bus:device:function, with each value in  hexadecimal.   By
	       default,	a 32-bit register is read.

       -w PCI-ID
	       Write  value  to	the PCI	configuration space register at	offset
	       for the PCI device at bus location PCI-ID.   PCI-ID  should  be
	       given in	the form bus:device:function, with each	value in hexa-
	       decimal.	 By default, a 32-bit register is written.

       -b      Read or write an	8-bit value (byte).

       -h      Read or write a 16-bit value (halfword).

SEE ALSO
       scanpci(1)

AUTHORS
       David Dawes (dawes@xfree86.org).

XFree86				 Version 4.7.0			   PCITWEAK(1)

NAME | SYNOPSIS | DESCRIPTION | OPTIONS | SEE ALSO | AUTHORS

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