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RedHat 9 (Linux i386) - man page for pcitweak (redhat section 1)

PCITWEAK(1)						      General Commands Manual						       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 platfoms 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 hexadecimal. 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 Version 4.3.0 PCITWEAK(1)

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