WritePciConfigByte

This function writes a BYTE value to the specified PCI configuration address.

Syntax

VOID WritePciConfigByte(
    DWORD pciAddress,
    BYTE regAddress,
    BYTE value
);

Parameters

pciAddress
[in] PCI device address

bit	description
0- 2	Function Number
3- 7	Device Number
8-15	PCI Bus Number
16-31	Reserved

regAddress
[in] Configuration register address (0, 1, 2 ... 255)
value
[in] a BYTE value to write to the configuration register

Return Values

None

Remarks

Requirements

WinRing0 1.0 or later