WritePciConfigByteEx

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

Syntax

BOOL WritePciConfigByteEx(
    DWORD pciAddress,
    DWORD 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 ... 0xFFFFFFFF)
• value
  [in] a BYTE value to write to the configuration register

Return Values

If the function succeeds, the return value is TRUE.

If the function fails, the return value is FALSE.

Remarks

regAddress supports 32 bit value.

Requirements

• WinRing0 1.2 or later

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