- Reads a bit field in a 16-bit PCI configuration, performs a bitwise OR,\r
- and writes the result back to the bit field in the 16-bit port.\r
+ Reads a bit field in a 16-bit PCI configuration register, performs a bitwise\r
+ AND, writes the result back to the bit field in the 16-bit register.\r
+\r
+ Reads the 16-bit PCI configuration register specified by Address, performs a\r
+ bitwise AND between the read result and the value specified by AndData, and\r
+ writes the result to the 16-bit PCI configuration register specified by\r
+ Address. The value written to the PCI configuration register is returned.\r
+ This function must guarantee that all PCI read and write operations are\r
+ serialized. Extra left bits in AndData are stripped.\r