UCHAR
READ_PORT_UCHAR(
IN PUCHAR Port
);
READ_PORT_UCHAR reads a byte from the specified port address.
Parameters
Port
Points to the port address, which must be a mapped memory range in I/O space.
Return Value
READ_PORT_UCHAR returns the byte read from the specified port address.
Comments
Callers of READ_PORT_UCHAR can be running at any IRQL, assuming the Port is resident, mapped device memory.