WRITE_PORT_BUFFER_UCHAR

VOID
    WRITE_PORT_BUFFER_UCHAR(
        IN PUCHAR  Port,
        IN PUCHAR  Buffer,
        IN ULONG  Count
        );

WRITE_PORT_BUFFER_UCHAR writes a number of bytes from a buffer to the specified port.

Parameters

Port

Points to the port, which must be a mapped memory range in I/O space.

Buffer

Points to a buffer from which an array of UCHAR values is to be written.

Count

Specifies the number of bytes to be written to the port.

Comments

The size of the buffer must be large enough to contain at least the specified number of bytes.

Callers of WRITE_PORT_BUFFER_UCHAR can be running at any IRQL, assuming the Buffer is resident and the Port is resident, mapped device memory.