READ_PORT_BUFFER_UCHAR

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

READ_PORT_BUFFER_UCHAR reads a number of bytes from the specified port address into a buffer.

Parameters

Port

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

Buffer

Points to a buffer into which an array of UCHAR values is read.

Count

Specifies the number of bytes to be read into the buffer.

Comments

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

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