RtWritePortBufferUchar
RtWritePortBufferUshort
RtWritePortBufferUlong

The RtWritePortBuffer* calls copy data from a buffer to an I/O port until the buffer has been emptied using the bytes you specify for each write operation.

Syntax

VOID RtWritePortBufferUchar(
    PUCHAR PortAddress,
    PUCHAR pBuffer,
    ULONG nNumberOfBytes
);
VOID RtWritePortBufferUshort(
    PUSHORT PortAddress,
    PUSHORT pBuffer,
    ULONG nNumberOfBytes
);
VOID RtWritePortBufferUlong(
    PULONG PortAddress,
    PULONG pBuffer,
    ULONG nNumberOfBytes
);

Parameters

PortAddress

A Port I/O address cast as a pointer to the type of data being written.

pBuffer

A pointer to a buffer of one-, two-, or four-byte quanta.

nNumberOfBytes

The number of bytes to be read at one time. Acceptable values are 1, 2, and 4.

See Also:

• RtDisablePortIo
• RtEnablePortIo