RtWritePortUchar
RtWritePortUshort
RtWritePortUlong

The RtWritePort* calls write data directly to an I/O port from a specified buffer. Each function writes a different number of bytes of data.

Syntax

VOID RtWritePortUchar(
    PUCHAR PortAddress,
    UCHAR pBuffer
);

VOID RtWritePortUshort(
    PUSHORT PortAddress,
    USHORT pBuffer
);

VOID RtWritePortUlong(
    PULONG PortAddress,
    ULONG pBuffer
);

Parameters

PortAddress

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

pBuffer

The one-, two-, or four-byte quantum to be written to the port.

Remarks

These calls write directly to an I/O port from a buffer. RtWritePortUchar writes a single byte,RtWritePortUshort writes two bytes, andRtWritePortUlong writes four bytes of data at a time.

See Also:

RtDisablePortIo

RtEnablePortIo

RtReadPortBuffer* (Uchar, Ushort, Ulong)

RtReadPort* (Uchar, Ushort, Ulong)

RtWritePortBuffer* (Uchar, Ushort, Ulong)