The following functions are available to access Port I/O control services:
Data Transfer Functions
The following functions are available to access Port I/O data transfer services:
- RtReadPortUchar, RtReadPortUshort, RtReadPortUlong directly reads a one-, two-, or four-byte datum from the specified I/O port.
- RtWritePortUchar, RtWritePortUshort, RtWritePortUlong directly writes a one-, two-, or four-byte datum to the specified I/O port.
- RtReadPortBufferUchar, RtReadPortBufferUshort, RtReadPortBufferUlong copies a series of one-, two-, or four-byte datum from the specified I/O port to a buffer.
- RtWritePortBufferUchar, RtWritePortBufferUshort, RtWritePortBufferUlong copies a one-, two-, or four-byte datum from the specified I/O port to a buffer.
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