## Physical Device Driver Reference

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### PRT_QUERYCOMMMODE (72h) - Communication Mode

Communication Mode One of the following values:

1 Indicates use of compatible mode for host to peripheral data transfers.

2 Indicates use of nibble mode for peripheral to host data transfers.

3 Indicates use of byte mode for peripheral to host data transfers.

4 Indicates use of ECP mode without RLE for data transfers.

5 Indicates use of ECP mode with RLE for data transfers.

6 Indicates use of EPP mode for data transfers.

All other values are reserved.