APPENDIX A: LOOPBACK CODE
The code below will execute the Group I loopback tests, following the description in Section 6.1. When executed, the FIFO and
register contents are printed to an output file (output.txt unless specified differently). Refer to AN-874, Writing Drivers for the
DP8390 NIC Family of Ethernet Controllers, for a description of the PCtoNIC routine used in this program.
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