3Com Etherlink III compatibility

I’m trying to get to work on QNX 4.25 a 3Com Etherlink III (3C562D)
PCMCIA Ethernet/modem card, but even if the Net.ether589 seems to work,
when I check with netinfo, I get a list of only errors, and with netinfo
-l (el) I see that the Physical address is correct but Tx and Rx
counters are always 0.

Some hint?

Thank you.