Network card problem

We have bought new 3COM Ethernet network cards (3CSOHO100-TX Hurricane).
Cards work properly with QNX4, where we have to start network driver
Net.ether905 with -d7646 option. Bat cards doesn’t work with QNX 6.1 even we
use did=device_id option.
Can anybody help us?

Thanks

Marek Smrz