with 91c96

I have 91c96 Ethernet card integrated into CP312 Compact PCI CPU module. SMC
setup program allows to select one of the 2, 3, 10 or 11 IRQs only. QNX 4
Net.ether9000 always shows correct information about the card:

Vendor ID: 0x10B8
Product ID: 0x9000
Revision: 0x0009

but works properly only when IRQ 2 is used. The never
reports real card information and never makes this card work with any of
those IRQs.

Any ideas how to make the card work in RTP ?