Has anyone had any luck getting QNX6 to work properly under the qemu virtual machine?

When I try it, on bootup I get error messages about being unable to locate the PCI server.  From then on, everything 
works, but without PCI --- which means horribly slow graphics and no networking. (While both qemu and QNX appear to 
support NE2000 over ISA, I haven't been able to make them work yet.)

Can anyone suggest a fix for this?