Please go to the BIOS set up menu> configuration tab> hardware devices and make sure PS/2 is enabled.
You can clear the CMOS battery for 30 minutes and restore defaults in the BIOS. We also recommend testing with a different keyboard to narrow the issue.
If the issue persists it is very possible this is a compatibility issue with this specific keyboard and there is not much that can be done in these cases. Thank you for your understanding.
Yes, the PS/2 port is enabled and, as I mentioned in my original e-mail, I tried with a different keyboard and the BIOS booted fine. However, I was also able to switch to my Omnikey AFTER booting, so this is clearly some sort of BIOS bug. It's a little odd that a Northgate Onmikey would lock up your BIOS!
I did come up with a work-around though. I hooked up one of those old Raritan PS/2 Keyboard Mouse Console Emulators to the PS/2 port and plugged my Omnikey into that. This was enough to fool the BIOS into thinking the keyboard is something other than an Omnikey!
Thanks for your suggestions. You still might want to check that BIOS/keyboard identifier code tho... should not lock up the BIOS!