Does QNX4 use any information provided by the BIOS at boot t

Hi

Does QNX4 use any information provided by the BIOS at boot time?
I may need to load a little ISR into unused RAM before QNX4 is started. If
QNX is going to trounce my ISR, by testing memory and initializing the
Interrupt Controller, then I’d like to know. I don’t want to waist my time.

Regards, Clint