Hi,
What you could do is to look at how drivers auto-detect
the interrupts of their hardware, there is often few bits
to change in I/O space to trigger an IRQ (different for
each video/serial/IDE... boards and ISA/PCI bus).
So unload the module managing the card, setup the interrupt
handler, store the time from the Pentium timestamp,
generate the IRQ by changing the special I/O bits, store
the time in the interrupt handler, clean the hardware
and reload the module.
Have fun,
Etienne.
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