I would be willing to bet your Atom notebook has a chipset in it that would support an ISA device were it present on a non-existent ISA slot. But it does not a

I would be willing to bet your Atom notebook has a chipset in it that would support an ISA device were it present on a non-existent ISA slot. But it does not actually have an ISA bus in the sense of something actually connected to those pins.