That's what I had thought too after a quick LKML search. Doing a bit
more research (I'm starting to think the IT8871F on the chip is
misleading) it looks like that support is for a single parallel multi
I/O card (with the other 887x cards being serial/parport PCI cards).
The kernel I'm using has 16 for both the NR_UARTS and RUNTIME_UARTS
(these machines generally have a minimum of 4 ports). dmesg doesn't
show the kernel as recognizing the card and only ttyS0 and ttyS1 (the
two onboard ports) show up on boot.
-- Chris
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