puc(4) not attaching to NM9845-based serial card in 6.3-p5

[Darren Pilgrim]

I have the following PCI, 4-port serial card:

none2 at pci6:2:0: class=0x070002 card=0x00041000 chip=0x98459710 rev=0x01 
hdr=0x00
     vendor     = 'MosChip Semiconductors (Was: Netmos Technology)'
     device     = 'Nm9845 Parallel/Serial Port Adapter'
     class      = simple comms
     subclass   = UART

This is supposedly supported by puc(4); however, I'm unable to get the 
driver to attach to the card.  I tried both uart+puc and sio+puc.  In 
all both case, the uart/sio drivers attach to only the serial port on 
the motherboard.  There are a number of hits on the mailing list 
archives that discuss puc(4) not attaching to this device, but none 
provide any conclusive answers.

-- 
Darren Pilgrim