In some email I received from Joseph Sirucka, sie wrote:
> Hi
> 
> I have a four port serial card, with very little information about it.
> 
> All it I know is it is sbus, Is 4 port serial with rj45 connection, has 
> "quad serial card 4000SS" and serial # 4000 -".
> 
> If more information is required I can send a picture of it.

I believe the chips are Cirius (it shows up as "cs" in the PROM listing
of SBUS devices) ?

Darren