ESIX- Additional Serial Ports?

[John Temples]

In article <538 at everex.UUCP> jde at everex.UUCP (-Jeff Ellis) writes:
>You can get an AST 4 port board that will put all four ports on one IRQ, 

Does anyone know of a source for this board (or clone) and the cost?  Are
the UARTs socketed?

>BTW if you have Rev D of ESIX it will
>make use of the 16550 FIFO chip if you have it.

Is anything required to enable the 16550?  It's not mentioned on the
asy(7) man page.
-- 
John W. Temples -- john at jwt.UUCP (uunet!jwt!john)