well-supported multiport serial cards

[Charles Sprickman]

Hi,

I'm curious about what multiport (8, 16, 32 port) serial cards people have 
had good luck with.  I'm currently using two 8-port RocketPort cards in a 
console server, and while they generally work, I have to use the 
undocumented "nrp" driver to have more than one card work at a time, and 
on some boots I still end up with only one card being identified.

So in short, what are others using that works?  Does anyone have a clear 
idea of which are actively maintained?

Thanks,

Charles