Help with 2.9BSD Unix?

[Patrick Barron]

Anyone out there ever done anything with 2.9BSD?  I'm trying to deal with
bringing up an 11/23-PLUS under 2.9, and I need to know:

1)  As anyone written a 2.9BSD driver for MSCP type disks (like the RD52)?
    If so, could I get it?

2)  Can anybody tell me how to make 2.9 use all the memory my 11/23-PLUS
    (using Q22-bus) is capable of addressing?  I have 1 meg of memory,
    but "vanilla" 2.9 can only deal with 18-bit addressing if you don't
    have a Unibus map.

--Pat.