I acquired a DECserver 550 for the KDJ11-SD in it, and
now I have a pile
of these CXY08-M boards. It is an 8-line multiplexed serial I/O board,
with modem control. Are these good for anything besides building a
DECserver? Will I be able to find an RT-11 or UNIX driver for it? Or
maybe, from the CPU side, it might look enough like another DEC serial
board that it will work with an existing driver. 
I don't know about third-party drivers, but RT-11 V5.6 and later
have latent support for the CXY08 boards... they are programmed
just like DHV/DHQ.  They look nothing like a DL[V]...
                                        Megan Gentry
                                        Former RT-11 Developer
+--------------------------------+-------------------------------------+
| Megan Gentry, EMT/B, PP-ASEL   | Internet (work): 
gentry!zk3.dec.com |
| Unix Support Engineering Group |          (home):  
mbg!world.std.com |
| Compaq Computer Corporation    | addresses need '@' in place of '!'  |
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| Nashua, NH 03062               | "pdp-11 programmer - some assembler |
| (603) 884 1055                 |  required." - mbg            KB1FCA |
+--------------------------------+-------------------------------------+