DRDA, network protocol, and documentation

Hi all,

I'm working on an implementation of the DRDA protocol and am planning on 
modifying postgresql to support DRDA.  (DRDA is an Open Group standard 
protocol for client to database communications, promoted mostly by IBM).  

Anyway, as a first step towards this I was hoping to expand the 
documentation of the Frontend/Backend Protocol and create some detailed 
developer oriented documentation of the internals of the networking code.

Can someone point me towards any documentation that might currently be 
available (I'm aware of the Developer's Guide), and any pointers on 
getting started would be appreciated as well. ;-)

I also noticed on the TODO list someone has put SQL*Net support as a 
network protocol.  Is this a serious plan or just a pipedream?  Part of 
what I'm aiming to do is make the network protocol stuff fairly modular so 
you could support the current protocol, and DRDA, and presumably SQL*Net 
or TDS (Microsoft/Sybases protocol), etc...

Cheers,

Brian