Path: utzoo!utgpu!water!watmath!clyde!rutgers!ames!ucbcad!pasteur!ucbvax!QUABBIN.SCRC.SYMBOLICS.COM!DCP
From: DCP@QUABBIN.SCRC.SYMBOLICS.COM (David C. Plummer)
Newsgroups: comp.protocols.tcp-ip
Subject: Where to find... supdup and tn3270 specs
Message-ID: <19880119220752.1.DCP@SWAN.SCRC.Symbolics.COM>
Date: 19 Jan 88 22:07:00 GMT
References: <8801182254.AA07198@gmuvax2.gmu.edu>
Sender: usenet@ucbvax.BERKELEY.EDU
Organization: The ARPA Internet
Lines: 22


    Date: Mon, 18 Jan 88 17:54:05 est
    From: philipp@gmuvax2.gmu.edu (Philip Prindeville)

    Hi.

	    I need to know whatever happened to the ad hoc tn3270
    group -- did they ever produce and RFC and if so where can it
    be FTPd from?  Also, is there a formal description of SUPDUP
    that doesn't presume PDP-10 assembly language programming (or
    indeed, NCP and 9 bit bytes)?  I've never hacked on a PDP-10
    (I guess I've been unlucky :-), and I'm using TCP (aren't
    we all?).

SUPDUP is RFC734.  It does not use 9-bit bytes for transmission; it uses
8 bit bytes and works today over TCP and CHAOS (and any other 8-bit
meduim).  (It took me all of two hours to convert the ITS SUPDUP server
and/or user to TCP from NCP.)  Many of the definitions look like they
deal with 12 or 36 bit quantities, but view them as logical fields
instead of parts of a 36 bit word.  I have written and maintained user
ends of SUPDUP for PDP-11s (many years ago) so things aren't really that
PDP-10/ITS specific.