Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!utgpu!water!watmath!clyde!cbosgd!ihnp4!ptsfa!ames!ucbcad!ucbvax!ACC-SB-UNIX.ARPA!rms From: rms@ACC-SB-UNIX.ARPA.UUCP Newsgroups: comp.protocols.tcp-ip Subject: re: tn3270 availability Message-ID: <8705221700.AA29738@ACC-SB-UNIX.ARPA> Date: Fri, 22-May-87 13:00:16 EDT Article-I.D.: ACC-SB-U.8705221700.AA29738 Posted: Fri May 22 13:00:16 1987 Date-Received: Sat, 23-May-87 10:45:41 EDT Sender: daemon@ucbvax.BERKELEY.EDU Distribution: world Organization: The ARPA Internet Lines: 47 Mike, TN3270 is not really a protocol, but rather a program to interpret raw IBM 3270 display protocol transmitted over a Telnet connection. Other than that, the TN3270 protocol deals with what Telnet negotiations are required, when, and in what sequence. I believe Greg Minshall at U. C. Berkeley is the originator of TN3270, which was first implemented for Berkeley Unix. It makes heavy use of Curses, and also uses a TERMCAP-like file to map the user's ASCII keyboard into a 3270 EBCDIC keyboard. TN3270 runs on 4.2/4.3 BSD Unix and its clones (Sun's, etc.), and has also been ported (by Minshall) to run under MS-DOS with the Ungermann Bass Personal-NIU Ethernet adapter. CMU has ported the DOS version to run with their enhanced version of the MIT PC/IP code, and Univ. of Md. did the same for IBM. FTP Software has a version in beta test which they are about to release. I am sure there are more, and there are certainly some in the works. We have been using TN3270 on our 4.3-based VAX, and it works well once you get the keyboard set up in a reasonable fashion. It is a bit of a CPU hog though. Also, I don't think FTP Software will mind me saying that we got a beta release of their software and it's a dynamite product. I can finally trash my 3278 and VT100 and run Unix vi and IBM full-screen applications on the same PC over a Telnet connection. It would be nice to see the same capability on a MacIntosh. The DOS-based version is public domain and can be acquired from Berkeley by contacting Greg Minshall. The Unix version is also public domain, but you probably have to have a license to use the curses library. It is included with the 4.3BSD distribution. TN3270 operates with ACCES/MVS from ACC, VM TCP/IP from IBM (both 5798-DRG and 5798-FAL), Wiscnet, KNET from Fibronics, and the public-domain MVS code from UCLA. I don't know if it works with DDN/MVS from Network Solutions since the presentations I have attended made no mention of full-screen support across Telnet. They prefer to use SimWare for this. I should also mention that Univ. of Wisconsin has developed similar software for running full-screen applications across Telnet. I believe it also runs on PC's under DOS. Marvin Solomon is a point of contact for this. The real authority for TN3270 is Greg Minshall. He reads this mailing list, so I am sure he will respond to your query. He can probably add a lot to what I have said. Ron Stoughton ACC