The following message is a courtesy copy of an article that has been posted to bit.listserv.ibm-main,alt.folklore.computer as well.
[EMAIL PROTECTED] (Patrick O'Keefe) writes: > At times like this I sorely miss my long lost APPN "Formats and Protocols" > bible. I believe official sources claim that an APPN CP and an LU were > different kinds of NAUs because they were different chunks of code. > (Or at least the same chunk of code implementing 2 different FSMs.) re: http://www.garlic.com/~lynn/2007l.html#37 Friday musings on the future of 3270 applications As undergraduate at the univ, I had done TTY/ascii terminal support for cp67 ... and attempted to make the 2702 do something that it couldn't quite do. that somewhat prompted a univ. project to build our own clone controller (originally using an Interdata/3). This was subsequently a writeup ... blaiming us (at least in part) for clone controller business (interdata was subsequently bought by perkin-elmer and the box was sold under PE logo well thru the 80s ... apparently with the same channel interface card that was designed at the univ. in the 60s) http://www.garlic.com/~lynn/subtopic.html#360pcm the clone controller business was supposedly a major motivation behind the future system project http://www.garlic.com/~lynn/subtopic.html#futuresys ... recent FS reference/post (with some quotation by one of the executives involved in FS) http://www.garlic.com/~lynn/2007l.html#10 John W. Backus, 82, Fortran developer, dies one might claim that when FS was killed, that SNA attempted to still meet some of the FS objectives with the PU4/PU5 interface for advanced terminal control infrastructure. in the same time that SNA was starting, my wife co-authored peer-to-peer networking (AWP39) ... that defined real networking ... rather than complex terminal control. Possibly there was some amount of semantic confusion lingered on because the term "SNA" contained the word "network". Later, when my wife was con'ed into going to POK to be in charge of loosely-coupled architecture, she created peer-coupled shared data architecture (... and except for IMS hot-standby, didn't see a lot of uptake until sysplex) http://www.garlic.com/~lynn/subtopic.html#shareddata she had lots of battles with the SNA organization over peer-coupled shared data ... eventually there was temporary truce with my wife being able to specify peer-couple operation as long as it was within the walls of the same/single machine room (datacenter) ... but SNA was mandated if it "crossed" the walls of the machine room. much later, APPN was specified in AWP164 and when there was an attempt to announce/release APPN, the SNA organization non-concurred (at the time, the person responsible for APPN and I reported to the same executive). The APPN announcement was escalated and eventually the announcement letter was carefully rewritten to not imply that APPN had any relationship at all to SNA. misc. past posts mentioning AWP39 and/or AWP164: http://www.garlic.com/~lynn/2004n.html#38 RS/6000 in Sysplex Environment http://www.garlic.com/~lynn/2004p.html#31 IBM 3705 and UC.5 http://www.garlic.com/~lynn/2005p.html#8 EBCDIC to 6-bit and back http://www.garlic.com/~lynn/2005p.html#15 DUMP Datasets and SMS http://www.garlic.com/~lynn/2005p.html#17 DUMP Datasets and SMS http://www.garlic.com/~lynn/2005q.html#27 What ever happened to Tandem and NonStop OS ? http://www.garlic.com/~lynn/2005u.html#23 Channel Distances http://www.garlic.com/~lynn/2006h.html#52 Need Help defining an AS400 with an IP address to the mainframe http://www.garlic.com/~lynn/2006j.html#31 virtual memory http://www.garlic.com/~lynn/2006k.html#9 Arpa address http://www.garlic.com/~lynn/2006k.html#21 Sending CONSOLE/SYSLOG To Off-Mainframe Server http://www.garlic.com/~lynn/2006l.html#4 Google Architecture http://www.garlic.com/~lynn/2006l.html#45 Mainframe Linux Mythbusting (Was: Using Java in batch on z/OS?) http://www.garlic.com/~lynn/2006o.html#62 Greatest Software, System R http://www.garlic.com/~lynn/2006r.html#4 Was FORTRAN buggy? http://www.garlic.com/~lynn/2006r.html#9 Was FORTRAN buggy? http://www.garlic.com/~lynn/2006t.html#36 The Future of CPUs: What's After Multi-Core? http://www.garlic.com/~lynn/2006u.html#28 Assembler question http://www.garlic.com/~lynn/2006u.html#55 What's a mainframe? http://www.garlic.com/~lynn/2007b.html#9 Mainframe vs. "Server" (Was Just another example of mainframe http://www.garlic.com/~lynn/2007b.html#48 6400 impact printer http://www.garlic.com/~lynn/2007b.html#49 6400 impact printer http://www.garlic.com/~lynn/2007d.html#55 Is computer history taugh now? http://www.garlic.com/~lynn/2007h.html#35 sizeof() was: The Perfect Computer - 36 bits? http://www.garlic.com/~lynn/2007h.html#39 sizeof() was: The Perfect Computer - 36 bits? ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
