To: John Mansfield who wrote (1653 ) 5/4/1998 2:13:00 PM From: John Mansfield Respond to of 9818
TCAM (Mainframe software) dependency This is not so funny... John ____________ 'On Sat, 2 May 1998 02:16:05, bks@netcom.com (Bradley K. Sherman) wrote: > In article <6idsuk$5r5$1@nnrp1.dejanews.com>, <fedinfo@halifax.com> wrote: > >THEY WERE NOT TOTALLY DEPENDENT ON COMPUTERES THEN. > > > >THEY ARE NOW. > > > >Get the difference, butthead? > > They're not changing the laws of physics on 1 Jan 00, Paul. > Trains still have engineers and you have presented no > evidence that even one locomotive will be disabled > by a Y2K bug. The tracks are certainly not going to > be affected. As I said, schedule degradation yes, > shutdown no. Rig the switches for manual operation > if they don't already have that capability. Actually > the trains might do rather well as they have their > own electric power ('cept for electric trains of course) > and thus will have telecom. > > --bks Ah but they have changed the laws of physics. This is another of my incredible insights... (this bit of hype is inserted for nubies) Prior to 1990, very roughly, trains moving up and down the East Coast went to the big switching yard near Washington National Airport (now called the Ronald McDonald Washington National Airport). Oops back up 10 years. In 1980, very roughly I saw the source code to a TCAM MCP that the AAR, the American Association of Railroads uses to keep track of box cars. At that time VTAM had been out for a while, and I was surprised to learn that anyone was still running TCAM. FYI, I am one of perhaps 500 people in the whole world who has written TCAM message handlers. First you need to crank assembler, know multi-programming services, TCAM internals... blah-blah. .not too many of us around... where was I? Oh yeah, there's probably ten times as may CICS internals mechanics as TCAM mechanics. Am I nattering yet? Anyway thoughout the 1980's and 1990's, I heard rumors of a plan to build hotels and office buildings on the railroad switchyard. Dummy that I am, I figured they would drive pilings and deck over the switchyard. What's a switchyard? It's a place that trains decouple freight cars, switch -em around and reconstruct shipments, like planes going to a hub. Guys in towers see the trains, figure out how to re-jigger them, and someone pulls on levers. In about 1995, they started tearing up the switchyard. It's gone now and there are a bunch of big-box stores there. The Washington Post reported that since they have computers, they can switch the trains on the fly all up and down the East coast and they don't need the switching yard. Well, fiddle-di-di. since they have computers? Not anymore. Here's the convergence... I saw the source to the program. It was huge pile of greenbar fanfold assembler listings. So here's the fun part, all heavy commerce on the Eastern side of the U.S. depends on a complex assembler program that is infested with dates, times, really odd macros and there are perhaps 500 people in the entire world who can work on it. There's probably 50-100 people with the skillsets in New York because TCAM runs the financial community too. TCAM - Telecommunications Access Method, QTAM with reusuable disk queues. MCP - Message Control Program CICS - Customer Information and Control System, CICS started out using BTAM to drive terminals, later versions used TCAM and VTAM as TP access methods. VTAM - Virtual Telecommunications Access Method. Access Method, what PeeCeeWeeNee's call an IFS, installable file system. Sidebar, TSO, the Time Sharing Option of MVT, MVS, (SVS), OS/390, etc. also used TCAM and VTAM as TP access methods. IBM distributed a 'canned' TCAM MCP for TSO. That's not what I'm talking about. The MCP that I saw was clearly hand written for the application... and it was huge. If they still had the switch yard, bks would be right. It's gone, paul is right, they can't switch the trains without computers. But there are still 607 days left. Maybe the railroads will outbid NY banks and financial companies for TCAM internals assembler programmers? Let's start the bidding at $500/hour... cory hamaski I still have the full set of TCAM manuals that they gave us at TCAM Operation and Design class. _____ Subject: Re: Handwriting On The Wall For Buttheads Date: 4 May 1998 05:04:09 GMT From: kiyoinc@ibm.XOUT.net (cory hamasaki) Organization: IBM.NET Newsgroups: comp.software.year-2000 References: 1 , 2 , 3 , 4 , 5