Re: Cmd to read from a comm LINE - pt to pt BSC

["Urbanek, Marty" <Marty_Urbanek@xxxxxxxxxxxx>]

Speculating about Joe's question, I don't think the first message from S/1
was stored, but rather discarded as invalid. The 400 probably ACKs the ENQ
even though no program is running just in case the first message was a
Program Start Request. Then when it finds out that it wasn't, it wants to
end the session. Why it does this with ETX, I'm not sure.

-Marty

----- Original Message -----
From: "Jeff Silberberg" <jsilberberg@mindspring.com>
To: <midrange-l@midrange.com>
Cc: <jleyden@co.la.ca.us>
Subject: Re: Cmd to read from a comm LINE - pt to pt BSC
Date: Wed, 28 Nov 2001 20:35:39 -0500
Organization: CompuDesigns, Inc.
Reply-To: midrange-l@midrange.com

Joe,

            Should be    S/1     iSeries
                                ENQ  -->
                                  <-----ACK0
                                 DATA --->
                                   <----ACK1
                                 EOT---->

            Then there is the IRS or ITB, and ETB or ETX, and a bunch of
other things.  First time I did this was 1974 (I think) with a SYSTEM 34.
Did it with Series/1s and System 38s in the 80's, and I have done a few with
AS/400s and Banks in the 90s.  Be happy to try and help if you want...  Have
a Library on ??Tape?? around here somewhere with my Bysnc tools.. Do you
have an SST Comtrace ?? Or you using something external like ComProbe ??

JMS

Jeffrey Silberberg
CompuDesigns, Inc.
Atlanta, GA.

----- Original Message -----
From: <jleyden@co.la.ca.us>
To: <midrange-l@midrange.com>
Sent: Wednesday, November 28, 2001 7:46 PM
Subject: RE: Cmd to read from a comm LINE - pt to pt BSC


>
> Actually the AS400 gets the first test message I sent
> (from the Series/1) using a trace at the AS400.
> The problem is all I have is *PGM without having
> any real program reading the line.
>
> I'm also wondering where did the AS400 store that first
> message I saw on the trace.
>
> The AS400 was suppose to responde with an ACK1 so I could
> continue to send the next message but it responds with an
> ETX which terminates the communication.
>
> Joe