In
<[EMAIL PROTECTED]>,
on 09/01/2006
at 02:53 PM, Alan Altmark <[EMAIL PROTECTED]> said:
>If memory serves, BSC and SDLC terminal controllers existed long
>before you could assign a CUU to a 3270.
BSC existed well before the 3270, but the first 3270 announcement
included the 3272, which was strictly channel attached. The SDLC
version of the 3271 did not have full SNA functionality.
>And in MVS those were handled by the SNA implementation of the day
BTAM supported both channel attached and BSC versions of the 3270;
DIDOCS supported the channel attached version of the 3270. TCAM, as
the anointed successor to QTAM, supported all versions, as did VTAM
when it came out.
>Enter the "non-SNA" solution for 3270s.
Non-SNA cam first.
>And to differentiate it from "remote"
>controllers (R models), it is "local" (L models).
The 3274 and 3174 came later; the 3272 came only in a local model. BSC
and SDLC were supported by the 3271 and 3275, which were strictly
remote.
[1] At the time there was no SNA channel attached 3270, which DIDOCS
never supported and never will.
--
Shmuel (Seymour J.) Metz, SysProg and JOAT
ISO position; see <http://patriot.net/~shmuel/resume/brief.html>
We don't care. We don't have to care, we're Congress.
(S877: The Shut up and Eat Your spam act of 2003)
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