In <[EMAIL PROTECTED]>, on 09/01/2006
at 10:18 AM, Chris Mason <[EMAIL PROTECTED]> said:
>Well, I had difficulty finding how best to describe the "non-SNA
>channel-attached" mode of 3270 connection. It actually doesn't seem
>correct always to be calling it "non-SNA" when it predates SNA.
The IBM documentation uses the term local non-SNA.
>The latter two being in recognition that VTAM has also has (had) to
>deal with "integrated adapters".
AFAIK those were never supported in MVS.
>Incidentally, talking of this particular pre-SNA 3270 CCW
>programming, there is, by and large, a correspondence between the
>CCW command codes and the 3270 data stream commands codes.
There's a CCW opcode for each data stream command, but not vice versa.
>Regarding changing the dimensions "on the fly" from the
>device/emulator, I reflected on this further as you may have noticed
>following a comment from Gerhard Postpischil. I imagine it may
>actually be possible to have a controlled environment given that
>mechanisms exist for the application to be told that the dimensions
>have changed and so the application can "query" the dimensions in
>order to be in synchronization once again.
That would work only if the mechanism was disabled by default, so that
only applications capable of dealing with it would have to deal with
it.
--
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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