I have two programs -- both of which perform 3270 I/O with a
supervisor appendage routine in order to wait on a 3270 attention
interrupt instead of just the normal channel-end + device-end CCB status
code (x'0C00').
The idea is to perform a 3270 ERASE-WRITE followed by a 3270
READ-MODIFIED. Both use EXCP. But, because (in between) you're waiting
for an end-user to make their changes and then hit either a function key
or an attention key, you can't just following the ERASE-WRITE with the
READ-MODIFIED. In between, you have to queue up a NOOP and perform a
special wait for the 3270 attention signal. Thus the reason for the
appendage routine.
The first program is supplied by somebody else (with source code)
and works just fine. The second program is one I've written and pretty
much incorporates the same techniques used by the fist program. However,
when my program goes to queue up the NOOP, I get back CCB status x'0C40'
and I can't figure out why. Anybody else have some idea?
Sincerely,
Dave Clark
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