Gerhard Postpischil wrote:
On 8/2/2011 3:11 PM, CM Poncelet wrote:
this. But in any case the BDW and RDW would not be loaded into
the buffer.
The BDW and RDW are always included in the buffer. They may not be
seen at the application level (e.g., on a ForTran read or write, or in
CoBOL).
Well yes, they have to be loaded into VS to be processed. In the case of
block read/writes they precede the data records in the buffer. But
whatever was being discussed at the time I wrote that had to do with
record read/writes, in which case the BDW and RDW would not be
accessible from the buffer: so perhaps I should have said 'not
accessible' instead of 'not loaded'.
I have no time for that. If something is true it can remember
itself; if it is false it is not worth remembering. Hence I
remember what I am dealing with and forget it afterwards. Do you
expect me to *remember* system control blocks?
But as is obvious from this thread, you are making assertions based on
(mis)information where you should have refreshed your memory. I still
don't know what you meant by "CCW EXCPs", for example.
If I dealt only with MVS, I would have the time to refresh my memory:
but I don't; I work with subsystems. By CCW EXCPs I am simply
emphasising the fact that the channel programs (CPs) are issuing CCWs
(which have direct access to DASD devices).
'DCB' is shorter than the 'RECFM=,LRECL=,BLKSIZE=' I am actually
referring to when I say 'DCB'; so I say 'DCB' for short.
'Data format' is also shorter than those, and a lot less ambiguous.
True. I translate my thoughts into words and for this I use whatever
suitable word - not necessarily the most appropriate one - first comes
to mind.
Gerhard Postpischil
Bradford, VT
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