"IBM Mainframe Assembler List" <[email protected]> wrote on
09/22/2023 12:11:48 PM:
> If I am reading the manual correctly, the x'40' is "A command other than
> Sense was addressed to a device that the control unit has recorded as
> unavailable or not ready."
The web page I found says that the x'40' in byte 5 is "incorrect
length". In this case the only length I am aware of is the CCW I/O area
length. Both programs code this length as 1 for the NOOP. So, I'm not
sure what to do with that.
https://www.ibm.com/docs/en/zvse/6.2?topic=macro-format-ccb
Otherwise, since the previous EXCP for the ERASE-WRITE worked just
fine (the requisite screen does correctly appear on the device), I don't
see how the device can be unavailable. But, if your interpretation is
corerct, how would I determine if the device is not ready?
Sincerely,
Dave Clark
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