"IBM Mainframe Assembler List" <[email protected]> wrote on
11/08/2023 04:49:37 PM:
> I don't understand. The USING is associated with the location in the
> source where you code it, not with the location in the source where
> you define the data.
Perhaps my understanding of it is flawed or limited, and I also
somehow have a different concept of how a USING applies to data vs. how it
applies to code. But my logic seems to tell me that the USING has to be
"active" at the time the branch instruction is executed. It seems the
branch would not assemble if I DROPed the USING that covered the code
(where the branch target was defined) before the point where I attempted
to actually branch to it.
Meaning, using your example, it seems the following would fail to
assemble. Is this my misconception? If so, how does this relate to
having to use an address constant with LOAD instead of just using LOAD
ADDRESS -- as was mentioned?
USING *,R11
TARGET DS 0H
DROP R11
...
USING *,R12
B TARGET
DROP R12
Sincerely,
Dave Clark
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