>The data traced will be determined by the register contents at the time the SA
>PER interrupt occurs, in other words at the time the storage is altered. If the
>storage is altered by the code you expect, with reg 8 pointing to the block,
>then that is what you will get. If it is hit by something else, with some other
>address in reg 8, then too bad, you might get no storage traced, or get some
>other chunk of storage traced. If you use DATA on the SA trap, the registers
>used for that are also those at the point that the storage was altered.
Thanks a lot, Andy. That makes some sense, now.
I did find an example of ACTION=TARGETID in the System Commands manual, and I'm
able to make those work by being very good at guessing where my module is going
to be loaded, after I determined that the addresses specified in RANGE have to
be real..er, actual virtual addresses for the ACTION=TARGETID SLIP. At least, I
haven't been able to specify RANGE=(module.0,+24C0), or some such.
More and more testing, even flawed testing, has shown the problem to be
somewhere between the primary task and IP; that makes it much easier to slap a
SLIP on it, and the dynamic SA SLIP will (SHOULD) work for me that way.
I have found in debugging IP programs and issues that SLIP causes _BIZARRE_
errors. Is that something I have to live with in heavily time-dependent,
heavily multitasked applications?
Thanks again,
R;
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