On 2019-11-11, at 09:25:32, Jonathan Scott wrote:
>
> The USING 0 case used to occur from time to time by accident
> when using PL/S, PL/X or similar compilers which generate
> assembler as an intermediate step, if the programmer switched
> into assembler temporarily. This was because the programmers
> often failed to realise that the compiler translated a structure
> to a set of equates for offsets, not a DSECT.
> ...
I once had a DSECT that mapped a PSW. So, hopefully, I tried
something like:
USING PSWDSECT-FLCIOPSW,R0
The result was not what I intended. Experts tell me the design
is misguided, but won't be fixed lest it break extant art.
Interestingly:
XR R2,R2
USING PSWDSECT-FLCIOPSW,R2
works better and more intuitively.
-- gil
