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Confused Code



IOCERR+13/ HRRZ R,-3(F)
IOCERR+14/ SKIPL R
IOCERR+15/ JRST IOCER8

Is this supposed to make sense?  Since IOCER8 always clobbers R,
this is identical to a JRST IOCER8.  Maybe the HRRZ is spurious?