On Tue, 27 Dec 2016 17:58:03 -0800, Anne & Lynn Wheeler wrote: > >> Decades ago, I had experimented with similar techniques, even so far as >> paired +- RLDs. In the course of that, I discovered that CMS obeys its >> own rules. If I had unresolved WXTRN + absolute offset, it got relocated >> anyway because CMS assumed the nonzero result meant the WXTRN was >> resolved. > >re: >http://www.garlic.com/~lynn/2016h.html#98 A Christmassy PL/I tale >http://www.garlic.com/~lynn/2016h.html#101 Multitasking question > >part of the issue was that CMS had a 64kbyte os/360 system services >simulation implementation. With the introduction of MVS ... and its >8mbyte kernel image ... there was a joke that CMS 64kbyte os/360 system >services simulation was significantly more effective than the MVS 8mbyte >os/360 system services simulation. > If by "more effective" one means that CMS produced incorrect results faster than OS produced correct results ...
And OS emulation I/O ignored Length Indicate reported by CP. And OS emulation failed to count the 4-byte RDW for RECFM=VB. ... but that made it plenty fast. -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
