Mark,
To the best of my recollection, all SVCs issued in CMS other than those in the 200s? (e.g., 202, 203), are used by OS simulation.? Thus SVC 8 is from an OS LOAD macro.? SVC 10 is GETMAIN/FREEMAIN.? SVC 6 is LINK.? Thus those are documented in VS1 or VS2 documentation of the period.? There are several more.
The SVC 8 documented posted here just a couple of messages ago is for CP's use of SVC 8.? That is NOT the same as what a CMS user will encounter, so disregard the documentation in that post.
Regards,
Bob