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Mark Waterbury once said on the hercules-390 goup:

SVS ran very well on a 370 model 158 with 2MB of main storage, circa 1976 or so, running batch and also supporting CICS/VS for on-line applications. No TSO, though, as that was known to be a performance hog.

One of the selling points of CMS was it could run as twice many users of TSO on the same hardware.

SVS 1.7, with the VSAM ICR (independent component release) to support VSAM datasets for use by CICS/OS/VS 1.1.1. BTAM was used with CICS/VS for local terminals, not VTAM. (mainly due to lack of 3705 hardware.)

What does the SVS version in this group's archive have? (Does it have basic VTAM and VSAM?)

-ahd-

Hi, Drew,

The SVS that we have here is "bare bones" as a plain vanilla IBM SCP distribution, built from some SVS 1.7K DLIBs we were able to recover. It is notably incomplete due to the lack of TSO. Also, unlike OS/360 MVT, SVS did not come with any "free" compilers, etc., as by that time, IBM was charging for each compiler as a separate program product.

We also have HASP II Version 4.0 for SVS ... Kevin Leonard is working on getting HASP II Version 4.1 ready for distribution.

Of course, you can install pretty much all the compilers from OS/360 MVT, and the OS/360 SORT utility (IERRCO00), and Jay Moseley's "compilers pack" etc. on your SVS system, once you get it installed and running.

In the next few weeks, we hope to recover additional DLIBs for SVS 1.7, including the missing TSO DLIBs. As soon as that work is completed and it is tested, we will announce it here on the H390-OSVS list.

Hope that helps,

Mark S. Waterbury

SVS 1.7K has VTAM and VSAM, but I don't know that we have any SVS application that uses VTAM. TSO doesn't, it's still TCAM-only on SVS. The copy we have includes VTAM, but part of TCAM is missing and other parts seem to be backlevel, as though the installation it came from didn't use TSO. VSAM is present, but it seems a bit fragile: my sysgen hack that uses a JOBCAT containing DLIBs defined as NONVSAM objects didn't work reliably on SVS because after a while, the VSAM catalogs would break even though they should have only been getting accessed for LOCATEs, so I think I eventually gave up on trying to use them and just cataloged DLIBs in the system CVOL catalog.

SVS didn't come with any free compilers, but IBM explicitly documented that most of the free OS compilers would work on SVS (for some reason, that included COBOL F, which had already been withdrawn by the time SVS was available).

--
Kevin