On Sun, Jun 28, 2020 at 2:36 PM Paul Koning via cctalk <cctalk@classiccmp.org> wrote: > > Err, I expect that that was RSTS-11 in June, 1970, not RSTS-E. Since RSTS-11 > > (which I learned to program on; happy memories :-) was a BASIC-PLUS only > > system, and ran on a PDP-11/20, I suspect it was a fairly different > > operating > > system (although no doubt it's BASIC-PLUS interpreter was ported to RSTS-E). > > > > I think RSTS/E needed the -11/45, introduced around June 1972; sources > > give 1973 for RSTS/E.
I came to RSTS some time later (not counting dialling from a DECwriter, I first really used RSTS/E in 1984) but with the difference between RSTS-11 and RSTS/E, I went over David Ahl's "101 BASIC Computing Games" to figure out from the code, from the run listings, and from the descriptions, which of the many systems were used. I found references identifying about 40% of the games, and relevant to this thread, ANIMAL and BLKJAC mention RSTS-11, several mention RSTS/E (ACEYDU, FIPFOP, HOCKEY, HURKLE, MUGWMP, SALVO, and SYNONM), and one mentions the EduSystem 70 (HRMABI). In various places I've found mention of the EduSystem 60 (single-user on a 4K PDP-11/20), the EduSystem 70 (up to 8 users on a 16K PDP-11/20), and the EduSystem 80 (up to 16 users on a 24K PDP-11/20 and a specific mention or RSTS-11). The EduSystem handbook (1973 publication date) only covers up to the EduSystem 50 so I don't have configuration details of any of the systems. As I mention from time to time, I have an 11/20 that needs extensive restoration work (it was rescued from the dumpster at work after my supervisor stripped out fans and PSUs) and I'd love to find things to run on it other than paper tape and toggle-in programs. Finding a copy of an EduSystem distro would be fantastic for demos. Cheers, -ethan