[HECnet] Tops-20 ANONYMOUS FAL Preliminary Testing Results/DAP Query

DECnet is not an operating system. And VMS is obviously not for the PDP-11. If you want both DECnet and TCP/IP, then the choice is essentially only RSX-11M-PLUS. But apart from that, it depends on what you prefer. RSTE/E is more pure timesharing, RT-11 is more pure realtime and minimalistic, RSX-11D and IAS are sortof timesharing with realtime with more of a focus on timesharing and large systems. RSX-11M is reatime with timesharing, and a little primitive in some corners, while RSX-11M-PLUS is essentially RSX-11M with lots of extra bells and whistles added, so still realtime with timesharing, but friendlier, more efficient, and more capable. In the end I would probably boil it down to either RSTS/E or RSX-11M-PLUS, depending on preferences and what tools you want. For most parts, there are more and more capable tools for RSX-11M-PLUS, but RSTS/E is probably still a bit friendlier. If you know VMS, then in many ways RSTS/E will be rather familiar at a user level, but RSX will be more familiar if you start digging under the hood. ? Johnny