. On 17-Feb-16 06:18, Henry Bent wrote: > > My final note is: if you're curious about something, just try it! > Make a backup of your current working system and then go wild. That's > the fun of SIMH. Want to see if RT-11 will recognize an RA82? Or > sixteen RC25s? Does RT-11 work with a TU56 DECtape? I have no idea > what the answer to any of those questions is, but I know how to find out. > I ran RT-11 on DECtape c.a. 1975 -- well, a third party hardware emulation of one, as we couldn't afford DECtape.
It was an exercise in patience, but it did work. We were thrilled when we were able to get a third-hand RK05. (Less thrilled with the Field Service bill to get it installed and under contract ... ) I haven't looked at the SimH TU56, but unless it emulates the positioning times as accurate wall-clock times, you really won't get the proper experience. I put accurate timing options into card and printer devices a while back, and the effect is dramatic. 1,000 LPM from a printer is noisy and you see the paper flying by. But some quick math reminds us that a typical 55 line page means 18 pages/min, so your 100 page listing takes about 5 1/2 minutes to print. If you're the first job in a queue. If you just want the output of a program, running at hyperspeed is fine. But you miss out on a lot. Like actually thinking before you print. Not to mention wait-time food. Now, if someone would just add a simulation of the surly operator who brings you the output 1/2 hour after it was printed... because emptying the printer was rarely a high priority task. :-)
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