> From: Johnny Billquist <b...@softjar.se> > Date: Sun, 10 Dec 2017 11:12:45 +0100
> Rich. This is a nice thing. Thanks. Thanks, Johnny. > I have one question/wish, though. > I don't know if you were aware of a device called the RM06. This was a > Massbus disk created by Shelby, which was varible size. I am not familiar with the RM06, which was not supported under Tops-10 or TOPS-20. The MDE started out as a replacement for the RP06 drives on our DEC-1080 (replaced by the DEC-2065 on which we offer on-line accounts). Because other operating systems for the PDP-10+Massbus only supported the RP06 or RM03, we did not look beyond those for our own needs. I was disappointed to learn that the RM05 was never supported, either. > It would be a really nice thing to emulate. I can probably reverse > engineer it from the RSX driver, and I don't know which systems ever > supported it. RSX for sure. Possibly also RSTS/E, but beyond that is > more uncertain. Most people and systems had moved on from Massbus before > this drive came out. > But it is a much nicer solution than emulating eight RP06 drives, when > you have some big disk in the backend. Not if the OS doesn't support the big disk. > Do you know what speeds this emulated massbus disk can achieve, by the way? Fast enough to supply 8 RP07s on a KL-10 based Dec-10. We haven't done any serious benchmarking; it's good enough for our needs. Rich _______________________________________________ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh