In the ancient past the SMD-under-Massbus-emulation third party manufacturers (Emulex, etc.) would give binary patch locations to enlarge the RSTS/E drivers for full size use. I'm sure these had to change for every OS release.
I don't think Mentec had a full release of RSTS/E in their time. 10.1 was mostly Y2K ready in 1992, and I'm sure through the 1990's that Mentec sold it, but 10.1 release predated Mentec's acquisition. (Remind me, was the RSTS/E 10.1 Macro assembler date listing fully Y2K compliant? I remember that being a sticking point under one of the OS's.) Tim N3QE On Mon, Dec 11, 2017 at 9:38 AM, Paul Koning <[email protected]> wrote: > > > > On Dec 10, 2017, at 5:12 AM, Johnny Billquist <[email protected]> wrote: > > > > Rich. This is a nice thing. Thanks. > > > > 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. > > 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. > > RSTS should be able to handle a third party Massbus disk if it identifies > itself by the ID code of a DEC disk and has the same geometry. (More > precisely: if it has more cylinders than the original, that would be ok, > those would be ignored. But track and sector counts must be exact.) > > With the source kit, you could add a new disk model, it isn't all that > hard though it is completely undocumented. I suppose it might be possible > to *replace* an existing entry. Haven't looked at that. Studying the > sources should tell us. > > paul > > > _______________________________________________ > Simh mailing list > [email protected] > http://mailman.trailing-edge.com/mailman/listinfo/simh >
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