Charles Dickman <c...@chdickman.com> wrote: > There are indications in the KDJ11-B processor spec on bitsavers that > the M8190 could be used in a multiprocessor configuration. For > example, bit 10 of the Maintenance Register (17 777 750) is labeled > "Multiprocessor Slave" and indicates that the bus arbitrator is > disabled. There is also section 6.6, "Cache Multi-Processor Hooks", > that describes cache features that allow multiprocessor operation. > >Would it be as simple as connecting to 11/83 qbus together? And adding > the proper software. > > Anybody ever heard of such a thing?
Such a system was put together and tested at DEC with the RSX group (who did the PDP-11/74 multiprocessor work). I'm told that while it worked, it wasn't terrible successful, and the project was abandoned. I was given a gift of one of the CPU modules that was used in the test and I might still have it around here. I can't recall for certain, but I think the module required some ECOs to make it work in a multi-processor configuration. The person to ask about this, Brian McCarthy, is unfortunately no longer with us. :-( Alan Frisbie
