[Simh] VAX-11/782

[Sergey Oboguev]

Curiously enough, 11/782 and other MA780-based models were not the only multiprocessor design based on the 11/780.

Some brave souls just took out the SBI terminator and hooked in a second KA780 CPU in its place, using the created dual-processor machine to develop what appears to be the very first multiprocessor version of UNIX (based on 4.1/4.2). 

Both processors (master and slave) shared the SBI, IO adaptors and single-port (MS780) memory.

http://dl.acm.org/citation.cfm?id=801738

According to the lore, the whole story started with a 780 being dropped off a truck...
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