rrk@byuvax.bitnet (10/05/87)
Correct me if I am wrong: Aren't the "interlocked" instructions such as adwi, bbssi, bbcci only really useful on the obsolescent vax 11/782 shared memory? Don't all instructions--except for those which trash registers (which are also used to save the context of the executing instruction) like movc-- non-interruptable. I understood that unless you had the 11/782 multiport memory, bbcc was as good as bbcci. Or is there still requirement for special interlocking when you have multi processors such as the 8800?