Question

The signals that are used by the bus arbitration in the independent request method is

(a) BREQ (active low)

(b) BPRN (active low)

(c) CBRQ (active low)

(d) All of the mentioned

I got this question in an internship interview.

This interesting question is from Bus Arbitration and Control in portion Multimicroprocessor Systems of Microprocessor

Answer 1

Right answer is (d) All of the mentioned

The best I can explain: The four active low signals, bus request (BREQ), bus priority in (BPRN), common bus request (CBRQ) and bus priority out (BPRO) are used for bus arbitration.