Question

The bus controller relinquishes the bus if

(a) READY (active low)

(b) LOCK (active high)

(c) CBRQ (active low)

(d) BPRO (active high)

This question was addressed to me during an online exam.

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

Answer 1

The correct answer is (b) LOCK (active high)

The best I can explain: The bus controller does not relinquish (release its control on) the bus, till the LOCK (active low) input is low.