Question

Which of the following is the highest priority usage among them?

(a) second transfer cycle of a processor extension data transfer

(b) third transfer cycle of a processor extension data transfer

(c) hold request

(d) second byte transfer of 2-byte transfer at an odd address

The question was posed to me in class test.

My doubt is from Priority of Bus Use By 80286, Bus Hold and HLDA Sequence, Interrupt Acknowledge Sequence topic in chapter 80286-80287-A Microprocessor with Memory Management and Protection of Microprocessor

Answer 1

The correct option is (d) second byte transfer of 2-byte transfer at an odd address

The best explanation: The second byte transfer of 2-byte transfer at an odd address, is the highest priority usage among the given usages.