Question

As a response to the valid bus hold request, the bus is pushed into

(a) TH (hold) state

(b) Ts (status) state

(c) Tc (command) state

(d) Ti (idle) state

The question was asked in class test.

My question comes from Priority of Bus Use By 80286, Bus Hold and HLDA Sequence, Interrupt Acknowledge Sequence in division 80286-80287-A Microprocessor with Memory Management and Protection of Microprocessor

Answer 1

Correct option is (a) TH (hold) state

Explanation: 80286 local bus is relinquished for another bus master if a valid bus hold request is received at the HOLD input pin. As a response to a valid bus hold request, the bus is pushed into TH state.