ROM is a Read / Write memory

PC points to the last instruction that was executed

Stack works on the principle of LIFO

All of above

As soon as the TRAP pin becomes ′LOW ′

By checking the TRAP pin for ′high ′ status at the end of each instruction fetch

By checking the TRAP pin for ′high ′ status at the end of the execution of each instruction

By Checking the TRAP pin for ′high ′ status at regular intervals

A hardware interrupt is needed

A software interrupt is needed

Either (a) or (b)

A non-privileged instruction (which does not generate an interrupt) is needed

An RST by hardware

The instruction supplied by external device through the INTA signal

An instruction from memory location 20 H

None of these

RST 5.5

RST 7.5

TRAP

Both (a) and (b)