Interrupts of 8085 Microprocessor – 1 – 1

1. An interrupt which can be temporarily ignored by the counter is known as :

(a) Vectored interrupt
(b) Non maskable interrupt
(c) Maskable interrupt
(d) Low priority interrupt

ANSWER

EXPLANATION

2. An interrupt which can be temporarily ignored by the counter is known as :

(a) Vectored interrupt
(b) Non maskable interrupt
(c) Maskable interrupt
(d) Low priority interrupt

ANSWER

EXPLANATION

3. An interrupt in which the external device supplies its address as well as the interrupt request is known as :

(a) Vectored interrupt
(b) Non maskable interrupt
(c) Maskable interrupt
(d) Designated interrupt

ANSWER

EXPLANATION

4. In 8085, interrupts except TRAP are disabled by (incorrect) :

(a) A DI instruction
(b) A system reset
(c) Acknowledgement of a previous interrupt
(d) None of the above

ANSWER

EXPLANATION

5. When a CPU is interrupted, it :

(a) Stops execution of instruction
(b) Acknowledges interrupt and continues
(c) Acknowledges interrupt and branches to a subroutine
(d)  None of the above

ANSWER

EXPLANATION

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