Kizspy | Question: 7
(Choose 1 answer)
The instruction, which adds 1 to the value in a memory location, has five stages: fetch opcode (2 bus cycles),
fetch operand address (2 bus cycles), fetch operand (2 bus cycles), add 1 to operand (1 bus cycle), and store
operand (3 bus cycles). An interrupt sends request at beginning of fetch operand address stage. How many
cycles does the processor enter the interrupt processing cycle?
A. 6
B. 7
C. 8
D. 9
E. 5