Computer Organization & Architecture (3140707) MCQs

MCQs of Micro programmed Control Organization

Showing 21 to 30 out of 35 Questions
1 2 3 4
21.
AD field of microinstruction code format consists of how many bits?
(a) 7
(b) 5
(c) 3
(d) 4
Answer:

Option (a)

22.
Which symbolic microoperation is performed when F1 field has 010?
(a) INCAC
(b) OR
(c) CLRAC
(d) COM
Answer:

Option (c)

23.
To perform memory write operation in microprogrammed control, bits in field F1 should be?
(a) 000
(b) 010
(c) 110
(d) 111
Answer:

Option (d)

24.
Which of the following is not valid status bit for branch logic?
(a) U
(b) V
(c) S
(d) Z
Answer:

Option (b)

25.
Which symbolic microoperation is performed when BR field has 10?
(a) RET
(b) CALL
(c) JMP
(d) MAP
Answer:

Option (a)

26.
Which condition is checked if CD field has 01 value?
(a) AC (15)
(b) DR (0)
(c) AC (0)
(d) DR (15)
Answer:

Option (d)

27.
Value of which status bit is always 1?
(a) S
(b) I
(c) U
(d) Z
Answer:

Option (c)

28.
Which symbolic microoperation is performed when F2 field has 101?
(a) ACTDR
(b) DRTAC
(c) PCTDR
(d) DRTPC
Answer:

Option (a)

29.
To perform logical OR operation in microprogrammed control, bits in field F2 should be?
(a) 100
(b) 111
(c) 010
(d) 001
Answer:

Option (c)

30.
CAR is of how many bits?
(a) 6
(b) 7
(c) 5
(d) 3
Answer:

Option (b)

Showing 21 to 30 out of 35 Questions
1 2 3 4