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GATE EC 2021: Digital Circuits Quiz 8 (App update required to attempt this test)
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Question 1
The total number of maskable and vectored interrupts in 8085 is _________.
Question 2
Which of the following instructions does not use the stack?
Question 3
Consider the following 8085 assembly program:
MVI B, 89 H
MOV A, B
MOV C, A
MVI D, 37 H
OUT PORT1
HLT
The output at PORT1 is ________H.
Question 4
In an 8085 based system, the subroutine TEST given below is called by another program. When the processor returns from the subroutine TEST, the value in the accumulator will be
TEST: MVI A, 00H
CALL NEXT
NEXT: INR A
RET
Question 5
Consider the following set of instructions :
LXI B, 798 A H
MOV A, C
ADD B
DAA
The contents of the accumulator after execution of above instructions is (……….)10.
Question 6
In an 8085 microprocessor, the following program is executed
At the end of program, register A contains
At the end of program, register A contains
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