ExamSIDE
Questions (Powered by ExamGOAL)
Microprocessors
Pin Details of 8085 and Interfacing with 8085
Marks 1Marks 2
Instruction Set and Programming with 8085
Marks 1Marks 2Marks 5
Previous Next
1
GATE ECE 2005
MCQ (Single Correct Answer)
+2
-0.6

Consider an 8085 microprocessor system


If in addition following code exists from 0109H onwards ORI 40H, ADD M What will be the result in the accumulator after the last instruction is executed
A
40H
B
20H
C
60H
D
42H
2
GATE ECE 2004
MCQ (Single Correct Answer)
+2
-0.6
Consider the sequence of 8085 instructions given below.
LXI H, 9258
MOV A, M
CMA
MOV M, A
Which one of the following is performed by this sequence?
A
contents of location 9258 are moved to the accumulator.
B
contents of location 9258 are compared with the contents of the accumulator.
C
contents of location 9258 are complemented and stored in location 9258.
D
contents of location 5892 are complemented and stored in location 5892.
3
GATE ECE 2004
MCQ (Single Correct Answer)
+2
-0.6
It is desired to multiply the numbers 0AH by 0BH and store the result in the accumulator. The numbers are available in registers B and C respectively. A part of the 8085 program for this purpose is given below:
MVI A, 00H
LOOP:.........
...............
HLT END

The sequence of instruction to be complete the program would be

A
JNZ LOOP, ADD B, DCR C
B
ADD B, JNZ LOOP, DCR C
C
DCR C, JNZ LOOP, ADD B
D
ADD B, DCR C, JNZ LOOP
4
GATE ECE 2004
MCQ (Single Correct Answer)
+2
-0.6
The number of memory cycles required to execute the following 8085 instructions
(I.) LDA 3000H
(II.) LXI D, FOF 1H
Would be
A
2 for (I) and 2 for (II )
B
4 for (I)and 3 for (II)
C
3 for ( I )and 3 for (II)
D
3 for (I) and 4 for (II)
Previous Next
Questions Asked from Marks 2
GATE ECE 2017 Set 1 (1) GATE ECE 2016 Set 1 (1) GATE ECE 2014 Set 4 (1) GATE ECE 2011 (1) GATE ECE 2010 (1) GATE ECE 2008 (1) GATE ECE 2007 (2) GATE ECE 2006 (1) GATE ECE 2005 (2) GATE ECE 2004 (3) GATE ECE 2003 (1) GATE ECE 2002 (2)
GATE ECE Subjects
Signals and Systems
Network Theory
Control Systems
Digital Circuits
General Aptitude
Electronic Devices and VLSI
Analog Circuits
Engineering Mathematics
Microprocessors
Communications
Electromagnetics