1
GATE ECE 2007
MCQ (Single Correct Answer)
+2
-0.6
An 8085 assembly language program is given below.
Line 1: MVI A, B5H
2: MVI B, 0EH
3: XRI 69H
4: ADD B
5: ANI 9BH
6: CPI 9FH
7: STA 3010H
8: HLT

After execution of line of the program, the status of the CY and Z flags will be

A
CY= 0, Z=0
B
CY= 0, Z=1
C
CY= 1, Z=0
D
CY= 1, Z=1
2
GATE ECE 2006
MCQ (Single Correct Answer)
+2
-0.6
Following is the segment of a 8085 assembly Language program:
LXI SP, EFFF H
CALL 3000 H
3000H: LXI H, 3CF4H
PUSH PSW
SPHL
POP PSW
RET

On completion of RET execution, the contents of SP is

A
3CF0H
B
3CF8H
C
EFFDH
D
EFFFH
3
GATE ECE 2005
MCQ (Single Correct Answer)
+2
-0.6

Consider an 8085 microprocessor system


The following program starts at locaton 0100H.
LXI SP, 00FF
LXI H, 0107
MVI A, 20H
SUB M

The contents of accumulator wnen the program counter reaches 0109H is

A
20H
B
02H
C
00H
D
FFH.
4
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
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