1
GATE ECE 2008
MCQ (Single Correct Answer)
+2
-0.6
An 8085 executes the following instructions
2710 LXI H, 30A0H
DAD H
PCHL

All addresses and constants are in Hex. Let PC be the contents of the program counter and HL be the contents of the HL register pair just after executing PCHL.

Which of the following statements is correct.
A
PC 2715H HL 30A0H
B
PC 30A0H HL 2715H
C
PC 6140H HL 6140H
D
PC 6140H HL 2715H
2
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

The contents of the accumulator just after execution of the ADD instruction in line 4 will be

A
C3H
B
EAH
C
DCH
D
69H
3
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
4
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
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