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Unit-1 8085 Architecture ( Assessment Test )

Authored by Sri Dept.

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Unit-1 8085 Architecture ( Assessment Test )
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16 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many flags are present in the 8085 microprocessor?

3
5
6
8

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is not a flag in the 8085 microprocessor?

Zero (Z) flag
Carry (CY) flag
Overflow (OF) flag
Parity (P) flag

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the Parity (P) flag indicate in the 8085?

Carry generation
The number of 1s in the result is even or odd
Negative result
Overflow

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What will be the status of the Zero (Z) flag after executing the following instructions? MVI A, 00H ORA A

Z = 1
Z = 0
Z = Indeterminate
None of theanswers

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

MVI A, 85H ADD A After execution, which flags will be set if the result is 0AH?

CY = 0, Z = 0, P = 1
CY = 1, Z = 0, P = 1
CY = 0, Z = 1, P = 0
CY = 1, Z = 1, P = 0

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The ALE (Address Latch Enable) signal in the 8085 microprocessor is active during which T-state?

T2 of the Memory Read cycle
T3 of the Instruction Decode cycle
T1 of the Opcode Fetch cycle
T2 of the Data Write cycle

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a timing diagram, what is indicated by the falling edge of the ALE signal?

End of instruction
Beginning of the Address phase
Completion of the Data phase
End of the Address phase

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