Addressing Modes in 8051
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- Question 1 of 20
1. Question
The _____ refers to the way in which the operand of an instruction is specified.
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2. Question
Which of the following are addressing modes of 8051?
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3. Question
Match the examples with the addressing modes:
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- MOV A,#25H
- MOV A,B
- MOV A,30H
- MOV A,@R0
- Immediate addressing mode
- Register addressing mode
- Direct addressing mode
- Indirect addressing mode
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4. Question
The source and destination registers must match in size.
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5. Question
The address register for storing the 16-bit addresses can only be
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6. Question
MOV R0,R1 is a valid instruction.
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7. Question
The address register for storing the 8-bit addresses can be ______
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8. Question
The instruction, ADD A, R7 is an example of _____
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9. Question
In which of these addressing modes, a constant is specified in the instruction, after the opcode byte?
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10. Question
The only memory which can be accessed using indexed addressing mode is ____
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11. Question
The data address of look-up table is found by adding the contents of ______
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12. Question
What does the symbol ‘#’ represent in the instruction MOV A, #55H ?
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13. Question
Which addressing mode executes its instructions within CPU without the necessity of reference memory for operands?
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14. Question
Which addressing mode is used in pushing or popping any element on or from the stack?
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15. Question
How is the effective address of base-register calculated?
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16. Question
____ operator is used while assigning any instruction as register indirect instruction.(in sign)
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17. Question
What is the advantage of register indirect addressing mode?
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18. Question
Which of the following comes under the indexed addressing mode?
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19. Question
____ and ____ are the only registers that can be used as pointers in register addressing modes.
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20. Question
The storage of addresses that can be directly accessed is ____
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