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In which addressing mode, the operand is specified in the instruction itself?
- a)Register mode
- b)Immediate modeCorrect Answer
- c)Implied mode
- d)Auto increment mode
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
In which addressing mode, the operand is specified in the instruction...
- Immediate Mode: In this mode the operand is specified in the instruction itself. In other words, an immediate-mode instruction has an operand field rather than an address field.
- The operand field contains the actual operand to be used in conjunction with the operation specified in the instruction.
- Immediate-mode instructions are useful for initializing registers to a constant value.
Example: ADD R1, 100 // 100 is operand
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In which addressing mode, the operand is specified in the instruction...
Addressing Modes in Computer Architecture
In computer architecture, addressing modes determine how the CPU accesses the operands for an instruction. There are several addressing modes, and each mode specifies a different way of locating the data or operands in memory or registers. One of these addressing modes is the immediate mode.
Immediate Mode:
In immediate mode, the operand is specified directly in the instruction itself. The value of the operand is literally encoded within the instruction. This means that the CPU does not need to access any additional memory or registers to obtain the operand. The immediate value is typically a constant or a literal value.
Example:
Let's consider the following instruction in assembly language:
MOV A, #5
In this example, the instruction MOV is used to move a value into register A. The operand, which is the immediate value 5, is specified directly in the instruction itself. The pound sign (#) is used to indicate that the following value is an immediate value.
Advantages of Immediate Mode:
1. Efficient: Immediate mode allows the CPU to access the operand directly from the instruction, eliminating the need for additional memory or register accesses. This can improve the execution time and overall efficiency of the program.
2. Compact Code: Since the operand is specified in the instruction itself, immediate mode can result in more compact code. This is particularly useful when dealing with small constant values.
Other Addressing Modes:
While immediate mode is one addressing mode where the operand is specified in the instruction itself, there are other addressing modes as well. These include:
1. Register Mode: The operand is specified in a register.
2. Implied Mode: The operand is implied or understood based on the instruction itself.
3. Auto Increment Mode: The operand is obtained by incrementing a register after the instruction is executed.
Among these addressing modes, immediate mode stands out as the addressing mode where the operand is directly specified in the instruction itself.
In computer architecture, addressing modes determine how the CPU accesses the operands for an instruction. There are several addressing modes, and each mode specifies a different way of locating the data or operands in memory or registers. One of these addressing modes is the immediate mode.
Immediate Mode:
In immediate mode, the operand is specified directly in the instruction itself. The value of the operand is literally encoded within the instruction. This means that the CPU does not need to access any additional memory or registers to obtain the operand. The immediate value is typically a constant or a literal value.
Example:
Let's consider the following instruction in assembly language:
MOV A, #5
In this example, the instruction MOV is used to move a value into register A. The operand, which is the immediate value 5, is specified directly in the instruction itself. The pound sign (#) is used to indicate that the following value is an immediate value.
Advantages of Immediate Mode:
1. Efficient: Immediate mode allows the CPU to access the operand directly from the instruction, eliminating the need for additional memory or register accesses. This can improve the execution time and overall efficiency of the program.
2. Compact Code: Since the operand is specified in the instruction itself, immediate mode can result in more compact code. This is particularly useful when dealing with small constant values.
Other Addressing Modes:
While immediate mode is one addressing mode where the operand is specified in the instruction itself, there are other addressing modes as well. These include:
1. Register Mode: The operand is specified in a register.
2. Implied Mode: The operand is implied or understood based on the instruction itself.
3. Auto Increment Mode: The operand is obtained by incrementing a register after the instruction is executed.
Among these addressing modes, immediate mode stands out as the addressing mode where the operand is directly specified in the instruction itself.
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In which addressing mode, the operand is specified in the instruction itself?a)Register modeb)Immediate modeCorrect Answerc)Implied moded)Auto increment modeCorrect answer is option 'B'. Can you explain this answer?
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