Addressing Modes Video Lecture | Computer Architecture & Organisation (CAO) - Computer Science Engineering (CSE)

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1. What are the different addressing modes in computer architecture?
Ans. The different addressing modes in computer architecture are immediate mode, direct mode, indirect mode, register mode, and register indirect mode.
2. How does immediate addressing mode work?
Ans. In immediate addressing mode, the operand value is directly specified in the instruction itself. The instruction contains the actual operand value rather than a memory address.
3. What is the purpose of indirect addressing mode?
Ans. Indirect addressing mode allows the use of memory indirect addressing, where the operand is not directly specified in the instruction. Instead, the instruction contains the memory address where the operand is stored. This mode enables more flexibility in accessing data stored in memory.
4. How does register addressing mode differ from direct addressing mode?
Ans. In register addressing mode, the operand is specified using a register instead of a memory address. The instruction directly references a register that holds the operand value. In contrast, direct addressing mode uses a memory address to access the operand value.
5. Can multiple addressing modes be used in a single instruction?
Ans. Yes, multiple addressing modes can be used in a single instruction. Some processors support complex addressing modes that allow combining different addressing modes to access operands. This flexibility enhances the efficiency and versatility of the instruction set architecture.
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