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15. Indirect Mode
The chapter discusses various addressing modes in computer architecture, focusing on their mechanisms and processes for executing instructions. Key modes such as immediate, direct, indirect, and register indirect are explained, illustrating the control stages involved in loading operands. The comparative efficiency of these modes is highlighted, particularly the differences in the number of steps required for data retrieval and instruction execution.
Sections
The indirect mode in computer architecture uses memory addresses as operands that point to other addresses, adding complexity to instruction fetching.
The Register Indirect Mode is an addressing mode that uses the content of a register to specify the address of the operand in memory, allowing for more flexible and efficient memory access.
This section describes the various addressing modes used in computer architecture, emphasizing indirect and register indirect modes.
This section summarizes the key concepts learned regarding addressing modes and introduces the next unit.
Different addressing modes have varying complexities and efficiency in instruction execution.
The stages involved in loading and executing instructions can differ significantly based on the addressing mode employed.
Understanding each addressing mode is crucial for designing effective instructional formats within a CPU architecture.
Addressing Modes
Techniques to specify operand addresses in computer instructions, which influence how instructions fetch and operate on data.
Indirect Addressing
A mode where the address of the operand is specified in a memory location, requiring additional steps to fetch the required data.
Register Indirect Mode
An addressing mode where a register contains the address of the operand, resulting in fewer stages required for instruction execution compared to memory indirect.
Memory Buffer Register (MBR)
A register that holds data temporarily while it is being transferred between the CPU and memory.
Memory Address Register (MAR)
A register that holds the address of the memory location to be accessed.
Practice Exercises
Total Questions
2
Estimated Time
4 min
Passing Score
70%
Instructions
- Read each question carefully
- You can use hints if you need help
- Complete all questions before submitting
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