26. Single Address Instructions
The chapter discusses various instruction formats in computer architecture, focusing on the differences between single address, two address, and three address instructions. It emphasizes the importance of accumulator usage and the implications of instruction length on overall efficiency in coding. Additionally, it touches upon the operation of stack-based instructions and how these may require more computational steps compared to other formats.
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Sections
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What we have learnt
- The different types of instruction formats, including zero address, one address, two address, and three address instructions.
- The role of the accumulator in executing operations and the necessity of freeing it for subsequent operations.
- The correlation between instruction length and the number of operations required for executing a given task.
Key Concepts
- -- Instruction Format
- The structure of a machine instruction that defines how operands are represented and manipulated.
- -- Accumulator
- A register in the CPU that holds intermediate results of arithmetic and logic operations.
- -- Addressing Modes
- Techniques used to specify operands for instructions, which affect how data is accessed and utilized.
- -- StackBased Instructions
- Instructions that utilize a stack data structure for storing temporary data and intermediate results.
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