Anonymous
Feb 4
Briefly describe four different types of instruction set ?
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Feb 4
1. Complex Instruction Set Computer (CISC): This type of instruction set architecture is designed to perform complex operations with a single instruction. It includes a wide range of instructions that can perform multiple tasks, such as arithmetic operations, memory access, and control flow. CISC instructions are typically longer and more complex, requiring more memory and execution time.
2. Reduced Instruction Set Computer (RISC): RISC instruction set architecture focuses on simplicity and efficiency. It uses a smaller set of simple instructions that can be executed in a single clock cycle. RISC processors often rely on optimizing compilers to break down complex operations into simpler instructions. This architecture aims to reduce the complexity of the hardware, improve performance, and enable faster execution.
3. Very Long Instruction Word (VLIW): VLIW instruction set architecture is designed to exploit parallelism in hardware. It allows multiple instructions to be executed simultaneously by packing them into a single long instruction word. VLIW processors rely on compilers to analyze the code and schedule instructions in parallel. This architecture aims to achieve high performance by maximizing instruction-level parallelism.
4. Superscalar: Superscalar instruction set architecture is an extension of the RISC architecture that allows multiple instructions to be executed simultaneously. It includes multiple execution units, such as multiple arithmetic logic units (ALUs) and floating-point units (FPUs), which can operate independently. Superscalar processors use sophisticated hardware techniques, such as out-of-order execution and branch prediction, to exploit instruction-level parallelism and improve performance.
2. Reduced Instruction Set Computer (RISC): RISC instruction set architecture focuses on simplicity and efficiency. It uses a smaller set of simple instructions that can be executed in a single clock cycle. RISC processors often rely on optimizing compilers to break down complex operations into simpler instructions. This architecture aims to reduce the complexity of the hardware, improve performance, and enable faster execution.
3. Very Long Instruction Word (VLIW): VLIW instruction set architecture is designed to exploit parallelism in hardware. It allows multiple instructions to be executed simultaneously by packing them into a single long instruction word. VLIW processors rely on compilers to analyze the code and schedule instructions in parallel. This architecture aims to achieve high performance by maximizing instruction-level parallelism.
4. Superscalar: Superscalar instruction set architecture is an extension of the RISC architecture that allows multiple instructions to be executed simultaneously. It includes multiple execution units, such as multiple arithmetic logic units (ALUs) and floating-point units (FPUs), which can operate independently. Superscalar processors use sophisticated hardware techniques, such as out-of-order execution and branch prediction, to exploit instruction-level parallelism and improve performance.
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