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Computer Systems Architecture - CISC, RISC, and EPIC
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Computer Systems Architecture
Alicia, Jack, and Luke
CISC
Complex Instruction Set Computing
CISC
WHAT IS CISC?
CISC is a microprocessor which works on multiple, smaller parts of the task- it uses multiple CPU cycles.
For bigger tasks than RISC due to how it handles CPU cycles
RISC
RISC
RISC is a microprocessor which focuses on the whole task in one go - uses less cycles than CISC
RISC is meant for small tasks, and is used as a basis for mobile phones (ARM - Advanced Risc Machine)
EPIC
Explicitly Parallel Instruction Computing
EPIC
This is a 64-bit microprocessor instruction set which provides up to 128 general and floating-point unit registers.
(FPU is a math coprocessor that can manipulate numbers much more quickly than the basic microprocessor circuitry).
This microprocessor uses a combination of speculative loading, prediction and explicit parallelism to complete its computing tasks.
Intel utilizes the 64-bit microprocessor architecture in the development of their CPU’s. this image below demonstrates the architecture in a intel processor (using the EPIC architecture.)