Chapter one introduction to pipelined processors
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Chapter One Introduction to Pipelined Processors PowerPoint PPT Presentation


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Chapter One Introduction to Pipelined Processors. Principle of Designing Pipeline Processors. (Design Problems of Pipeline Processors). Internal Data Forwarding and Register Tagging. Internal Forwarding and Register Tagging.

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Chapter One Introduction to Pipelined Processors

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Chapter one introduction to pipelined processors

Chapter One Introduction to Pipelined Processors


Principle of designing pipeline processors

Principle of Designing Pipeline Processors

(Design Problems of Pipeline Processors)


Internal data forwarding and register tagging

Internal Data Forwarding and Register Tagging


Internal forwarding and register tagging

Internal Forwarding and Register Tagging

  • Internal Forwarding: It is replacing unnecessary memory accesses by register-to-register transfers.

  • Register Tagging: It is the use of tagged registers for exploiting concurrent activities among multiple ALUs.


Internal forwarding

Internal Forwarding

  • Memory access is slower than register-to-register operations.

  • Performance can be enhanced by eliminating unnecessary memory accesses


Internal forwarding1

Internal Forwarding

  • This concept can be explored in 3 directions:

  • Store – Load Forwarding

  • Load – Load Forwarding

  • Store – Store Forwarding


Store load forwarding

Store – Load Forwarding


Load load forwarding

Load – Load Forwarding


Store store forwarding

Store – Store Forwarding


Example

Example

EXAMPLE


Example1

Example

EXAMPLE


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