Structure / Function Processor 2

Give an example of pipelining

• Client computers send multiple requests to a web server. Responses must be returned in the same sequence that the requests were received.

• When a printer has to deal with multiple print jobs. They have to be stored in memory sequentially (in a priority queue) and they printed one by one.

• One instruction is being fetched, the previous instruction is being decoded and the first instruction is being executed.

  
  

• One instruction is being decoded, the previous instruction is being decoded and the first instruction is being fetched.

Stores the address of the memory location from which data or an instruction is fetched or stored.

• MAR (Memory Address Register)

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  • MDR (Memory Data Register)

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  • Program Counter

• Accumulator

• CIR (Current Instruction Register)

Stores the data or instruction read from or written to RAM.

• MAR (Memory Address Register)

• 
  

  • MDR (Memory Data Register)

• 
  

  • Program Counter

• Accumulator

• CIR (Current Instruction Register)

Stores the address of the next instruction to be fetched.

• MAR (Memory Address Register)

• 
  

  • MDR (Memory Data Register)

• 
  

  • Program Counter

• Accumulator

• CIR (Current Instruction Register)

Stores the result of a calculation.

• MAR (Memory Address Register)

• 
  

  • MDR (Memory Data Register)

• 
  

  • Program Counter

• Accumulator

• CIR (Current Instruction Register)

Holds the instruction that is currently being decoded and executed.

• MAR (Memory Address Register)

• 
  

  • MDR (Memory Data Register)

• 
  

  • Program Counter

• Accumulator

• CIR (Current Instruction Register)

Has a single Data Bus that transmits both data and instructions

• Von Neumann Architecture

• Contemporary (Harvard) Architecture

Has a single Core

• Von Neumann Architecture

• Contemporary (Harvard) Architecture

Has a single Control Unit

• Von Neumann Architecture

• Contemporary (Harvard) Architecture

Has a single ALU

• Von Neumann Architecture

• Contemporary (Harvard) Architecture