Microprocessor organization

control

arithmeticlogicunit

ma

r

md

r

registerfile

source bus

destination bus

source bus

• Controller

  • inputs: from ALU (conditions), instruction read from memory
  • outputs: select inputs for registers, ALU operations, read/write to memory

• Data-path

  • register file to hold data
  • arithmetic logic unit to manipulate data
  • program counter (to implementrelative jumps and increments)

• Interface

  • data to/from memory(address and data registersin data path)
  • read/write signalsto memory (from control)

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