Post interrupts - computer architecture, Computer Engineering

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Post interrupts - computer architecture:

Post interrupts

  • Exact interrupts
  • examine interrupt bit on entering WB
  • Longer latency

Handle immediately

  •   interrupt may take place in order different from sequential CPU
  •   not completely precise
  •   May cause implementation headaches!

Other complications

  •   odd bits of state (for instance :CC)
  •   early-writes (for instance auto increment)
  •   out-of-order execution
  •   dynamic scheduling
  •   instruction buffers and prefetch logic

 

 

 


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