Memory Data Retrieve by Processor ?

Discussion in 'Computing and Networks' started by maverick_spear, Aug 16, 2017.

  1. maverick_spear

    Thread Starter New Member

    Aug 16, 2017
    10
    0
    Hi I am studying the computer science Hardware. I have one question. I studied processor architecture and came to know that the processor sends the request of read and write commands to the memory unit if it doesn't see the data or instruction in its registers. The processor use to send these commands in bulk as these requests are buffer some where in the memory controller hub. But when the memory return back the data it simply sends the data so how does the processor knows that this data or instruction belongs to specific process or what mechanisms it will deployed to classify the information coming back from the memory or I/O. For example the processor sends the address and data to be fetched back from I/O and then again it sends the request to fetch but this time from memory. When the data returns its simply the bits so how does the processor classify that the particular information belongs to either the process deals with I/O or memory.
     
  2. ScottWang

    Moderator

    Aug 23, 2012
    6,293
    973
    I think you better show the circuit and which uC?
     
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