1. Consider a typical data path of a CPU. The Program Counter (PC) contents are

Question

1. Consider a typical data path of a CPU. The Program Counter (PC) contents are copied to MAR. What happens next?
     Select one:
     a. Contents of IR are decoded.
     b. IR register of the CPU is loaded by the content of the memory location.
     c. MDR is loaded by the content of the memory location.
     d. PC is incremented such that it points to next instruction.
2. The number of bits required to represent the operation code of an instruction depends on the
    Select one:
     a. Number of operations available.
     b. Number of operands.
     c. Both a and b.
     d. None of the above.
3. Find the ratio of time taken to execute 10 instructions in a non-pipelined processor to time taken in a 4 stage pipelined processor:
      Select one:
      a. 10:14
      b. 10:13
     c. 40:13
     d. 40:14

Explanation / Answer

Please find the answers below:

1)  c. MDR is loaded by the content of the memory location.

4) a. None of the given options ; the return address is stored in link register

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