Basic I/O Operations Functional Unit in Computers
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Questions and Answers

What is the effective address in the Index mode (Ri, Rj)?

  • Difference of the contents of registers Ri and Rj
  • Sum of the contents of registers Ri and Rj (correct)
  • Content of register Rj
  • Content of register Ri

    • What is another version of the Index mode that uses two registers and a constant?

  • (Ri, Rj)
  • (X + Ri, Rj)
  • X(Ri + Rj)
  • X(Ri, Rj) (correct)

    • In X(PC), what does PC represent?

  • Program Counter (correct)
  • Permanent Counter
  • Processing Center
  • Primary Control

    • How does the Index mode provide more flexibility in accessing operands?

    <p>By allowing changes to both components of the effective address</p> Signup and view all the answers

    What does X represent in X(Ri, Rj)?

    <p>Constant value</p> Signup and view all the answers

    Which part of the Index mode helps access multiple components inside items in a record?

    <p>(Ri, Rj)</p> Signup and view all the answers

    What is the purpose of using X(PC) in addressing?

    <p>Addressing relative locations from the current position</p> Signup and view all the answers

    In what way does X(Ri, Rj) differ from (Ri, Rj)?

    <p>(Ri, Rj) involves a constant X</p> Signup and view all the answers

    What dimension does X(Ri, Rj) help implement in memory addressing?

    <p>3</p> Signup and view all the answers

    Which register is commonly used as a base register in indexed addressing modes?

    <p>Program Counter (PC)</p> Signup and view all the answers

    How is the Index mode (Ri, Rj) different from X(Ri, Rj)?

    <p>The former accesses a memory location X bytes away, while the latter accesses based on the sum of constant X and register values</p> Signup and view all the answers

    Which component in the Index mode (Ri, Rj) helps provide flexibility in accessing operands?

    <p>Sum of Ri and Rj</p> Signup and view all the answers

    What does X represent in X(Ri, Rj)?

    <p>Constant value</p> Signup and view all the answers

    How does using X(PC) in addressing differ from using X(Ri, Rj)?

    <p>X(PC) accesses based on PC value only, while X(Ri, Rj) accesses based on the sum of register values and constant X</p> Signup and view all the answers

    What role does the base register play in Index mode?

    <p>It specifies the beginning of an item in a record</p> Signup and view all the answers

    In which version of the Index mode are two registers and a constant used?

    <p>(Ri, Rj, X)</p> Signup and view all the answers

    How does the second register in Index mode contribute to operand access flexibility?

    <p>By containing the offset value X</p> Signup and view all the answers

    What does (Ri, Rj) represent in Index mode addressing?

    <p>Sum of two general-purpose registers</p> Signup and view all the answers

    Which part of X(Ri, Rj) indicates the distance from a memory location?

    <p>X</p> Signup and view all the answers

    What type of array structure does (Ri, Rj) help implement?

    <p>Three-dimensional array</p> Signup and view all the answers

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