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 (B)</p> Signup and view all the answers

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

<p>Constant value (B)</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) (B)</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 (C)</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 (C)</p> Signup and view all the answers

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

<p>3 (C)</p> Signup and view all the answers

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

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

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

<p>Constant value (C)</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 (D)</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 (B)</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) (D)</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 (A)</p> Signup and view all the answers

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

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

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

<p>X (B)</p> Signup and view all the answers

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

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

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