Question

Which of the following is true of base-register addressing mode? (i) It is useful in creating self-relocating code. (ii) If it is included in an instruction set architecture, then an additional ALU is required for effective address calculation. (iii) The amount of displacement depends on the content of base register. (A) (i) only (B) (ii) only (C) (i) and (ii) only (D) (ii) and (iii) only

Name: Problem 14, Chapter 6: Computer Science and Information Technology
Uploaded: 2023-01-26T22:13:51-08:00
Duration: 53 s
Channel: James Kiss
Description: Which of the following is true of base-register addressing mode? (i) It is useful in creating self-relocating code. (ii) If it is included in an instruction set architecture, then an additional ALU is required for effective address calculation. (iii) The amount of displacement depends on the content of base register. (A) (i) only (B) (ii) only (C) (i) and (ii) only (D) (ii) and (iii) only

   Which of the following is true of base-register addressing mode?
(i) It is useful in creating self-relocating code.
(ii) If it is included in an instruction set architecture, then an additional ALU is required for effective address calculation.
(iii) The amount of displacement depends on the content of base register.
(A) (i) only
(B) (ii) only
(C) (i) and (ii) only
(D) (ii) and (iii) only

Computer Science and Information Technology

Trishna Knowledge… 2018 Edition

Chapter 6, Problem 14

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Solved by Expert James Kiss

01/26/2023

Step 1

This mode is useful in creating self-relocating code, as the operand's address is based on the content of a base register and a displacement value rather than being a fixed address in memory. Show more…

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Which of the following is true of base-register addressing mode? (i) It is useful in creating self-relocating code. (ii) If it is included in an instruction set architecture, then an additional ALU is required for effective address calculation. (iii) The amount of displacement depends on the content of base register. (A) (i) only (B) (ii) only (C) (i) and (ii) only (D) (ii) and (iii) only

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Key Concepts

Base-Register Addressing Mode

A technique used in computer architectures where the effective address of an operand is determined by adding a constant displacement to the value stored in a base register. This scheme simplifies memory addressing and supports features such as relocation and memory segmentation.

Self-Relocating Code

A kind of program code designed to execute correctly regardless of its absolute memory location. Base-register addressing is beneficial for self-relocating code because the addresses are computed relative to a register, making it easier to move or load the code into different areas of memory without modification.

Effective Address Calculation

The process by which a computer system computes the actual memory address from a combination of a base register and an offset or displacement. This operation is typically performed using the system’s standard arithmetic unit rather than requiring an additional specialized ALU.

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