Podcast
Questions and Answers
Which addressing mode involves the operand being present in the instruction itself?
Which addressing mode involves the operand being present in the instruction itself?
What is the main disadvantage of direct addressing?
What is the main disadvantage of direct addressing?
What is the advantage of immediate addressing?
What is the advantage of immediate addressing?
In which addressing mode is the address of the operand itself used as the operand?
In which addressing mode is the address of the operand itself used as the operand?
Signup and view all the answers
How does register addressing differ from direct addressing?
How does register addressing differ from direct addressing?
Signup and view all the answers
What does the effective address represent in the context of addressing modes?
What does the effective address represent in the context of addressing modes?
Signup and view all the answers
What is the advantage of register addressing?
What is the advantage of register addressing?
Signup and view all the answers
Which addressing mode allows for setting initial values of variables or defining constants?
Which addressing mode allows for setting initial values of variables or defining constants?
Signup and view all the answers
How does register indirect addressing differ from indirect addressing?
How does register indirect addressing differ from indirect addressing?
Signup and view all the answers
What does 'A' represent in the context of explaining addressing modes?
What does 'A' represent in the context of explaining addressing modes?
Signup and view all the answers
Why is direct addressing considered simple?
Why is direct addressing considered simple?
Signup and view all the answers
What is the limitation of register addressing?
What is the limitation of register addressing?
Signup and view all the answers
Study Notes
Addressing Modes
- Immediate Addressing: The operand is present in the instruction itself, and the main advantage is that it allows for setting initial values of variables or defining constants.
Disadvantages of Addressing Modes
- Direct Addressing: The main disadvantage is that it requires a fixed amount of memory, which can be limiting.
Effective Address
- Effective Address: Represents the actual address of the operand used in the instruction.
Register Addressing
- Register Addressing: Differently from direct addressing, it doesn't require a fixed amount of memory, and the advantage is that it provides flexibility in memory usage.
- Limitation: The limitation is that it can only access a limited number of registers.
Indirect Addressing
- Indirect Addressing: The address of the operand itself is used as the operand.
- Register Indirect Addressing: Differently from indirect addressing, it uses a register to hold the address of the operand.
Explanation of Addressing Modes
- 'A' Representation: In the context of explaining addressing modes, 'A' represents the address of the operand.
Characteristics of Addressing Modes
- Direct Addressing: Considered simple because it only requires a fixed amount of memory.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Explore how bits in an instruction are organized to define operand addresses and operations. Learn about common addressing techniques like Immediate, Direct, Indirect, Register, Register Indirect, Displacement, and Stack. Understand the concept of effective address in computation and branch instructions.
