Question

Identify the true statement with reference to immediate addressing mode

• A. In this mode, data is accessed by specifying the register name in which it is stored.
• B. In this mode, value of operand is held within the instruction itself.
• C. In this mode, memory location of data is stored in a register.
• D. This mode is useful for accessing fixed memory locations such as memory mapped I/O devices.

Hint:

When studying addressing modes, focus on how the operand is referenced in the instruction and the impact it has on the instruction’s execution time.

Answer 1

The Correct Option is A

In immediate addressing mode, the operand is directly specified within the instruction, and it refers to the data in the register specified by the instruction itself. This is in contrast to other addressing modes where the operand is stored in memory or registers. This addressing mode is fast since no additional memory lookup is required.