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Module 2: x86 Architecture, CPU Control, I/O, Memory System Design

20232m

The addressing mode, where you directly specify the operand value is:
(i) Immediate
(ii) Direct
(iii) Definite
(iv) Relative

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Answer: (i) Immediate

Explanation:

  • Immediate addressing mode - operand value is directly specified in instruction field itself (e.g., MVI A, 05H, ADD #5). No memory reference.
  • Direct: specifies address of operand.
  • Definite not standard; Relative: PC + offset.

Hence direct value = Immediate.

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