COMPUTER SCIENCE AND ENGINEERING
COMPUTER ARCHITECTURE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Indexed with offset
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Relative
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Direct
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Both Indexed with offset and direct
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Detailed explanation-1: -Explanation: The relative addressing mode is used for this since it directly updates the PC.
Detailed explanation-2: -The PC-relative addressing mode can be used to load a register with a value stored in program memory a short distance away from the current instruction. It can be seen as a special case of the “base plus offset” addressing mode, one that selects the program counter (PC) as the “base register".
Detailed explanation-3: -Indexed Addressing Mode or Index Register Relative Addressing Mode.
Detailed explanation-4: -Register mode: In register addressing the operand is placed in one of 8 bit or 16 bit general purpose registers. The data is in the register that is specified by the instruction.
Detailed explanation-5: -Relative based indexed addressing mode-In this mode, the address of the operand is calculated as the sum of base register, index register and 8 bit or 16 bit displacement. This instruction moves a byte from the address pointed by BX + DI + 20H in data segment to CL.