MICROPROCESSOR AND MICROCONTROLLER

8085 MICROPROCESSOR

FEATURE OF 8085

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
MOV CX, [BX+DI] type of addressing mode
A
register relative addressing mode
B
base plus index addressing mode
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -Register indirect addressing mode: The mode of addressing is known as register indirect mode. In this addressing mode, the offset address of data is in either BX or SI or DI Register. The default segment is either DS or ES. Example: MOV AX, [BX].

Detailed explanation-2: -Base-plus-index addressing is similar to indirect addressing because it indirectly addresses memory data. In the 8086, this type of addressing uses one base register (BP or BX) and one index register (DI or SI) to indirectly address memory.

Detailed explanation-3: -Base-plus-index addressing Transfers a byte or word between a register and the memory location addressed by a base register (BP or BX) plus an index register (DI or SI). (Example: the MOV [BX+DH, CL instruction copies the hytcsized contents of register CL into the data segment memory location addressed by BX plus DI.)

Detailed explanation-4: -Implied Mode. Immediate Mode. Register Mode. Register Indirect Mode. Autodecrement Mode. Autoincrement Mode. Direct Address Mode. Indirect Address Mode. More items

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