MAT2006 Chapter Notes -Addressing Mode, Intel 8086, Operand

• School: Vellore Institute of Technology - VIT
• Department: Engineering
• Course: MAT2006

Document Summary

The different ways in which a source operand is denoted in an instruction is known as addressing modes. There are 8 different addressing modes in 8086 programming ". The addressing mode in which the data operand is a part of the instruction itself is known as immediate addressing mode. Mov cx, 4929 h, add ax, 2387 h, mov al, ffh. It means that the register is the source of an operand for an instruction. Mov cx, ax ; copies the contents of the 16-bit ax register into. The addressing mode in which the effective address of the memory location is written directly in the instruction. This addressing mode allows data to be addressed at any memory location through an offset address held in any of the following registers: bp, bx, di & si. Mov ax, [bx] ; suppose the register bx contains 4895h, then the contents.