- Whenever a compare operation is performed the result of such an operation reflects in one of the six status flags CF, AF, OF, PF, SF and ZF. In 8085, the source operand address for instruction ADD M is given by HL register pair. Algorithm: shift all bits left, the bit that goes off is set to CF and previous value of CF is inserted to the right-most position. It also has the widest variety of parameters; so it the assembler programmer can use MOV effectively, the rest of the commands are easier to understand. The 8086 provides many arithmetic operations: addition, subtraction, negation,multiplication and comparing two values.ADD :The add instruction adds the contents of the source operand to the destinationoperand.Eg. Submitted by Uma Dasgupta, on February 10, 2020 . Instruction Set of 8086 with Examples Sreejith Hrishikesan November 02, 2019. 8086/8088 Addressing Modes, Instruction Set & Machine Codes. Submitted by Uma Dasgupta, on December 01, 2018 . A group of instructions are arranged in a pre defined manner to perform an operation. Here, we are going to learn about the Different addressing modes of 8086 microprocessor. The instruction format in this type of computer uses one address field. In 8086 processor, there are seven groups of instructions… Introduction: Addressing mode tells us what is the type of the operand and the way they are accessed from the memory for execution of an instruction and how to fetch particular instruction from the memory. Many times the Instruction Format of 8085 specifies the address of the source operand so that operand(s) can be accessed and operated by the 8085 according to the instruction. The various characteristics of the Compare (CMP) instruction are as follows: - The CMP instruction can be used to compare two 8-bit or two 16-bit numbers. Introduction: In this article, we are going to discuss about the 6 general formats of instructions. ADD AX, 0100HADD AX, BXADD AX, [SI]ADD AX, [5000H]ADD [5000H], 0100HADD 0100HADC : Add with CarryThis instruction performs the same operation as ADD instruction… For example, the instruction that specifies an arithmetic addition is defined by an assembly language instruction as ADD. Where X is the address of the operand. Figure below shows the instruction format of 8086:

2 Addressing Modes • When the 8088 executes an instruction, it performs the specified function on data • These data, called operands, – May be a part of the instruction

The ADD instruction in this case results in the operation AC ← AC + M[X]. Instruction Set of 8086: An instruction defines the type of the operation. The 8086 instruction sizes vary from one to six bytes. Mention the characteristics of the CMP instructions.