Instruction set of 8086-microprocessor, Assembly Language

Instruction set of 8086 :

The 8086/8088 instructions are categorized into the following major types. This section describes the function of each of the instructions with appropriate examples wherever necessary.

(i) Data Copy/Transfer Instructions: This  type of instructions are utilized to transfer data from source operand  to destination operand. All the store, load, move, exchange output and input instructions belong to this category.

(ii) Arithmetic and Logical Instructions: All the instructions performing, logical, arithmetic, decrement, increment, compares and scan instructions belong to this category.

(iii) Branch Instructions: These instructions transfer control of execution to the decided address. All the call, interrupt, jump and return instructions belong to this class.

(iv) Loop Instructions: If these instructions contain REP prefix with CX used as county register, they can be utilized to implement conditional   and unconditional   loops. The LOOPNZ, LOOP and LOOPZ instructions belong to this category. These are useful to implement different type of loop structures.

(v) Machine Control Instructions: These instructions control the machine status. HLT, WAIT LOCK and NOP, instructions belong to this class.

(vi) Flag Manipulation Instructions: All the instructions which directly affect the flag register they come under this group of instructions.  Instructions like STD, CLD, STI, CLI etc.  Belong to this category of instructions.

(vii) Shift  and  Rotate  Instructions: These  instructions  involve  the rotation and bitwise shifting in either direction with or without a count in CX.

(viii) String Instructions: These instructions involve various string manipulation operations like  move, scan, load, store ,compare,  etc. These instructions are just to be operated upon the strings.

 

Posted Date: 10/11/2012 12:37:25 AM | Location : United States







Related Discussions:- Instruction set of 8086-microprocessor, Assignment Help, Ask Question on Instruction set of 8086-microprocessor, Get Answer, Expert's Help, Instruction set of 8086-microprocessor Discussions

Write discussion on Instruction set of 8086-microprocessor
Your posts are moderated
Related Questions
Write a MC68H12 assembly language program to find the largest number in an array of ten 8-bit numbers. The array is stored in memory locations starting at address $1100. Use branch

implement the following c++ code in assembly language using the block-structured .IF and .while directives

Will be needing help with assembly language assignments over the course of 4 weeks

1. Write an assembly program that adds the elements in the odd indices of the following array. Use LOOP. What is the final value in the register? array1 DWORD 10, 20, 30, 40, 50, 6

SBB: Subtract  with Borrow  :- The subtract with borrow instruction subtracts the source operand and the borrow flag (CF) which might reflect the result of the past calculations,

DEC:  Decrement :- The decrement instruction subtracts 1 from the contents of the particular memory location or register. All the conditions code flags except carry flag are affec

I NEED PROJECT OF COFE SHOP

The 486 Introduced in the year 1989 the 80486 did not feature any radically new processor technology. Instead, it joints a 386 processor, a cache memory controller and a math c

Interrupt Priority Management The interrupt priority management logic indicated in given figure can be implemented in several ways. It does not required to be present in system

I am assigned to implement dijkstra algorithm in assembly language. I am not a novice in assembly. I need help implementing it.Kindly if anyone then please.