8086 programs

Question 1

16bit addition

Answer 1

MOV AX,1111H
MOV BX,2222H
ADD AX,BX
MOV [2000],AX
HLT
F4

Question 2

16 bit subtraction

Answer 2

MOV AX,2222H
MOV BX,1111H
SUB AX,BX
MOV [2002],AX
HLT

Question 3

16 bit multiplication

Answer 3

MOV AX,3H
MOV BX,2H
MUL BX
MOV [2004],AX
HLT

Question 4

16 bit division

Answer 4

MOV AX,0006H
MOV BX,0003H
DIV BX
MOV [2006],AX
HLT

Question 5

addition with carry using condition
To add two 16 bit numbers stored in [1200H]-[1201H] and [1202H]-[1203H]

Answer 5

MOV AX,[1200]
MOV BX,[1202]
MOV CL,00
ADD AX,BX
JNC 104D
INC CL
MOV [2008],AX
MOV [200A],CL
HLT

Question 6

average of three numbers

Answer 6

MOV BX,3H
MOV AX,2H
ADD AX,2H
ADD AX,2H
DIV BX
MOV [2200], AX
HLT

Question 7

sum of array of numbers

Answer 7

MOV CX,05H
MOV AX, 0000H
MOV BX, 0000H
MOV SI,3200
REPEAT: MOV BL,[SI]
ADD AX, BX
INC SI
DEC CX
JNZ REPEAT
JNZ 1227
MOV DI, 2202H
MOV [DI],AX
HLT

Question 8

sum of corresponding elements of two arrays

Answer 8

MOV SI,3206
MOV CL, [SI]
MOV CH, 00H
INC SI
MOV DI, 3217
MOV SI,3206
MOV CL, [SI]
MOV CH, 00H
INC SI
MOV DI, 3217
MOV AL,[SI]
ADD AL,[DI]
MOV [SI], AL
INC SI
INC DI
LOOP 1244
HLT