An Assembly Language program to print sequence of random numbers – IGNOU MCA Assignment 2014-15

By | July 19, 2014

MASTER OF COMPUTER APPLICATIONS
Course Code : MCSL-017
Course Title : C and Assembly Language Programming
Assignment Number : MCA(1)/L017/Assign/2014-15
Maximum Marks : 100
Weightage : 25%

 

Write a program in assembly language to print an infinite sequence of pseudo-random numbers. 

 

DATA SEGMENT
MSG1 DB 10,13,’RANDOM NUMBERS ARE : $’
MSG2 DB 10,13,’ $’
RES DB 10 DUP (‘$’)
DATA ENDS

CODE SEGMENT
ASSUME DS:DATA CS:CODE
START:
MOV AX,DATA
MOV DS,AX

LEA DX,MSG1
MOV AH,9
INT 21H

LEA DX,MSG2
MOV AH,9
INT 21H
NXT:
MOV AH,2CH ; Set time function
INT 21H

MOV AX,DX ; DH=seconds,DL=hundredths of second
XOR AH,AH

LEA SI,RES
CALL HEX2DEC

LEA DX,RES
MOV AH,9
INT 21H

LEA DX,MSG2
MOV AH,9
INT 21H

JMP NXT

MOV AH,4CH
INT 21H
CODE ENDS

HEX2DEC PROC NEAR
MOV CX,0
MOV BX,10

LOOP1: MOV DX,0
DIV BX
ADD DL,30H
PUSH DX
INC CX
CMP AX,9
JG LOOP1

ADD AL,30H
MOV [SI],AL

LOOP2: POP AX
INC SI
MOV [SI],AL
LOOP LOOP2
RET
HEX2DEC ENDP

END START

Program Code :

[codesyntax lang=”asm” lines=”normal”]

DATA SEGMENT
MSG1 DB 10,13,’RANDOM NUMBERS ARE : $’
MSG2 DB 10,13,’ $’
RES DB 10 DUP (‘$’)
DATA ENDS

CODE SEGMENT
ASSUME DS:DATA CS:CODE
START:
MOV AX,DATA
MOV DS,AX

LEA DX,MSG1
MOV AH,9
INT 21H

LEA DX,MSG2
MOV AH,9
INT 21H
NXT:
MOV AH,2CH ; Set time function
INT 21H

MOV AX,DX ; DH=seconds,DL=hundredths of second
XOR AH,AH

LEA SI,RES
CALL HEX2DEC

LEA DX,RES
MOV AH,9
INT 21H

LEA DX,MSG2
MOV AH,9
INT 21H

JMP NXT

MOV AH,4CH
INT 21H
CODE ENDS

HEX2DEC PROC NEAR
MOV CX,0
MOV BX,10

LOOP1: MOV DX,0
DIV BX
ADD DL,30H
PUSH DX
INC CX
CMP AX,9
JG LOOP1

ADD AL,30H
MOV [SI],AL

LOOP2: POP AX
INC SI
MOV [SI],AL
LOOP LOOP2
RET
HEX2DEC ENDP

END START

[/codesyntax]

Screen shots :-

Asm_program_Random_Number

After Execution :-

Asm_program_Random_Number_Out

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