MASTER OF COMPUTER APPLICATIONS
Course Code : MCS-012
Course Title : Computer Organisation and Assembly Language Programming
Assignment Number : MCA(1)/012/Assign/2015-16
Maximum Marks : 100
Weightage : 25%
Write a simple near procedure in 8086 assembly language that receives an ASCII digit as parameter. It returns 1 if the ASCII digit is ‘Z’ else it returns 0. Make suitable assumptions, if any.
DATA SEGMENT
MSG1 DB “ENTER ALPHABET ‘Z’ : $”
MSG2 DB 10,13,”BIT RETURNED IS : $”
DATA ENDS
CODE SEGMENT
ASSUME DS:DATA,CS:CODE
START:
MOV AX,DATA
MOV DS,AX
LEA DX,MSG1
MOV AH,9
INT 21H
MOV AH,1
INT 21H
MOV BL,AL
LEA DX,MSG2
MOV AH,9
INT 21H
CALL CHECK
ADD DL,30H
MOV AH,2
INT 21H
MOV AH,4CH
INT 21H
CODE ENDS
CHECK PROC NEAR
CMP BL,’Z’
JNE SKIP
MOV DL,1
JMP DONE
SKIP:
MOV DL,0
DONE:
RET
CHECK ENDP
END START
program code :
[codesyntax lang=”asm” lines=”normal”]
DATA SEGMENT
MSG1 DB “ENTER ALPHABET ‘Z’ : $”
MSG2 DB 10,13,”BIT RETURNED IS : $”
DATA ENDS
CODE SEGMENT
ASSUME DS:DATA,CS:CODE
START:
MOV AX,DATA
MOV DS,AX
LEA DX,MSG1
MOV AH,9
INT 21H
MOV AH,1
INT 21H
MOV BL,AL
LEA DX,MSG2
MOV AH,9
INT 21H
CALL CHECK
ADD DL,30H
MOV AH,2
INT 21H
MOV AH,4CH
INT 21H
CODE ENDS
CHECK PROC NEAR
CMP BL,’Z’
JNE SKIP
MOV DL,1
JMP DONE
SKIP:
MOV DL,0
DONE:
RET
CHECK ENDP
END START
[/codesyntax]
Screen shots :-
After Execution :-
