Question

Write and run (using appropriate calling program) a near procedure in 8086 assembly language that checks if the input parameter has a value zero or not. If the value is zero subroutines terminates the program else returns a value 1 in AL register.

Answer 1

"DATA SEGMENT

MSG1 DB 10,13,”ENTER ANY ASCII VALUE : $”

MSG2 DB 10,13,”PRINTING AL VALUE : $”

DATA ENDS

CODE SEGMENT

ASSUME DS:DATA,CS:CODE

START:

MOV AX,DATA

MOV DS,AX

LEA DX,MSG1

MOV AH,9

INT 21H

CALL PRINT_AL

MOV AH,4CH

INT 21H

CODE ENDS

PRINT_AL PROC NEAR

MOV AH,1

INT 21H

MOV BL,AL

The whole concept of this question will follow the following text: LEA DX,MSG2

MOV AH,9

INT 21H

MOV DL,BL

MOV AH,2

INT 21H

RET

PRINT_AL ENDP

END START"