p86 AH10 AH9

.386
STACK SEGMENT USE32
 DB 200 DUP(0)
STACK ENDS


DATA SEGMENT USE16
BUF DB 80
    DB ?
    DB 80 DUP(0)
DATA ENDS


CODE SEGMENT USE16
ASSUME CS:CODE,DS:DATA,SS:STACK
START:
MOV AX,DATA
MOV DS,AX
;
MOV DX,OFFSET BUF
MOV AH,10
INT 21H
;
MOV EBX,0;
MOV BL,BUF+1
LEA SI,[EBX+BUF+2];
MOV BYTE PTR [SI],'$'
;
MOV BUF,0AH
MOV BUF+1,0DH
LEA DX,BUF
MOV AH,9
INT 21H 
 
MOV AH,4CH
INT 21H
CODE ENDS
     END START