a 100
MOV     DI,0200
MOV     DX,1234
IN      AL,DX
TEST    AL,AL
JZ      010E
STOSB
JMP     0106
MOV     BYTE PTR [DI],0D
MOV     BYTE PTR [DI+01],0A
MOV     BYTE PTR [DI+02],24
MOV     DX,0200
MOV     AH,09
INT     21
MOV     AX,4C00
INT     21

r cx
25
w
q
