e 200 "A:\test.dat" 0
f 300 l 400 26
a
 mov ah, 3C
 mov cx, 0
 mov dx, 200
 int 21
 xchg bx, ax
 mov ax, 4200
 xor cx, cx
 mov dx, 201
 int 21
 mov dx, 300
 mov cx, 1
 mov ah, 40
 int 21
 mov ah, 68
 int 21
 int3
 int3
 jmp 100
 .