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, 200
 int 21
 mov dx, 300
 mov cx, 201
 mov ah, 40
 int 21
 mov ah, 68
 int 21
 int3
 int3
 jmp 100
 .