org 100h
jmp start
stack:
db 256 dup(0)
topofstack:
db 0
; add your code here
start:
mov ax, cs
mov ds, ax
mov ss, ax
mov sp, topofstack
mov ax, 0x0003
push ax
call f
pop ax
hlt
f:
push bp
push ax
mov bp, sp
mov ax, [bp+6]
cmp ax, 0x0001
je exit
dec ax
push ax
call f
pop ax
mul [bp+6]
exit:
mov [bp+6], ax
pop ax
pop bp
ret


