1

model tiny
.code
org 100h

main:

get_args:

	xor bx, bx
	mov si, 82h
	mov bx, 2fh
	cmp [si], bx
	jne installed

	inc si
	xor bx, bx
	mov bx, 30h
	cmp [si], bx
	je r1

	xor bx, bx
	mov bx, 31h
	cmp[si], bx
	je r2
	jmp installed

ours_interrupt_magic_num1 db 80h
ours_interrupt_magic_num2 dw 77h

r1:
	mov ah, ours_interrupt_magic_num1
    mov al, 0
    int 2fh
    cmp ax, ours_interrupt_magic_num2
	je installed

	mov dx, offset r1
	int 27h

r2:
	mov dx, offset r2
	int 27h

installed:
	mov ax, 00h

end main