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; test8 - subroutines, saving registers to the stack
begin:
mov ax, 1
mov bx, 2
mov cx, 3
mov dx, 4
jsr func
; the subroutine saves all registers to the stack, modifies them and
; then restores them to their original value
; while in the subroutine we should se 04 03 02 01 0a on the stack
; (the registers and the return address 0a)
end:
hlt
func:
push ax
push bx
push cx
push dx
mov ax, 10
mov bx, 11
mov cx, 12
mov dx, 13
pop dx
pop cx
pop bx
pop ax
ret
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