;;; -*- Mode: asm; indent-tabs-mode: t; tab-width: 8 -*-

        ;; public args
        A_start = $D0      ; 16-bit value (uses D1)
        B_start = $D2      ; 16-bit value (uses D3)
        length = $D4       ; 16-bit value (uses D5), this is the number of bytes

        RTS_pointer = $D6  ; 16-bit value (uses D7)
        data_to_write = $D8
        length_copy = $d9  ; 16-bit vale (uses da)
        instruction_backup = $db