


class memory:


    def __init__(self, word_length, start, end):
        return

    def paddr_write(self,paddr, data, length):

        return

    def paddr_read(self, paddr, data, length):

        return

    def vaddr_write(self, vaddr, data, length):

        return

    def vaddr_read(self. vaddr, data, length):

        return


