JPS6472248A - Memory device - Google Patents

Abstract

PURPOSE:To facilitate the duplex structure of a memory device by operating, hereafter, a memory module received an instruction from a host device for queuing to perform writing jobs to the write instructions given from other devices but has no answer of acknowledge and has no reading job nor answer of acknowledge to the read instructions. CONSTITUTION:A memory device 2 consists of plural memory modules 5-7. In this case, the number of modules has no limitation. A memory module that received an instruction from a host device 3 for queuing performs hereafter the writing jobs but has no answer of acknowledge to the write instructions given from other devices. While said module has no writing job nor answer of acknowledge to the read instructions. In such a constitution, a memory can be easily duplicated with the small hardware quantity. Then a memory device with high reliability is obtained.