Patent attributes
A writing control circuit for writing command data supplied from a plurality of host computers onto any of a plurality of register sections, the writing control circuit includes a plurality of request signal storing sections, a host selecting section, and a writing section. The plurality of request signal storing sections correspond to the plurality of host computers and store writing request signals supplied from the corresponding host computers. The host selecting section sequentially selects the request signal storing sections, and receives and outputs data being stored by the selected request signal storing sections. The writing section receives the stored data output by the host selecting section, the command data, and register section specifying data.