| 摘要 |
<p>PURPOSE:To simplify the constitution and to facilitate the implementation of LSI by disposing plural port storage device of the same constitution between a common bus and respective processors, thereby forming a shared memory and ports as a whole. CONSTITUTION:The port storage devices 10-0, 10-1, 10-2... of the same constitution are provided for each I/O port of the respective processors 1-0, 1-1, 1-2.... The port storage devices 10-0, 10-1, 10-2... are provided with a shared stored device, an access determining means to determine a storage device to access in accordance with prescribed priorities, and a buffer changeover means to switch between an address buffer and a data buffer by the determination of access determining means.</p> |
