| 摘要 |
PURPOSE:To execute common control, and to shorten operation time, by providing a signal generating means which separately controls plural input/output devices through a common bus from a main processor, and also controls the input/output devices as to each group or in the lump. CONSTITUTION:To a common bus 4 of a CPU1, plural groups, for instance, 2 groups of I/O groups 2, 3 are connected. Each group consists of I/Os 20-2n and 30-3n, respectively, each I/O register an exclusive address and address common to the groups, an exclusive instruction is inputted to the exclusive address from a full line 5, and an instruction common to the groups is transferred to each I/O from a broken line 12 through a common address register 11. In this way, the instructin common to each I/O can be transferred in the lump, and trouble and time required for the operation can be reduced. |
