| 摘要 |
PURPOSE:To control in common line adaptors different in application with a minimum hardware by preparing a command group controlling directly the line adaptor to a microprogram field. CONSTITUTION:A microprocessor muP controlling plural line adaptors LA accommodating plural lines different in kind consists of an arithmetic and logic unit ALU1, memory 2 storing a microprogram muPG and a microinstruction register 3. A field of command designation and fixed value designation section LACMD/FIX to the LA is provided to the muPG of one instruction, this field consists of an LA address controlling directly the LA, a chip selection and each field of read/write and an internal control command designation section CMD designates the changeover of LACMD/FIX. Thus, the muP controls directly the LA, and controls simultaneously other function by using other control field. |
