| 摘要 |
Control panel function is provided to bus units (12,14,16) coupled together by an I/O bus. At least one bus unit (12) has the capability to issue control commands through the bus to one or more other bus units. A control facility (26, 28) is integrated into bus units, and makes full use of existing paths to processor registers and main storage. Control commands are distinguished from other bus communications, and executed by the control facility, to provide a full control panel function for each bus unit incorporating the control facility. |
