| 摘要 |
An input/output multiplexer 20 couples a central subsystem 3 to peripheral subsystems 4 containing several units. Information flows from the central subsystem to the peripheral subsystems through a central subsystem data distributor 21, a switch 25, and a peripheral subsystems access controller 26; and in the reverse direction through a peripheral subsystems data controller 27, a channel services processor 28, a switch 29, and a central subsystem access controller 20. Information relating to different subsystems can be at different stages in its passage simultaneously. A control word processor 24 and scratch pad memory 31 stores files from the central subsystem and prepares real addresses, and the channel service processor 28 obtains these addresses, in response to signals from the peripheral subsystems, and incorporates them in the information flowing to the central subsystem. |
