| 摘要 |
PURPOSE:To realize a sharing of function for the control part of the central processor and the channel system device and thus increase the economical performance, by securing a microcontrol for the control of both devices to integrate the control of the both. CONSTITUTION:In the central process system, the process program and data necessary for an exchange process are stored in the main memory device MM, and the prescribed action corresponding to the instruction is executed by the microinstruction stored in a microprocessor and control memory CM each. In the channel system of switchboard, the address of the read/write memory for the call data at each time of allotment is stored in the channel holding memory NCM. At the same time, the signal transmission data of the subscriber line is sent in a certain cycle from a part of the control memory SCM and by the microinstruction of the memory CM. Then the working sequence of each control memory is stored in the memory CM of a microprocessor in the form of a microinstruction and controlled by allotting the process time of the central process system. |
