| 摘要 |
PURPOSE:To attain the separation of a test system and a normal system by releasing a logical transmission line by performing communication according to the operation mode and address rule of its own system in a computer system joining a network. CONSTITUTION:An address added to the logical transmission line for specifying the other system, and the address indicating the operation mode are provided at each system. For example, at the time of expressing the address with a character code, 'ASYS', 'BSYS', 'CSYS', and 'DSYS' are respectively added to an A system, B system, C system, and D system as the address for specifying each system. Then, only the two kinds of the logical transmission line set when both the A and B systems are in the test mode, and the logical transmission line set when the both A and B systems are in the normal mode are defined between the A and B systems. Moreover, each system is equipped with a means which recognizes the operation mode, and a means which operates communication according to the operation mode and the address rule, and communication is operated. |
