Multi-computer system of the same architecture with cooperative capability and the cooperating method thereof

摘要

A homogeneous multi-computer system comprises a system bus with a system data bus for transmitting data and a system management bus for transmitting system management signals, and a plurality of cell- computers having identical architecture and being connected to the system bus. Each cell-computer has a window device (WD), connected between an internal data bus (IDB) of the cell-computer and the system data bus, for controlling the on-and-off states of the system data bus to the IDB; an encoding and selecting device (NCD), connected to the IDB and system management bus, for generating a signal CST and a selected signal NCS representive of match of code sent by the system management bus with code of the present computer; a multi-computer control device (MCD), responding to the selected signal NCS from the NCD and under the trigger of the CST signal from the system management bus, for generating a set of control signals (chfo, SYNC, CPT) and SSYNC signal to each cell-computer via the system management bus for each cell-computer to enter synchronous state; and a central processing unit (CPU), responding to the set of control signals from the MCD, for continuously generating signals during each machine cycle to determine whether the IDB and system data bus are on and the CPU, memory, and I/O devices are high impedance with respect to the IDB.