PREVENTING SYSTEM FOR ERROR REPERCUSSION OF COMPUTER SYSTEM IN MULTIPLE SYSTEM

摘要

PURPOSE:To surely prevent an error repercussion onto a normal computer by message of a faulty computer by throwing away a received message through the collation of result of arithmetic operation between its own computer and a sender computer. CONSTITUTION:Computer 101-103 coupled mutually by a transmission line 104 are provided with a CPU diagnostic arithmetic result storage table 105 collecting the result of CPU diagnostic arithmetic operation of all computers. If a fault takes place in a CPU, the correct result is not obtained by the CPU diagnostic arithmetic processing and a different arithmetic result from its own computer and the faulty computer is stored in the CPU arithmetic processing result storage table 105 in the normal computers. Thus, the massage sent from the faulty computer by the collation with the operating result with its own computer and the computer sending a message is all thrown away when it reaches the normal computer. Thus, no malfunction of the normal computer occurs.