METHOD AND DEVICE FOR ERRRO CHECK OF FIELD PROGRTAMMABLE GATE ARRAY

摘要

PURPOSE:To provide an error checking method/device which can easily check whether the data written in a working field programmable gate array are normal or not. CONSTITUTION:A read control circuit 5 receives a check start signal from a processor 3 and stops the system clock transmitted to a gate array 1. Then the circuit 5 reads the data and the original data out of the array 1 and a storage 2 respectively. The bit of the data A read out of the array 1 is cleared by a status bit clear circuit 6 and then inputted to a deciding circuit 7 to which the read data B is inputted from the storage 2. The circuit 7 decides the coincidence between both data A and B. Then the circuit 7 outputs an alarm signal when no coincidence is decided between both data and sends a normal signal to the circuit 5 when the coincidence is secured between both data respectively. When the coincidence is confirmed among all data, the circuit 5 decides that the data given from the array 1 are normal starts the system clock.