Electronic device for detecting bus anomalies, has micro computer, read only memory, address bus, which connects micro computer and ROM and transmits addresses

摘要

The electronic device has a micro computer, a read only memory (ROM), a address bus, which connects micro computer and ROM and transmits addresses. A data bus connects micro computer and ROM and transmits data. The micro computer has an address bus abnormality determination device for reading data, which are written in data area in ROM, which are specified by a sequence of different addresses, by which a bit of another value has value of another bit.