| 摘要 |
Micro-computer capable of independently testing an additional logic for user and a pre-existing micro-computer portion in a shipment test of the micro-computer having the enclosed additional logic for user. A logic dedicated to connection is directly coupled to an internal bus of the micro-computer and is provided between the additional logic for user and the micro-computer . For testing the additional logic for user, a bus/port changeover terminal of the micro-computer and a read/write signal are used to effect readout/writing. Also, a bus inspection register is provided in the logic dedicated to connection. For testing the micro-computer, an output of the inspection register is read out to a bus of the logic dedicated to connection to inspect the bus. <IMAGE> |
