| 摘要 |
PROBLEM TO BE SOLVED: To surely detect the completion of data write responding to a data write request on the side of a bus master while accurately reading out data from a device, even when a bus slave connected to a bus other than the bus master of a plurality of busses is a device controller for the device changing data at each time of data read.SOLUTION: The bus master 12 is provided on the side of the bus 1, and an IO device controller 22 which executes data write to and data read from an IO device 23 is provided on the side of a second bus 2, and bridges 11 and 21 connect the busses 1 and 2. A write completion notifier 13 is provided on the side of the bus 1 and issues a defective data read request intentionally causing an error, to the IO device controller 22 after issuing a data write request to the IO device controller 22. |
