| 摘要 |
PROBLEM TO BE SOLVED: To perform broadcast by connecting plural processors controlling an interface and a shared memory storing control information in a star shape and making them a common bus between dedicated broadcast processors. SOLUTION: Each CPU-PK 101 is provided with a dedicated broadcast bus controlling part 401 in an MPA 111 and it is connected between dedicated broadcast buses 0 and 1. When each CPU 102 broadcasts to other CPUs 102, the CPU 102 transmits a broadcast request signal to the part 401, it transmits a request for right of use to an arbiter 404 or 405 and there, competition with requests from the other CPU-PKs is subjected to arbitration processing. The part 401 given the right of use from the arbiter 404 or 405 transmits broadcast data transmitted from the CPU 102 to a dedicated broadcast bus. |
