| 摘要 |
The system is divided into two (or more) groups of processors (1,2) interconnected by directories (100,200). The first directory (100) checks whether an address of a request on a first system bus (40) coincides with that of a request from the second directory (200). When coincidence is detected, the first directory cancels the request on the first system bus and re-transmits it. Given that the second system bus (41) has a clock phase offset by interaction of the synchronisation controllers (20,21), the requests are verified without overlap.
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