| 摘要 |
PROBLEM TO BE SOLVED: To improve independence between processors in the case of an interruption notice and to make compatible a common program in initializing processing and independence between processors. SOLUTION: Concerning the multiprocessor type controller equipped with plural processors 101-102 and a shared memory 112, this controller is provided with a boundary register for holding the boundaries of areas dividing the shared memory 112 for each processor, comparator for comparing the access address of the shared memory 112 with the boundary register, memory control part 107 for limiting the access of the processor based on the compared result of the comparator, interruption control part 106 for reporting interruption according to a mask register for masking an interruption factor for each processor, and identification register for returning a different value through the processor at the reading source. Thus, the independence of processors is improved by the selective notice of interruption while protecting the areas of the shared memory 112 in ordinary processing and the processing when started up can be made common by the identification register. |
