Embedded symmetric multiprocessor system with arbitration...

Details Embedded symmetric multiprocessor system with arbitration... Embedded symmetric multiprocessor system with arbitration...

2007-06-26

2007-06-26

Peikari, B. James (Department: 2189)

Electrical computers and digital processing systems: memory

Storage accessing and control

Shared memory area

C710S040000, C710S113000, C710S241000

Reexamination Certificate

active

10259331

ABSTRACT:
A single chip, embedded symmetric multiprocessor (ESMP) having parallel multiprocessing architecture composed of identical processors includes a single program memory. Program access arbitration logic supplies an instruction to a single requesting central processing unit at a time. Shared memory access arbitration logic can supply data from separate simultaneously accessible memory banks or arbitrate among central processing units for access. The system may simulate an atomic read/modify/write instruction by prohibiting access to the one address by another central processing unit for a predetermined number of memory cycles following a read access to one of a predetermined set of addresses in said shared memory.

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