System and method for sharing a non-volatile memory element as a

Details System and method for sharing a non-volatile memory element as a System and method for sharing a non-volatile memory element as a

1996-09-13

1998-12-08

Zanelli, Michael

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Vehicle subsystem or accessory control

348 12, 39520042, 395728, G05B 1500, H04N 714

Patent

active

058483675

ABSTRACT:
A system and method for multiple processors operating independently from one another to share memory as a boot device. The system includes a plurality of computing systems each including a processor and a local memory element. In response to a boot condition for a selected computing system, its processor begins a boot sequence in which it uses operational code contained within a non-volatile memory element that is shared by each of the computing systems. Arbitration for ownership of a memory bus interconnecting the non-volatile memory element to the processors and organization of a direct memory access transfer between the non-volatile memory element and local memory associated with the processor of the selected computing system is controlled by a memory access coordination circuit coupled between the computing systems and the memory bus.

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