Method of operating a control system which includes a nonvolatil

Details Method of operating a control system which includes a nonvolatil Method of operating a control system which includes a nonvolatil

1997-03-26

2000-06-20

Chan, Eddie P.

Electrical computers and digital processing systems: memory

Addressing combined with specific memory configuration or...

For multiple memory modules

G06F 1202

Patent

active

060789840

ABSTRACT:
The invention is directed to a method of operating a control system which includes a nonvolatile memory unit having memory banks and a volatile memory unit for storing programs and data. Access is permitted to only a single one of the memory banks of the nonvolatile memory unit at a given time point and the memory bank permitting the access is addressable by using addresses which are located within a memory bank address space. The memory bank address space is common to all memory banks and adapted to the size of the memory banks. The nonvolatile memory and the volatile memory are driven in such a manner that the memory bank permitting the access is only accessible in part. When an addressing attempt is made via an address, which is assigned to that part of the particular memory bank which is not accessible, the volatile memory unit is shifted into a state permitting an access and the volatile memory is addressed via the address.

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