Electronic device with microprocessor and banked memory and meth

Details Electronic device with microprocessor and banked memory and meth Electronic device with microprocessor and banked memory and meth

1995-04-05

1997-08-05

Oberley, Alvin E.

395402, G06F 1200

Patent

active

056550995

ABSTRACT:
An electronic device is described having a microprocessor (100) and banked memory (otherwise known as virtual memory, 15, 16) as well as a method of operation of a such a device. A selected program is run from a first banked memory (15). An access program is loaded from the running program into common RAM (11). The access program is run from common RAM and actuates a memory switch (121) to disconnect the first banked memory from the microprocessor and to connect in its place a second banked memory (16). Memory access operations are performed to the second banked memory. The access program activates the memory switch to disconnect the second banked memory and to reconnect the first banked memory and running of the selected program is recommenced. By storing the access program in RAM, there is less usage of valuable common memory space.

REFERENCES:
patent: 4713759 (1987-12-01), Yamagishi et al.
patent: 5146581 (1992-09-01), Kaneko
patent: 5226136 (1993-07-01), Nakagawa
patent: 5276831 (1994-01-01), Nakanishi et al.

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