Memory mapping system

Details Memory mapping system Memory mapping system

1980-05-20

1983-07-12

Ruggiero, Joseph F.

Boots, shoes, and leggings

G06F 936

Patent

active

043934439

ABSTRACT:
A circuit for enhancing the performance of a random-access-memory-based memory expansion system is disclosed. Memory capacity and a control register are added to the traditional memory mapping circuit. The increased memory is utilized to store several maps simultaneously and the circuit output is then switched from one stored map to another according to data present at the control register outputs. Thus, by pre-loading the circuit with all the memory maps required by a particular program, delay caused by map changes is reduced to the time required to move data to the control register outputs.

REFERENCES:
patent: 3761881 (1973-09-01), Anderson
patent: 3764996 (1973-10-01), Ross
patent: 3854126 (1974-12-01), Gray et al.
patent: 3949378 (1976-04-01), Crabb
patent: 4163280 (1979-07-01), Mori
patent: 4176400 (1979-11-01), Heckel
patent: 4202040 (1980-05-01), Whitworth
Peuto, B. L., Architecture of a New Microprocessor, In Computer, vol. 12, No. 2, Feb. 1979.
Bennett, S., ROM Decoder for Memory Mapped .mu.P Systems, In Electronic Engineering, vol. 51, No. 622, May 1979.

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