Core memory wiring arrangement

Details Core memory wiring arrangement Core memory wiring arrangement

1978-05-16

1980-12-09

Moffitt, James W.

Static information storage and retrieval

Interconnection arrangements

Magnetic

365207, G11C 506

Patent

active

042388384

ABSTRACT:
A large, 2 wire, 2-1/2D core memory includes four, 1K (1024) by 1280, core frames with 1280 Y conductors each stringing and inductively coupling a column of 1024 cores in each of the four frames and 4K orthogonal X conductors each stringing and inductively coupling one row of 1280 cores. A word position within the memory is defined by 5 pairs of Y conductors, a corresponding X conductor from each frame, and selection of relative current directions in the Y conductors. Reading of a 20 bit word is accomplished with 5 sense amplifiers in four rapid succession read sub-operations. Digit sense conductor noise recovery time is minimized by arranging for balanced, predictable delta noise on each digit sense conductor of a pair and by providing a multiple digit sense conductor pair crossover arrangement which results in a balancing of image current coupling into adjacent digit sense conductor pairs.

REFERENCES:
patent: 3305846 (1967-02-01), Amemiya
patent: 3864672 (1975-02-01), Ingelaere
Proceedings-Fall Joint Computer Conference 1966, pp. 267-280.

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