Memory apparatus comprising memory cards with a side detecting s

Details Memory apparatus comprising memory cards with a side detecting s Memory apparatus comprising memory cards with a side detecting s

1992-02-03

1995-04-04

Gossage, Glenn

Static information storage and retrieval

Magnetic bubbles

Guide structure

395425, 365 52, 365 63, 36523003, 364DIG1, G06F 1200, G06F 1300, G11C 504, G11C 800

Patent

active

054044758

ABSTRACT:
A memory apparatus including a back board having a lower address side and an upper address side, and a plurality of memory cards installed on the back board. Each memory card comprises a lower address side detecting signal pin for determining whether that memory card is installed on the lower address side of the back board, capacity detecting signal pins for notifying other memory cards of the capacity of that memory card, address signal pins, connected to an address signal line, and an address assigning circuit. When a memory card is installed on the lower address side of the back board, the capacity detecting signal pins and address signal pins assign an address to that memory card starting from a minimum address on the lower address side, and assign and address to another memory card which is installed on the upper address side starting with an address following the maximum address of the memory card installed on the lower address side.

REFERENCES:
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patent: 4319343 (1982-03-01), Powell
patent: 4354258 (1982-10-01), Sato
patent: 4400794 (1983-08-01), Koos
patent: 4592011 (1986-05-01), Mantellina et al.
patent: 4860252 (1989-08-01), Sykora
patent: 4899272 (1990-02-01), Fung et al.

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