Expandable memory having plural memory cards for distributively

Details Expandable memory having plural memory cards for distributively Expandable memory having plural memory cards for distributively

1992-03-11

1995-06-27

Gossage, Glenn

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

361737, 361736, 361633, 395400, 395325, G06F 1340, G06F 1338, G06F 1342

Patent

active

054287626

ABSTRACT:
An improved memory system and memory controller which permits simplified memory upgrades in the field. The system includes a memory board with multiple card sockets. As additional cards are added the data cables are distributed among the cards and the memory controller is programmed to coordinate the sequencing of the memory in the cards. Data is transferred between the cards and memory controller via distributively coupled cables. Control and address signals are provided to cards via wires embedded in the memory board from the memory controller. A repowering circuit on each card makes copies of the control and address signals which are sent to other cards through the embedded wires in the board. Data received by a card is stored in memory through steering logic and buffers.

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