Extended addressing apparatus and method for direct storage...

Details Extended addressing apparatus and method for direct storage... Extended addressing apparatus and method for direct storage...

G - Physics

11

C

354/239

G11C 9/04 (1980.01)

Patent

CA 1184315

Abstract: Extended Addressing Apparatus and Method For Direct Storage Access Devices A computing system storage addressing apparatus which extends the addressing capability of an address bus to enable direct storage (memory) storage access (DMA) channels to operate simultaneously in the same or different storage page. The computing system includes a processor, a plurality of storage devices, a data bus and an address bus interconnecting the processor and the storage devices, a DMA device controlling connection of a plurality of DMA channels to the address bus and data bus, a plurality of address register means for storing page address signals loaded from the processor, and gating means for gating to the address bus page address signals from an address register means corresponding to a currently active DMA channel.

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