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Local bus interface

  • US 5,649,162 A
  • Filed: 05/24/1993
  • Issued: 07/15/1997
  • Est. Priority Date: 05/24/1993
  • Status: Expired due to Term
First Claim
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1. A device for connecting a plurality of data storage devices to a local bus of a personal computer, comprising:

  • (a) local bus connection means for connecting the device directly to a local bus, the local bus including a data bus;

    (b) address decode means for decoding an address from the local bus connection means;

    (c) data latching means for latching data being received from or sent to the local bus,wherein the data latching means is capable of accepting data coming from the local bus at a higher rate than the storage devices are capable of accepting data, andwherein the data latching means makes the local bus available for another purpose before the data is fully written to the storage devices during a write operation; and

    (d) a dynamic bus sizing controller that carries out write operations by partitioning a unit of data from the local bus into at least a first smaller unit of data and a second smaller unit of data, and then communicates the first smaller unit of data to a data storage port on a first data storage device and the second smaller unit of data to a data storage port on a second data storage device in a non-sequential manner, andwherein the dynamic bus sizing controller carries out read operations by combining a first unit of data from the data storage port on the first data storage device and a second unit of data from the data storage port on the first storage device into a combined unit of data that can be placed on the local bus connection means.

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