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Bus interface for IDE device

  • US 5,920,709 A
  • Filed: 11/18/1996
  • Issued: 07/06/1999
  • Est. Priority Date: 06/04/1996
  • Status: Expired due to Fees
First Claim
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1. An interface apparatus which fits into a peripheral slot of a host computer, the host computer having an IDE bus, the interface apparatus comprising:

  • an interface frame having an internal bay which accommodates an IDE device, the interface frame being insertable into the peripheral slot of the host computer;

    an interface circuit which performs IDE communication with the host computer over the IDE bus when no IDE device is in the internal bay, the interface circuit also serving, while the IDE bus is active and while the IDE device is being inserted into the internal bay of the interface frame, to keep the IDE device isolated from the IDE bus until such time as connection of the IDE device to the IDE bus will not corrupt the IDE bus, after which time the circuit connects the IDE device to the IDE bus while the IDE bus is active;

    wherein the interface circuit emulates a sequence of events that occur on the IDE bus for the IDE device that is inserted into the internal bay, and subsequently establishes a current state of the IDE bus in the IDE device.

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