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Apparatus for computer implemented hot-swap and hot-add

  • US 6,247,079 B1
  • Filed: 10/01/1997
  • Issued: 06/12/2001
  • Est. Priority Date: 05/13/1997
  • Status: Expired due to Term
First Claim
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1. In a computer system having a processor, a memory, and a system bus, the processor and memory being connected to the system bus, a hot-plug system, comprising:

  • a first bus connected to the system bus;

    an adapter card slot having a first port and a second port;

    a switchable interface unit having a primary port and a secondary port, and the primary port connected to the first bus and the secondary port connected to the first port of the adapter card slot, and the switchable interface unit responsive to a hot-swap hot-add power-down request to disconnect the secondary port from the first bus, and further responsive to a power-up request to reconnect the secondary port to the first bus;

    a program code in the memory to accept a request to connect a peripheral device adapter card into the second port of the adapter card slot, and responsive to the request to communicate a power-down request to the switchable interface unit.

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