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Method and apparatus executing power on self test code to enable a wakeup device for a computer system responsive to detecting an AC power source

  • US 6,760,850 B1
  • Filed: 07/31/2000
  • Issued: 07/06/2004
  • Est. Priority Date: 07/31/2000
  • Status: Expired due to Fees
First Claim
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1. A computer system that comprises:

  • a CPU;

    a memory coupled to the CPU, wherein the memory stores power on self test (POST) code; and

    a power management controller coupled to the CPU, wherein the power management controller is configurable to receive an AC voltage sense signal, wherein assertion of the AC voltage sense signal indicates the presence of an AC power source, and wherein, if the power management controller is so configured by a user, the power management controller causes the CPU to transition from a low power state to an operable state and to execute the POST code to enable a wakeup device, following which the computer system, with the wakeup device still enabled, is in a low power state capable of transitioning to a working state when the wakeup device detects a wakeup signal.

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