Power savings with ms-dos idle loop

Details Power savings with ms-dos idle loop Power savings with ms-dos idle loop

G - Physics

06

F

G06F 1/32 (2006.01)

Patent

CA 2111680

2111680 9306545 PCTABS00021 In a portable computer, a device driver program causes the system to conserve power whenever the processor is idle. The program detects the idle processor via a unique interrupt generated by the operating system's idle loop. After detecting the idle state, the program conserves power usage by slowing the system clock speed and halting the processor. The system returns to its normal operating state when the processor detects an external interrupt. Although an operator action generates an external interrupt, the 55 ms periodic timer typically awakens the processor. In addition, the program blocks the power saving measures in cases where the operator would notice performance degradation.

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