C H A P T E R 3
Software Modifications
performance or provide better conservation. The controls revert to the single slider if you click the Easy control. The PowerBook Control Panel remembers the state in which the controls were left when last used.
Figure 3-2 PowerBook Control Panel
Power Conservation
There are two modes of battery conservation. One is used when the PowerBook Duo 250 computer is plugged into AC main power, and the other is used when the computer is running on its battery. A TimeMgr task installed by an init in the PowerBook Duo file can automatically change the power management settings based on the machine environment.
When the PowerBook Duo 250 computer is shipped, the power conservation settings in the PowerBook control panel, shown in Figure
At certain times, the PowerBook control panel compares the current Power Manager settings with both sets of parameters. It does this during open and activate events, when you switch from Manual to Auto Power Conservation, and when you switch to Custom view. If a match is found, the name of the matching set is displayed in the
18 | PowerBook Duo 250 Control Panels |