Portable computer having dedicated register group and peripheral controller bus between system bus and peripheral controller 



Dedicated registers are arranged in a status LCD control gate array connected to a system bus, and the dedicated registers or register group and a keyboard controller are connected through a keyboard interface bus. The keyboard controller has two ports for communicating with a CPU. The keyboard controller transfers existing commands released to an application program or the like and transmits normal key data through the system bus. The keyboard controller transmits hot key data and transfers a command for realizing any other special function through the keyboard interface bus and the dedicated registers. 

Method and apparatus for computer system power management 



A method and apparatus for managing power states of at least one hardware resource, including registering at least one hardware resource power state corresponding to a software process, determining whether a current hardware resource power state fulfills the registered hardware resource power state corresponding to the software process, and modifying the current hardware resource power state that is determined not to fulfill the registered hardware resource power state prior to executing the software process.