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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 cont

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.

대표청구항 ▼

[ What is claimed is:] [1.] A portable computer comprising:a CPU;a system bus coupled to the CPU for transferring data between the CPU and a gate array circuit;a power supply controller coupled to a function expansion bus, for transferring command data to a gate array circuit through the function ex

[ What is claimed is:] [1.] A portable computer comprising:a CPU;a system bus coupled to the CPU for transferring data between the CPU and a gate array circuit;a power supply controller coupled to a function expansion bus, for transferring command data to a gate array circuit through the function expansion bus;a function expansion bus coupled to the power supply controller for transferring the command data to the gate array circuit; anda gate array circuit coupled to the CPU through the system bus and to the power supply controller through the function expansion bus, and provided with a register which is rewritten by the power supply controller to issue an interrupt signal to the CPU.