Method for displaying debugging codes by using LED lamps on keyboard of computer
A technology of LED lights and computer keyboards is applied in the field of displaying error detection codes, which can solve the problems of increased material cost, defectiveness, and inconvenience in use.
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[0009] The invention relates to a method for displaying error detection codes by using LED lights on a computer keyboard.
[0010] Please refer to figure 1 , to illustrate the flow chart of the method disclosed by the present invention for using the LED light on the computer keyboard to display the error detection code. When the computer host is powered on and passes through the BIOS startup test stage, the front-end POST (POWER ON SELF TEST) self-test program in the BIOS is executed. , where POST is composed of many small test programs. Before it enters the test program, it will first put the test program code (ERRORCODE) into the CPU AL register, and then transfer the data in the CPU AL register via the I / O command (OUT 60H, AL) To the keyboard controller, after decoding, the program code (ERROR CODE) is directly used to display the error code by the light and dark combination of the LED lights on the computer keyboard to inform the user of the current execution test status...
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