Importance

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Abstract

Techniques for using a controlling computer to control another computer with special instruction package prior to launch of the operating system in the controlled computer. For example, a method includes operating the package prior to running the OS in the controlled computer, using the package to cause the controlled computer to respond to a command from the controlling computer, using the package to generate a video frame to represent the received command and the generated response in two separate fields, and sending data for the video frame to the controlling computer. The package may be a special BIOS instruction set. The two separate fields have different coordinates and data bits representing the command are in the designated command field. In operation, the special BIOS set extracts a command from the data bits in the designated command field for execution according to the coordinates of the data bits.

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First Claim