Protecting method for frame buffer zone state
A frame buffer and state technology, applied in the fields of instruments, digital data processing, computing, etc., can solve the problems of the conflict of the display card, the shutdown of the Linux system, the blurred screen of the main control program, etc., to avoid the conflict of use, ensure the security, The effect of broad compatibility and applicability
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[0025] The features and embodiments of the present invention are described in detail below with reference to the accompanying drawings.
[0026] FIG. 1 is an embodiment of the frame buffer state protection method of the present invention. As shown in the figure, first the virtual interrupt initialization (step 102), by carrying out the Linux system real mode initialization, to support the basic input / output system (BIOS) of the current computer display card to call INT 10H, wherein the basic input / output system (BIOS ) supports calling the Video Electronics Standards Association (VESA) subfunction whose function number is 4F04 in INT 10H. Then judge whether the above-mentioned Linux system real mode initialization is successful (step 104), if it fails, then end; otherwise advance to step 106, return to save / restore the required memory size of the frame buffer state of the current system. In the process of returning the required memory size of the frame buffer state, the inter...
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