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  * There is also direct access (without any system calls)
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  * There is also direct access (without any system calls)
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    to videomemory through the selector gs. To get parameters of
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    to videomemory through the selector gs. To get parameters of
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    the current videomode, use function 61.
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    the current videomode, use function 61.
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======================================================================
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=============== Function 36 - read screen area. ===============
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======================================================================
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Paramters:
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  * eax = 36 - function number
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  * ebx = pointer on the previously allocated area of memory,
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             where will be placed the image in the format BBGGRRBBGGRR...
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  * ecx = [size on axis x]*65536 + [size on axis y]
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  * edx = [coordinate on axis x]*65536 + [coordinate on axis y]
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Returned value:
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  * function does not return value
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Remarks:
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  * Coordinates of the image are coordinates of the upper left corner
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    of the image relative to the window.
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  * Size of the image in bytes is 3*xsize*ysize.
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======================================================================
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======================================================================
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=================== Function 37 - work with mouse. ===================
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=================== Function 37 - work with mouse. ===================
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======================================================================
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======================================================================
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