INT 62 u - FGDRIVER v3.03 - "FG_GETPIXEL" - GET COLOR OF SPECIFIED PIXEL
        AX = 0041h
        BX = column in screen space
        CX = row in screen space
Return: AX = color value of pixel (0 to num_colors-1)
            0000h in text modes
Note:   For FGDRIVER v1.10, this function was "FG_SETHPAGE" (see AX=0091h);
           "FG_GETPIXEL" was AX=0020h
SeeAlso: AX=0030h,AX=0032h,AX=0076h,AX=0077h

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