INT 2F - VGAsave v1.93 - INSTALLATION CHECK
        AX = C000h
Return: AL = FFh if installed
            BX = segment of resident code
Program: VGAsave is a freeware VGA-specific, mouse-aware screenblanker by Bill
          Javurek
Note:   VGAsave may use any AH value from C0h through FFh; the transient
          portion of VGAsave compares the first 38 bytes of the resident code
          (addressed through BX) against its own copy of the resident code to
          complete the installation check
Index:  screen saver;VGAsave

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