INT 62 u - FGDRIVER v3.03 - "FG_NUMLOCK" - GET STATE OF NUMLOCK KEY
        AX = 006Ch
Return: AX = NumLock state (0000h off, 0001h on)
Note:   For FGDRIVER v1.10, this function was unused; "FG_NUMLOCK" was AX=0072h
SeeAlso: AX=000Ah,AX=0088h,AX=008Bh,AX=0094h

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