INT 10 - VIDEO - Paradise VGA, AT&T VDC600 - QUERY MODE STATUS
        AX = 007Fh
        BH = 02h
Return: AL = 7Fh if successful (AT&T VDC600)
        BH = status (Paradise/Dell)
            00h invalid function
            7Fh successful
        ---if successful---
        BL = 00h if operating in VGA mode, 01h if non-VGA mode
        CH = total video RAM size in 64k byte units
        CL = video RAM used by the current mode
SeeAlso: AX=007Fh/BH=01h,AX=007Fh/BH=02h

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