INT 2F - MS Windows "WINOLDAP" - GET DEVICE CAPABILITIES
        AX = 170Ah
        DX = GDI information index
            00h device driver version
            02h device classification
            04h width in mm
            06h height in mm
            08h width in pixels
            0Ah height in pixels
            0Ch bits per pixel
            0Eh number of bit planes
            10h number of brushes supported by device
            12h number of pens supported by device
            14h number of markers supported by device
            16h number of fonts supported by device
            18h number of colors
            1Ah size required for device descriptor
            1Ch curve capabilities
            1Eh line capabilities
            20h polygon capabilities
            22h text capabilities
            24h clipping capabilities
            26h bitblt capabilities
            28h X aspect
            2Ah Y aspect
            2Ch length of hypotenuse of aspect
            58h logical pixels per inch of width
            5Ah logical pixels per inch of height
Return:  AX = integer value of the desired item (see below)
Note:  This function returns the device-capability bits for the given display

Values for device classification:
 00h    vector plotter
 01h    raster display
 02h    raster printer
 03h    raster camera
 04h    character-stream, PLP
 05h    Metafile, VDM
 06h    display-file

Bitfields for curve capabilities:
 bit 0  circles
 bit 1  pie wedges
 bit 2  chord arcs
 bit 3  ellipses
 bit 4  wide lines
 bit 5  styled lines
 bit 6  wide styled lines
 bit 7  interiors

Bitfields for line capabilities:
 bit 1  polylines
 bit 2  markers
 bit 3  polymarkers
 bit 4  wide lines
 bit 5  styled lines
 bit 6  wide styled lines
 bit 7  interiors

Bitfields for polygon capabilities:
 bit 0  polygons
 bit 1  rectangles
 bit 2  trapezoids
 bit 3  scanlines
 bit 4  wide borders
 bit 5  styled borders
 bit 6  wide styled borders
 bit 7  interiors

Bitfields for text capabilities:
 bit 0  output precision character
 bit 1  output precision stroke
 bit 2  clippping precision stroke
 bit 3  90-degree character rotation
 bit 4  arbitrary character rotation
 bit 5  independent X and Y scaling
 bit 6  double-size
 bit 7  integer scaling
 bit 8  continuous scaling
 bit 9  bold
 bit 10 italic
 bit 11 underline
 bit 12 strikeout
 bit 13 raster fonts
 bit 14 vector fonts
 bit 15 reserved

Values for clipping capabilities:
 00h    none
 01h    clipping to rectangles

Bitfields for raster capabilities:
 bit 0  simple bitBLT
 bit 1  device requires banding support
 bit 2  device requires scaling support
 bit 3  supports >64K bitmap

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