INT 33 - Smooth Mouse Driver, PrecisePoint - GET INFORMATION
        AX = 3003h
        BL = data structure selector
            00h Primary Bitmap (used for 25 line mode)
            01h Secondary Bitmap (used for 43/50 line modes)
            02h Sacrifice Character Map
            03h Program Information
Return: ES:DX -> selected data structure
SeeAlso: AX=3000h

Format of Primary/Secondary Bitmap [SMD_BITMAP_STRUCT]
Offset  Size    Description
 00h    BYTE    vertical size of bitmap (00h - 10h)
 01h    BYTE    horizontal size of bitmap (00h - 10h)
 02h    BYTE    vertical hotspot position (00h - 10h)
 03h    BYTE    horizontal hotspot position (00h - 10h)
 04h 16 WORDs   cursor bitmap data
 14h 16 WORDs   screen bitmap data

Format of Sacrifice Character Map [SMD_SMAP_STRUCT]
Offset  Size    Description
 00h    BYTE    bytes are character values (00h-FFh) used in place of the
 01h    BYTE    actual character for the corresponding position on the screen
 02h    BYTE         +
 03h    BYTE         |: 0h | 1h | 2h |    cursor
 04h    BYTE         |----+----+----|
 05h    BYTE         | 3h | 4h | 5h |
 06h    BYTE         |----+----+----|
 07h    BYTE         | 6h | 7h | 8h |
 08h    BYTE         +
.