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                                 msm_init

   Required before any other mouse functions are used

   Usage
   #include <msmouse.h>
   int msm_init(void);

   Description
   Initializes  the  mouse  driver, this function  turns  off  all  mouse
   interrupts and turns on light pen emulation.

   If in graphics mode the cursor is set to be an arrow, if in text mode,
   it is set to be inverse video. The cursor is positioned in the  middle
   of  screen,  the cursor display is turned off and the  min/max  cursor
   position   is  set  to  the  full  screen  dimensions.  Finally,   the
   mickey/pixel  ratio is set to1/1 in the x direction and 2/1 in  the  y
   direction.

   Return Value
   Returns  -1  if  successful, otherwise  0  if  initialization  failed.
   Failure may indicate no mouse driver is present.