git.sur5r.net Git - cc65/blob - include/joystick/joy-kernel.h

   1 /*****************************************************************************/
   2 /*                                                                           */
   3 /*                               joy-kernel.h                                */
   4 /*                                                                           */
   5 /*                    Internally used joystick functions                     */
   6 /*                                                                           */
   7 /*                                                                           */
   8 /*                                                                           */
   9 /* (C) 2002-2006, Ullrich von Bassewitz                                      */
  10 /*                Roemerstrasse 52                                           */
  11 /*                D-70794 Filderstadt                                        */
  12 /* EMail:         uz@cc65.org                                                */
  13 /*                                                                           */
  14 /*                                                                           */
  15 /* This software is provided 'as-is', without any expressed or implied       */
  16 /* warranty.  In no event will the authors be held liable for any damages    */
  17 /* arising from the use of this software.                                    */
  18 /*                                                                           */
  19 /* Permission is granted to anyone to use this software for any purpose,     */
  20 /* including commercial applications, and to alter it and redistribute it    */
  21 /* freely, subject to the following restrictions:                            */
  22 /*                                                                           */
  23 /* 1. The origin of this software must not be misrepresented; you must not   */
  24 /*    claim that you wrote the original software. If you use this software   */
  25 /*    in a product, an acknowledgment in the product documentation would be  */
  26 /*    appreciated but is not required.                                       */
  27 /* 2. Altered source versions must be plainly marked as such, and must not   */
  28 /*    be misrepresented as being the original software.                      */
  29 /* 3. This notice may not be removed or altered from any source              */
  30 /*    distribution.                                                          */
  31 /*                                                                           */
  32 /*****************************************************************************/
  33
  34
  35
  36 #ifndef _JOY_KERNEL_H
  37 #define _JOY_KERNEL_H
  38
  39
  40
  41 /*****************************************************************************/
  42 /*                                   Data                                    */
  43 /*****************************************************************************/
  44
  45
  46
  47 /* A structure that describes the header of a joystick driver loaded into
  48 ** memory.
  49 */
  50 typedef struct {
  51
  52     /* Driver header */
  53     char                id[3];          /* Contains 0x6a, 0x6f, 0x79 ("joy") */
  54     unsigned char       version;        /* Interface version */
  55     void*               libreference;   /* Library reference */
  56
  57     /* Jump vectors. Note that these are not C callable */
  58     void*               install;        /* INSTALL routine */
  59     void*               uninstall;      /* UNINSTALL routine */
  60     void*               count;          /* COUNT routine */
  61     void*               read;           /* READ routine */
  62
  63 } joy_drv_header;
  64
  65
  66
  67 /* JOY kernel variables */
  68 extern joy_drv_header*  joy_drv;        /* Pointer to driver */
  69
  70
  71
  72 /*****************************************************************************/
  73 /*                                   Code                                    */
  74 /*****************************************************************************/
  75
  76
  77
  78 void joy_clear_ptr (void);
  79 /* Clear the joy_drv pointer */
  80
  81
  82
  83 /* End of joy-kernel.h */
  84 #endif