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      Ullrich von Bassewitz                                       */
  10 /*               Wacholderweg 14                                             */
  11 /*               D-70597 Stuttgart                                           */
  12 /* EMail:        uz@musoftware.de                                            */
  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 0x65, 0x6d, 0x64 ("emd") */
  54     unsigned char       version;        /* Interface version */
  55
  56     /* Bitmasks for the joystick states. See joystick.h for indices */
  57     unsigned char       masks[8];
  58
  59     /* Jump vectors. Note that these are not C callable */
  60     void*               install;        /* INSTALL routine */
  61     void*               deinstall;      /* DEINSTALL routine */
  62     void*               count;          /* COUNT routine */
  63     void*               read;           /* READ routine */
  64
  65 } joy_drv_header;
  66
  67
  68
  69 /* EM kernel variables */
  70 extern joy_drv_header*  joy_drv;        /* Pointer to driver */
  71
  72
  73
  74
  75 /*****************************************************************************/
  76 /*                                 Functions                                 */
  77 /*****************************************************************************/
  78
  79
  80
  81 unsigned char __fastcall__ joy_install (void* driver);
  82 /* Install the driver once it is loaded, return an error code. */
  83
  84 void __fastcall__ joy_deinstall (void);
  85 /* Deinstall the driver before unloading it */
  86
  87
  88
  89 /* End of joy-kernel.h */
  90 #endif
  91
  92
  93
  94