--- /dev/null
+;/*****************************************************************************/
+;/* */
+;/* joy-error.inc */
+;/* */
+;/* Joystick error codes */
+;/* */
+;/* */
+;/* */
+;/* (C) 2002 Ullrich von Bassewitz */
+;/* Wacholderweg 14 */
+;/* D-70597 Stuttgart */
+;/* EMail: uz@musoftware.de */
+;/* */
+;/* */
+;/* This software is provided 'as-is', without any expressed or implied */
+;/* warranty. In no event will the authors be held liable for any damages */
+;/* arising from the use of this software. */
+;/* */
+;/* Permission is granted to anyone to use this software for any purpose, */
+;/* including commercial applications, and to alter it and redistribute it */
+;/* freely, subject to the following restrictions: */
+;/* */
+;/* 1. The origin of this software must not be misrepresented; you must not */
+;/* claim that you wrote the original software. If you use this software */
+;/* in a product, an acknowledgment in the product documentation would be */
+;/* appreciated but is not required. */
+;/* 2. Altered source versions must be plainly marked as such, and must not */
+;/* be misrepresented as being the original software. */
+;/* 3. This notice may not be removed or altered from any source */
+;/* distribution. */
+;/* */
+;/*****************************************************************************/
+
+
+
+; Error codes
+JOY_ERR_OK = 0 ; No error
+JOY_ERR_NO_DRIVER = 1 ; No driver available
+JOY_ERR_CANNOT_LOAD = 2 ; Error loading driver
+JOY_ERR_INV_DRIVER = 3 ; Invalid driver
+JOY_ERR_NO_DEVICE = 4 ; Device (hardware) not found
+
+
+
--- /dev/null
+;/*****************************************************************************/
+;/* */
+;/* joy-kernel.inc */
+;/* */
+;/* Internally used joystick functions */
+;/* */
+;/* */
+;/* */
+;/* (C) 2002 Ullrich von Bassewitz */
+;/* Wacholderweg 14 */
+;/* D-70597 Stuttgart */
+;/* EMail: uz@musoftware.de */
+;/* */
+;/* */
+;/* This software is provided 'as-is', without any expressed or implied */
+;/* warranty. In no event will the authors be held liable for any damages */
+;/* arising from the use of this software. */
+;/* */
+;/* Permission is granted to anyone to use this software for any purpose, */
+;/* including commercial applications, and to alter it and redistribute it */
+;/* freely, subject to the following restrictions: */
+;/* */
+;/* 1. The origin of this software must not be misrepresented; you must not */
+;/* claim that you wrote the original software. If you use this software */
+;/* in a product, an acknowledgment in the product documentation would be */
+;/* appreciated but is not required. */
+;/* 2. Altered source versions must be plainly marked as such, and must not */
+;/* be misrepresented as being the original software. */
+;/* 3. This notice may not be removed or altered from any source */
+;/* distribution. */
+;/* */
+;/*****************************************************************************/
+
+
+
+
+
+
+;------------------------------------------------------------------------------
+; Driver header stuff
+
+JOY_HDR_ID = 0 ; $6A, $6F, $79 ("joy")
+JOY_HDR_VERSION = 3 ; Interface version
+
+JOY_MASKS = 4 ; Joystick state mask array
+JOY_MASK_COUNT = 8 ; Size of the array
+
+JOY_HDR_JUMPTAB = 12
+JOY_HDR_INSTALL = JOY_HDR_JUMPTAB+0 ; INSTALL routine
+JOY_HDR_DEINSTALL = JOY_HDR_JUMPTAB+2 ; DEINSTALL routine
+JOY_HDR_COUNT = JOY_HDR_JUMPTAB+4 ; COUNT routine
+JOY_HDR_READ = JOY_HDR_JUMPTAB+6 ; READ routine
+
+JOY_HDR_JUMPCOUNT = 4 ; Number of jump vectors
+
+;------------------------------------------------------------------------------
+; Variables
+
+ .global _joy_drv ; Pointer to driver
+
+;------------------------------------------------------------------------------
+; Driver entry points
+
+ .global joy_install
+ .global joy_deinstall
+ .global joy_count
+ .global joy_read
+
+;------------------------------------------------------------------------------
+; ASM functions
+
+ .global _joy_install
+ .global _joy_deinstall
+ .global _joy_count
+ .global _joy_read
+
/* */
/* */
/* */
-/* (C) 1998-2001 Ullrich von Bassewitz */
+/* (C) 1998-2002 Ullrich von Bassewitz */
/* Wacholderweg 14 */
/* D-70597 Stuttgart */
/* EMail: uz@musoftware.de */
-/* Define __JOYSTICK__ for systems that support a joystick */
-#if defined(__ATARI__) || defined(__C16__) || defined(__C64__) || defined(__C128__) || defined(__PLUS4__) || defined(__CBM510__) || defined(__VIC20__)
-# define __JOYSTICK__
-#else
-# error The target system does not support a joystick!
-# endif
+/*****************************************************************************/
+/* Definitions */
+/*****************************************************************************/
+
+
-/* Argument for the function */
+/* Error codes */
+#define JOY_ERR_OK 0 /* No error */
+#define JOY_ERR_NO_DRIVER 1 /* No driver available */
+#define JOY_ERR_CANNOT_LOAD 2 /* Error loading driver */
+#define JOY_ERR_INV_DRIVER 3 /* Invalid driver */
+#define JOY_ERR_NO_DEVICE 4 /* Device (hardware) not found */
+
+/* Argument for the joy_read function */
#define JOY_1 0
#define JOY_2 1
+/* The following codes are *indices* into the joy_masks array */
+#define JOY_UP 0
+#define JOY_DOWN 1
+#define JOY_LEFT 2
+#define JOY_RIGHT 3
+#define JOY_FIRE 4
+
+/* Array of masks used to check the return value of joy_read for a state */
+extern const unsigned char joy_masks[8];
+
+
+
/* Result codes of the function. The actual code is a bitwise or
* of one or more of the following values.
*/
+#if 0
#if defined(__VIC20__)
# define JOY_UP 0x02
# define JOY_DOWN 0x04
# define JOY_RIGHT 0x08
# define JOY_FIRE 0x10
#endif
+#endif
+
+
+
+/*****************************************************************************/
+/* Functions */
+/*****************************************************************************/
+
+
+
+unsigned char __fastcall__ joy_load_driver (const char* driver);
+/* Load a joystick driver and return an error code */
+unsigned char __fastcall__ joy_unload (void);
+/* Unload the currently loaded driver. */
+unsigned char __fastcall__ joy_count (void);
+/* Return the number of joysticks supported by the driver */
-unsigned __fastcall__ readjoy (unsigned char joy);
-/* Read the joystick. The argument is one of JOY_1/JOY2 */
+unsigned char __fastcall__ joy_read (unsigned char joystick);
+/* Read a particular joystick */
--- /dev/null
+/*****************************************************************************/
+/* */
+/* joy-kernel.h */
+/* */
+/* Internally used joystick functions */
+/* */
+/* */
+/* */
+/* (C) 2002 Ullrich von Bassewitz */
+/* Wacholderweg 14 */
+/* D-70597 Stuttgart */
+/* EMail: uz@musoftware.de */
+/* */
+/* */
+/* This software is provided 'as-is', without any expressed or implied */
+/* warranty. In no event will the authors be held liable for any damages */
+/* arising from the use of this software. */
+/* */
+/* Permission is granted to anyone to use this software for any purpose, */
+/* including commercial applications, and to alter it and redistribute it */
+/* freely, subject to the following restrictions: */
+/* */
+/* 1. The origin of this software must not be misrepresented; you must not */
+/* claim that you wrote the original software. If you use this software */
+/* in a product, an acknowledgment in the product documentation would be */
+/* appreciated but is not required. */
+/* 2. Altered source versions must be plainly marked as such, and must not */
+/* be misrepresented as being the original software. */
+/* 3. This notice may not be removed or altered from any source */
+/* distribution. */
+/* */
+/*****************************************************************************/
+
+
+
+#ifndef _JOY_KERNEL_H
+#define _JOY_KERNEL_H
+
+
+
+/*****************************************************************************/
+/* Data */
+/*****************************************************************************/
+
+
+
+/* A structure that describes the header of a joystick driver loaded into
+ * memory.
+ */
+typedef struct {
+
+ /* Driver header */
+ char id[3]; /* Contains 0x65, 0x6d, 0x64 ("emd") */
+ unsigned char version; /* Interface version */
+
+ /* Bitmasks for the joystick states. See joystick.h for indices */
+ unsigned char masks[8];
+
+ /* Jump vectors. Note that these are not C callable */
+ void* install; /* INSTALL routine */
+ void* deinstall; /* DEINSTALL routine */
+ void* count; /* COUNT routine */
+ void* read; /* READ routine */
+
+} joy_drv_header;
+
+
+
+/* EM kernel variables */
+extern joy_drv_header* joy_drv; /* Pointer to driver */
+
+
+
+
+/*****************************************************************************/
+/* Functions */
+/*****************************************************************************/
+
+
+
+unsigned char __fastcall__ joy_install (void* driver);
+/* Install the driver once it is loaded, return an error code. */
+
+void __fastcall__ joy_deinstall (void);
+/* Deinstall the driver before unloading it */
+
+
+
+/* End of joy-kernel.h */
+#endif
+
+
+
+
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