Annotation of sys/arch/i386/isa/joyreg.h, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: joyreg.h,v 1.4 2002/06/02 22:49:59 deraadt Exp $ */
! 2: /* $NetBSD: joy.c,v 1.3 1996/05/05 19:46:15 christos Exp $ */
! 3:
! 4: /*-
! 5: * Copyright (c) 1995 Jean-Marc Zucconi
! 6: * All rights reserved.
! 7: *
! 8: * Ported to NetBSD by Matthieu Herrb <matthieu@laas.fr>
! 9: *
! 10: * Redistribution and use in source and binary forms, with or without
! 11: * modification, are permitted provided that the following conditions
! 12: * are met:
! 13: * 1. Redistributions of source code must retain the above copyright
! 14: * notice, this list of conditions and the following disclaimer
! 15: * in this position and unchanged.
! 16: * 2. Redistributions in binary form must reproduce the above copyright
! 17: * notice, this list of conditions and the following disclaimer in the
! 18: * documentation and/or other materials provided with the distribution.
! 19: * 3. The name of the author may not be used to endorse or promote products
! 20: * derived from this software without specific prior written permission
! 21: *
! 22: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
! 23: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
! 24: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
! 25: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
! 26: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
! 27: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
! 28: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
! 29: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
! 30: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
! 31: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 32: *
! 33: */
! 34:
! 35: /*
! 36: * The game port can manage 4 buttons and 4 variable resistors (usually 2
! 37: * joysticks, each with 2 buttons and 2 pots.) via the port at address 0x201.
! 38: * Getting the state of the buttons is done by reading the game port;
! 39: * buttons 1-4 correspond to bits 4-7 and resistors 1-4 (X1, Y1, X2, Y2)
! 40: * to bits 0-3. If button 1 (resp 2, 3, 4) is pressed, the bit 4 (resp 5,
! 41: * 6, 7) is set to 0 to get the value of a resistor, write the value 0xff
! 42: * at port and wait until the corresponding bit returns to 0.
! 43: */
! 44:
! 45: /*
! 46: * The formulae below only work if u is ``not too large''. See also
! 47: * the discussion in microtime.s
! 48: */
! 49: #define USEC2TICKS(u) (((u) * 19549) >> 14)
! 50: #define TICKS2USEC(u) (((u) * 3433) >> 12)
! 51:
! 52:
! 53: #define JOYPART(d) (minor(d) & 1)
! 54: #define JOYUNIT(d) minor(d) >> 1 & 3
! 55:
! 56: #ifndef JOY_TIMEOUT
! 57: #define JOY_TIMEOUT 2000 /* 2 milliseconds */
! 58: #endif
! 59:
! 60: #define JOY_NPORTS 1
! 61:
! 62: struct joy_softc {
! 63: struct device sc_dev;
! 64: int port;
! 65: int x_off[2], y_off[2];
! 66: int timeout[2];
! 67: };
! 68:
! 69: int joyopen(dev_t, int, int, struct proc *);
! 70: int joyclose(dev_t, int, int, struct proc *);
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