/* * userport_spt_joystick.c - Userport Stupid Pet Tricks joystick adapter emulation. * * Written by * Marco van den Heuvel * * This file is part of VICE, the Versatile Commodore Emulator. * See README for copyright notice. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA * 02111-1307 USA. * */ /* Userport Stupid Pet Tricks joystick adapter (C64/C128/CBM2/PET/VIC20) C64/C128 | CBM2 | PET | VIC20 | NAME ------------------------------------ D | 13 | D | D | LEFT (PB0) E | 12 | E | E | RIGHT (PB1) F | 11 | F | F | UP (PB2) H | 10 | H | H | DOWN (PB3) K | 8 | K | K | FIRE (PB5) Note that the userport +5VDC is NOT connected to the joystick +5VDC pin. */ #include "vice.h" #include #include #include #include "cmdline.h" #include "resources.h" #include "joyport.h" #include "joystick.h" #include "snapshot.h" #include "userport.h" #include "userport_spt_joystick.h" #include "machine.h" #include "uiapi.h" #include "log.h" /* SPT joystick bits */ #define SPT_JOYSTICK_LEFT_BIT 0 #define SPT_JOYSTICK_RIGHT_BIT 1 #define SPT_JOYSTICK_UP_BIT 2 #define SPT_JOYSTICK_DOWN_BIT 3 #define SPT_JOYSTICK_FIRE_BIT 5 /* SPT joystick bit values */ #define SPT_JOYSTICK_LEFT (1 << SPT_JOYSTICK_LEFT_BIT) #define SPT_JOYSTICK_RIGHT (1 << SPT_JOYSTICK_RIGHT_BIT) #define SPT_JOYSTICK_UP (1 << SPT_JOYSTICK_UP_BIT) #define SPT_JOYSTICK_DOWN (1 << SPT_JOYSTICK_DOWN_BIT) #define SPT_JOYSTICK_FIRE (1 << SPT_JOYSTICK_FIRE_BIT) static int userport_spt_joystick_enabled = 0; /* Some prototypes are needed */ static uint8_t userport_spt_joystick_read_pbx(uint8_t orig); static void userport_spt_joystick_store_pbx(uint8_t value, int pulse); static int userport_spt_joystick_write_snapshot_module(snapshot_t *s); static int userport_spt_joystick_read_snapshot_module(snapshot_t *s); static int userport_spt_joystick_enable(int value); static userport_device_t userport_spt_joystick_device = { "Userport Stupid Pet Tricks joystick adapter", /* device name */ JOYSTICK_ADAPTER_ID_GENERIC_USERPORT, /* this is a joystick adapter */ USERPORT_DEVICE_TYPE_JOYSTICK_ADAPTER, /* device is a joystick adapter */ userport_spt_joystick_enable, /* enable function */ userport_spt_joystick_read_pbx, /* read pb0-pb7 function */ userport_spt_joystick_store_pbx, /* store pb0-pb7 function */ NULL, /* NO read pa2 pin function */ NULL, /* NO store pa2 pin function */ NULL, /* NO read pa3 pin function */ NULL, /* NO store pa3 pin function */ 0, /* pc pin is NOT needed */ NULL, /* NO store sp1 pin function */ NULL, /* NO read sp1 pin function */ NULL, /* NO store sp2 pin function */ NULL, /* NO read sp2 pin function */ NULL, /* NO reset function */ NULL, /* NO powerup function */ userport_spt_joystick_write_snapshot_module, /* snapshot write function */ userport_spt_joystick_read_snapshot_module /* snapshot read function */ }; /* ------------------------------------------------------------------------- */ static int userport_spt_joystick_enable(int value) { int val = value ? 1 : 0; if (userport_spt_joystick_enabled == val) { return 0; } if (val) { /* check if a different joystick adapter is already active */ if (joystick_adapter_get_id()) { ui_error("%s is a joystick adapter, but joystick adapter %s is already active", userport_spt_joystick_device.name, joystick_adapter_get_name()); return -1; } joystick_adapter_activate(JOYSTICK_ADAPTER_ID_GENERIC_USERPORT, userport_spt_joystick_device.name); /* Enable 1 extra joystick port, without +5VDC support */ joystick_adapter_set_ports(1, 0); } else { joystick_adapter_deactivate(); } userport_spt_joystick_enabled = val; return 0; } int userport_spt_joystick_resources_init(void) { return userport_device_register(USERPORT_DEVICE_SPT_JOYSTICK, &userport_spt_joystick_device); } /* ---------------------------------------------------------------------*/ static void userport_spt_joystick_store_pbx(uint8_t value, int pulse) { uint8_t output = 0; /* convert from spt joystick pins to joyport pins */ output = ((value & SPT_JOYSTICK_LEFT) >> SPT_JOYSTICK_LEFT_BIT) << JOYPORT_LEFT_BIT; output |= ((value & SPT_JOYSTICK_RIGHT) >> SPT_JOYSTICK_RIGHT_BIT) << JOYPORT_RIGHT_BIT; output |= ((value & SPT_JOYSTICK_DOWN) >> SPT_JOYSTICK_DOWN_BIT) << JOYPORT_DOWN_BIT; output |= ((value & SPT_JOYSTICK_UP) >> SPT_JOYSTICK_UP_BIT) << JOYPORT_UP_BIT; output |= ((value & SPT_JOYSTICK_FIRE) >> SPT_JOYSTICK_FIRE_BIT) << JOYPORT_FIRE_BIT; store_joyport_dig(JOYPORT_3, output, 0x1f); } static uint8_t userport_spt_joystick_read_pbx(uint8_t orig) { uint8_t retval = 0; uint8_t portval = ~read_joyport_dig(JOYPORT_3); /* convert from joyport pins to spt joystick pins */ retval |= ((portval & JOYPORT_LEFT) >> JOYPORT_LEFT_BIT) << SPT_JOYSTICK_LEFT_BIT; retval |= ((portval & JOYPORT_RIGHT) >> JOYPORT_RIGHT_BIT) << SPT_JOYSTICK_RIGHT_BIT; retval |= ((portval & JOYPORT_DOWN) >> JOYPORT_DOWN_BIT) << SPT_JOYSTICK_DOWN_BIT; retval |= ((portval & JOYPORT_UP) >> JOYPORT_UP_BIT) << SPT_JOYSTICK_UP_BIT; retval |= ((portval & JOYPORT_FIRE) >> JOYPORT_FIRE_BIT) << SPT_JOYSTICK_FIRE_BIT; return ~(retval); } /* ---------------------------------------------------------------------*/ static int userport_spt_joystick_write_snapshot_module(snapshot_t *s) { return joyport_snapshot_write_module(s, JOYPORT_3); } static int userport_spt_joystick_read_snapshot_module(snapshot_t *s) { return joyport_snapshot_read_module(s, JOYPORT_3); }