/* * userport_synergy_joystick.c - Userport Synergy 3-joy 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. * */ /* Synergy userport joystick adapter (PLUS4) PLUS4 | I/O | NOTES -------------------- B | I | PB0 <- JOY1/2/3 UP K | I | PB1 <- JOY1/2/3 DOWN 4 | I | PB2 <- JOY1/2/3 LEFT 5 | I | PB3 <- JOY1/2/3 RIGHT 6 | I | PB4 <- JOY1/2/3 FIRE 7 | O | PB5 -> JOY1 SELECT J | O | PB6 -> JOY2 SELECT F | O | PB7 -> JOY3 SELECT */ #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_synergy_joystick.h" #include "machine.h" #include "uiapi.h" #include "log.h" static int userport_joy_synergy_enable = 0; static int userport_joystick_synergy_select = 0; /* Some prototypes are needed */ static uint8_t userport_joystick_synergy_read_pbx(uint8_t orig); static void userport_joystick_synergy_store_pbx(uint8_t value, int pulse); static int userport_joystick_synergy_write_snapshot_module(snapshot_t *s); static int userport_joystick_synergy_read_snapshot_module(snapshot_t *s); static int userport_joystick_synergy_enable(int value); static userport_device_t synergy_device = { "Synergy userport joy adapter", /* device name */ JOYSTICK_ADAPTER_ID_GENERIC_USERPORT, /* this is a joystick adapter */ USERPORT_DEVICE_TYPE_JOYSTICK_ADAPTER, /* device is a joystick adapter */ userport_joystick_synergy_enable, /* enable function */ userport_joystick_synergy_read_pbx, /* read pb0-pb7 function */ userport_joystick_synergy_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_joystick_synergy_write_snapshot_module, /* snapshot write function */ userport_joystick_synergy_read_snapshot_module /* snapshot read function */ }; /* ------------------------------------------------------------------------- */ static int userport_joystick_synergy_enable(int value) { int val = value ? 1 : 0; if (userport_joy_synergy_enable == val) { return 0; } if (val) { /* check if a different joystick adapter is already active */ if (joystick_adapter_get_id()) { ui_error("Joystick adapter %s is already active", joystick_adapter_get_name()); return -1; } joystick_adapter_activate(JOYSTICK_ADAPTER_ID_GENERIC_USERPORT, "Userport Synergy joystick adapter"); /* Enable 3 extra joystick ports, without +5VDC support */ joystick_adapter_set_ports(3, 0); } else { joystick_adapter_deactivate(); } userport_joy_synergy_enable = val; return 0; } int userport_joystick_synergy_resources_init(void) { return userport_device_register(USERPORT_DEVICE_JOYSTICK_SYNERGY, &synergy_device); } /* ---------------------------------------------------------------------*/ static uint8_t userport_joystick_synergy_read_pbx(uint8_t orig) { uint8_t retval; uint8_t jv3 = ~read_joyport_dig(JOYPORT_3); uint8_t jv4 = ~read_joyport_dig(JOYPORT_4); uint8_t jv5 = ~read_joyport_dig(JOYPORT_5); if (userport_joystick_synergy_select == 0) { retval = (uint8_t)~(jv3 & 0x1f); } else if (userport_joystick_synergy_select == 1) { retval = (uint8_t)~(jv4 & 0x1f); } else { retval = (uint8_t)~(jv5 & 0x1f); } return retval; } static void userport_joystick_synergy_store_pbx(uint8_t value, int pulse) { uint8_t j1 = value & 0x1f; uint8_t j5_select = (value & 0x80) ? 1 : 0; uint8_t j4_select = (value & 0x40) ? 1 : 0; uint8_t j3_select = (value & 0x20) ? 1 : 0; /* sanity check, only 1 value should be 0 */ if (j3_select + j4_select + j5_select == 2) { if (j3_select == 0) { userport_joystick_synergy_select = 0; } else if (j4_select == 0) { userport_joystick_synergy_select = 1; } else { userport_joystick_synergy_select = 2; } } if (userport_joystick_synergy_select == 0) { store_joyport_dig(JOYPORT_3, j1, 0x1f); } else if (userport_joystick_synergy_select == 1) { store_joyport_dig(JOYPORT_4, j1, 0x1f); } else { store_joyport_dig(JOYPORT_5, j1, 0x1f); } } /* ---------------------------------------------------------------------*/ /* UP_JOY_SYNERGY snapshot module format: type | name | description ---------------------------- BYTE | select | joyport select */ static const char synergy_module_name[] = "UPJOYSYNERGY"; #define SYNERGY_VER_MAJOR 0 #define SYNERGY_VER_MINOR 1 static int userport_joystick_synergy_write_snapshot_module(snapshot_t *s) { snapshot_module_t *m; m = snapshot_module_create(s, synergy_module_name, SYNERGY_VER_MAJOR, SYNERGY_VER_MINOR); if (m == NULL) { return -1; } if (SMW_B(m, (uint8_t)userport_joystick_synergy_select) < 0) { snapshot_module_close(m); return -1; } snapshot_module_close(m); if (0 || joyport_snapshot_write_module(s, JOYPORT_3) < 0 || joyport_snapshot_write_module(s, JOYPORT_4) < 0 || joyport_snapshot_write_module(s, JOYPORT_5) < 0) { return -1; } return 0; } static int userport_joystick_synergy_read_snapshot_module(snapshot_t *s) { uint8_t major_version, minor_version; snapshot_module_t *m; m = snapshot_module_open(s, synergy_module_name, &major_version, &minor_version); if (m == NULL) { return -1; } /* Do not accept versions higher than current */ if (snapshot_version_is_bigger(major_version, minor_version, SYNERGY_VER_MAJOR, SYNERGY_VER_MINOR)) { snapshot_set_error(SNAPSHOT_MODULE_HIGHER_VERSION); goto fail; } if (SMR_B_INT(m, &userport_joystick_synergy_select) < 0) { goto fail; } snapshot_module_close(m); if (0 || joyport_snapshot_read_module(s, JOYPORT_3) < 0 || joyport_snapshot_read_module(s, JOYPORT_4) < 0 || joyport_snapshot_read_module(s, JOYPORT_5) < 0) { return -1; } return 0; fail: snapshot_module_close(m); return -1; }