/* * userport_superpad64.c - Userport SuperPad64 8-player SNES pad 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. * */ /* - SuperPad64 SNES PAD (C64/C128/PET/VIC20) C64/C128 | CBM2 | SNES PAD | I/O -------------------------------- C (PB0) | 14 | DATA1 | I D (PB1) | 13 | DATA2 | I E (PB2) | 12 | DATA3 | I F (PB3) | 11 | DATA4 | I H (PB4) | 10 | DATA5 | I J (PB5) | 9 | DATA6 | I K (PB6) | 8 | DATA7 | I L (PB7) | 7 | DATA8 | I 8 (PC2) | 5 | CLOCK | O M (PA2) | 2 | LATCH | O */ #include "vice.h" #include #include #include #include "cmdline.h" #include "resources.h" #include "joyport.h" #include "joystick.h" #include "snapshot.h" #include "snespad.h" #include "userport.h" #include "userport_superpad64.h" #include "machine.h" #include "uiapi.h" #include "log.h" static int userport_superpad64_enabled = 0; static uint8_t counter = 0; static uint8_t latch_line = 0; /* Some prototypes are needed */ static uint8_t userport_superpad64_read_pbx(uint8_t orig); static void userport_superpad64_store_pa2(uint8_t value); static int userport_superpad64_write_snapshot_module(snapshot_t *s); static int userport_superpad64_read_snapshot_module(snapshot_t *s); static int userport_superpad64_enable(int value); static void userport_superpad64_powerup(void); static userport_device_t userport_superpad64_device = { "Userport SuperPad64", /* device name */ JOYSTICK_ADAPTER_ID_USERPORT_SUPERPAD64, /* this is a joystick adapter */ USERPORT_DEVICE_TYPE_JOYSTICK_ADAPTER, /* device is a joystick adapter */ userport_superpad64_enable, /* enable function */ userport_superpad64_read_pbx, /* read pb0-pb7 function */ NULL, /* NO store pb0-pb7 function */ NULL, /* NO read pa2 pin function */ userport_superpad64_store_pa2, /* store pa2 pin function */ NULL, /* NO read pa3 pin function */ NULL, /* NO store pa3 pin function */ 1, /* pc pin IS 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 */ userport_superpad64_powerup, /* powerup function */ userport_superpad64_write_snapshot_module, /* snapshot write function */ userport_superpad64_read_snapshot_module /* snapshot read function */ }; /* ------------------------------------------------------------------------- */ static int userport_superpad64_enable(int value) { int val = value ? 1 : 0; if (userport_superpad64_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_superpad64_device.name, joystick_adapter_get_name()); return -1; } counter = 0; joystick_adapter_activate(JOYSTICK_ADAPTER_ID_USERPORT_SUPERPAD64, userport_superpad64_device.name); /* Enable 8 extra joystick ports, without +5VDC support */ joystick_adapter_set_ports(8, 0); joystick_set_snes_mapping(JOYPORT_3); joystick_set_snes_mapping(JOYPORT_4); joystick_set_snes_mapping(JOYPORT_5); joystick_set_snes_mapping(JOYPORT_6); joystick_set_snes_mapping(JOYPORT_7); joystick_set_snes_mapping(JOYPORT_8); } else { joyport_clear_mapping(JOYPORT_3); joyport_clear_mapping(JOYPORT_4); joyport_clear_mapping(JOYPORT_5); joyport_clear_mapping(JOYPORT_6); joyport_clear_mapping(JOYPORT_7); joyport_clear_mapping(JOYPORT_8); joystick_adapter_deactivate(); } userport_superpad64_enabled = val; return 0; } int userport_superpad64_resources_init(void) { return userport_device_register(USERPORT_DEVICE_SUPERPAD64, &userport_superpad64_device); } /* ---------------------------------------------------------------------*/ static void userport_superpad64_powerup(void) { counter = 0; } static void userport_superpad64_store_pa2(uint8_t value) { uint8_t new_latch = 0; new_latch = value & 1; if (latch_line && !new_latch) { counter = 0; } latch_line = new_latch; } static uint8_t userport_superpad64_read_pbx(uint8_t orig) { uint8_t retval; uint16_t portval1 = get_joystick_value(JOYPORT_3); uint16_t portval2 = get_joystick_value(JOYPORT_4); uint16_t portval3 = get_joystick_value(JOYPORT_5); uint16_t portval4 = get_joystick_value(JOYPORT_6); uint16_t portval5 = get_joystick_value(JOYPORT_7); uint16_t portval6 = get_joystick_value(JOYPORT_8); uint16_t portval7 = get_joystick_value(JOYPORT_9); uint16_t portval8 = get_joystick_value(JOYPORT_10); switch (counter) { case SNESPAD_BUTTON_A: retval = (uint8_t)((portval1 & 0x10) >> 4); retval |= (uint8_t)((portval2 & 0x10) >> 3); retval |= (uint8_t)((portval3 & 0x10) >> 2); retval |= (uint8_t)((portval4 & 0x10) >> 1); retval |= (uint8_t)(portval5 & 0x10); retval |= (uint8_t)((portval6 & 0x10) << 1); retval |= (uint8_t)((portval7 & 0x10) << 2); retval |= (uint8_t)((portval8 & 0x10) << 3); break; case SNESPAD_BUTTON_B: retval = (uint8_t)((portval1 & 0x20) >> 5); retval |= (uint8_t)((portval2 & 0x20) >> 4); retval |= (uint8_t)((portval3 & 0x20) >> 3); retval |= (uint8_t)((portval4 & 0x20) >> 2); retval |= (uint8_t)((portval5 & 0x20) >> 1); retval |= (uint8_t)(portval6 & 0x20); retval |= (uint8_t)((portval7 & 0x20) << 1); retval |= (uint8_t)((portval8 & 0x20) << 2); break; case SNESPAD_BUTTON_X: retval = (uint8_t)((portval1 & 0x40) >> 6); retval |= (uint8_t)((portval2 & 0x40) >> 5); retval |= (uint8_t)((portval3 & 0x40) >> 4); retval |= (uint8_t)((portval4 & 0x40) >> 3); retval |= (uint8_t)((portval5 & 0x40) >> 2); retval |= (uint8_t)((portval6 & 0x40) >> 1); retval |= (uint8_t)(portval7 & 0x40); retval |= (uint8_t)((portval8 & 0x40) << 1); break; case SNESPAD_BUTTON_Y: retval = (uint8_t)((portval1 & 0x80) >> 7); retval |= (uint8_t)((portval2 & 0x80) >> 6); retval |= (uint8_t)((portval3 & 0x80) >> 5); retval |= (uint8_t)((portval4 & 0x80) >> 4); retval |= (uint8_t)((portval5 & 0x80) >> 3); retval |= (uint8_t)((portval6 & 0x80) >> 2); retval |= (uint8_t)((portval7 & 0x80) >> 1); retval |= (uint8_t)(portval8 & 0x80); break; case SNESPAD_BUMPER_LEFT: retval = (uint8_t)((portval1 & 0x100) >> 8); retval |= (uint8_t)((portval2 & 0x100) >> 7); retval |= (uint8_t)((portval3 & 0x100) >> 6); retval |= (uint8_t)((portval4 & 0x100) >> 5); retval |= (uint8_t)((portval5 & 0x100) >> 4); retval |= (uint8_t)((portval6 & 0x100) >> 3); retval |= (uint8_t)((portval7 & 0x100) >> 2); retval |= (uint8_t)((portval8 & 0x100) >> 1); break; case SNESPAD_BUMPER_RIGHT: retval = (uint8_t)((portval1 & 0x200) >> 9); retval |= (uint8_t)((portval2 & 0x200) >> 8); retval |= (uint8_t)((portval3 & 0x200) >> 7); retval |= (uint8_t)((portval4 & 0x200) >> 6); retval |= (uint8_t)((portval5 & 0x200) >> 5); retval |= (uint8_t)((portval6 & 0x200) >> 4); retval |= (uint8_t)((portval7 & 0x200) >> 3); retval |= (uint8_t)((portval8 & 0x200) >> 2); break; case SNESPAD_BUTTON_SELECT: retval = (uint8_t)((portval1 & 0x400) >> 10); retval |= (uint8_t)((portval2 & 0x400) >> 9); retval |= (uint8_t)((portval3 & 0x400) >> 8); retval |= (uint8_t)((portval4 & 0x400) >> 7); retval |= (uint8_t)((portval5 & 0x400) >> 6); retval |= (uint8_t)((portval6 & 0x400) >> 5); retval |= (uint8_t)((portval7 & 0x400) >> 4); retval |= (uint8_t)((portval8 & 0x400) >> 3); break; case SNESPAD_BUTTON_START: retval = (uint8_t)((portval1 & 0x800) >> 11); retval |= (uint8_t)((portval2 & 0x800) >> 10); retval |= (uint8_t)((portval3 & 0x800) >> 9); retval |= (uint8_t)((portval4 & 0x800) >> 8); retval |= (uint8_t)((portval5 & 0x800) >> 7); retval |= (uint8_t)((portval6 & 0x800) >> 6); retval |= (uint8_t)((portval7 & 0x800) >> 5); retval |= (uint8_t)((portval8 & 0x800) >> 4); break; case SNESPAD_UP: retval = (uint8_t)(portval1 & 1); retval |= (uint8_t)((portval2 & 1) << 1); retval |= (uint8_t)((portval3 & 1) << 2); retval |= (uint8_t)((portval4 & 1) << 3); retval |= (uint8_t)((portval5 & 1) << 4); retval |= (uint8_t)((portval6 & 1) << 5); retval |= (uint8_t)((portval7 & 1) << 6); retval |= (uint8_t)((portval8 & 1) << 7); break; case SNESPAD_DOWN: retval = (uint8_t)((portval1 & 2) >> 1); retval |= (uint8_t)(portval2 & 2); retval |= (uint8_t)((portval3 & 2) << 1); retval |= (uint8_t)((portval4 & 2) << 2); retval |= (uint8_t)((portval5 & 2) << 3); retval |= (uint8_t)((portval6 & 2) << 4); retval |= (uint8_t)((portval7 & 2) << 5); retval |= (uint8_t)((portval8 & 2) << 6); break; case SNESPAD_LEFT: retval = (uint8_t)((portval1 & 4) >> 2); retval |= (uint8_t)((portval2 & 4) >> 1); retval |= (uint8_t)(portval3 & 4); retval |= (uint8_t)((portval4 & 4) << 1); retval |= (uint8_t)((portval5 & 4) << 2); retval |= (uint8_t)((portval6 & 4) << 3); retval |= (uint8_t)((portval7 & 4) << 4); retval |= (uint8_t)((portval8 & 4) << 5); break; case SNESPAD_RIGHT: retval = (uint8_t)((portval1 & 8) >> 3); retval |= (uint8_t)((portval2 & 8) >> 2); retval |= (uint8_t)((portval3 & 8) >> 1); retval |= (uint8_t)(portval4 & 8); retval |= (uint8_t)((portval5 & 8) << 1); retval |= (uint8_t)((portval6 & 8) << 2); retval |= (uint8_t)((portval7 & 8) << 3); retval |= (uint8_t)((portval8 & 8) << 4); break; case SNESPAD_BIT_12_1: case SNESPAD_BIT_13_1: case SNESPAD_BIT_14_1: case SNESPAD_BIT_15_1: retval = 0x00; break; case SNESPAD_EOS: retval = 0xff; break; default: retval = 0xff; } if (counter < SNESPAD_EOS) { counter++; } return (~retval); } /* ---------------------------------------------------------------------*/ /* USERPORT_SUPERPAD64 snapshot module format: type | name | description ----------------------------- BYTE | COUNTER | current count BYTE | LATCH | latch line state */ static const char snap_module_name[] = "UPSUPERPAD64"; #define SNAP_MAJOR 0 #define SNAP_MINOR 1 static int userport_superpad64_write_snapshot_module(snapshot_t *s) { snapshot_module_t *m; m = snapshot_module_create(s, snap_module_name, SNAP_MAJOR, SNAP_MINOR); if (m == NULL) { return -1; } if (0 || (SMW_B(m, counter) < 0) || (SMW_B(m, latch_line) < 0)) { snapshot_module_close(m); return -1; } return snapshot_module_close(m); } static int userport_superpad64_read_snapshot_module(snapshot_t *s) { uint8_t major_version, minor_version; snapshot_module_t *m; m = snapshot_module_open(s, snap_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, SNAP_MAJOR, SNAP_MINOR)) { snapshot_set_error(SNAPSHOT_MODULE_HIGHER_VERSION); goto fail; } if (0 || (SMR_B(m, &counter) < 0) || (SMR_B(m, &latch_line) < 0)) { goto fail; } return snapshot_module_close(m); fail: snapshot_module_close(m); return -1; }