/* * cardkey.c - Cardco Cardkey 1 keypad 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. * */ #include "vice.h" #include #include #include #include "joyport.h" #include "keyboard.h" #include "cardkey.h" /* Control port <--> Cardkey connections: cport | keypad | I/O ------------------------- 1 | KEY0 | I 2 | KEY1 | I 3 | KEY2 | I 4 | KEY3 | I 6 | PRESS | I 8 | GND | Ground Works on: - native port(s) (x64/x64sc/scpu64/xvic) - sidcart joystick port (xplus4) The keypad keys ground certain lines when pressed. The keypad has the following layout: KEYPAD KEYMAP KEYS ----------------- --------------------- | 7 | 8 | 9 | * | | 1 | 2 | 3 | 4 | ----------------- --------------------- | 4 | 5 | 6 | D | | 6 | 7 | 8 | 9 | ----------------- --------------------- | 1 | 2 | 3 | - | | 11 | 12 | 13 | 14 | ----------------- --------------------- | . | 0 | E | + | | 16 | 17 | 18 | 19 | ----------------- --------------------- E = Enter The keypad grounds a line when a key is pressed. The following logic is used: KEY3 = 8 || 9 || + || - || / || * || dot || ret KEY2 = 4 || 5 || 6 || 7 || / || * || dot || ret KEY1 = 2 || 3 || 6 || 7 || + || - || dot || ret KEY0 = 1 || 3 || 5 || 7 || 9 || - || * || ret which results in: KEY PRESSED KEY3 KEY2 KEY1 KEY0 ----------- ---- ---- ---- ---- 0 0 0 0 0 1 0 0 0 1 2 0 0 1 0 3 0 0 1 1 4 0 1 0 0 5 0 1 0 1 6 0 1 1 0 7 0 1 1 1 8 1 0 0 0 9 1 0 0 1 + 1 0 1 0 - 1 0 1 1 / 1 1 0 0 * 1 1 0 1 . 1 1 1 0 Enter 1 1 1 1 The PRESS (Fire) line is used to indicate a key press. */ #define ROW_COL(x, y) ((x * 4) + y) #define KEYPAD_KEY_7 ROW_COL(0,0) #define KEYPAD_KEY_8 ROW_COL(0,1) #define KEYPAD_KEY_9 ROW_COL(0,2) #define KEYPAD_KEY_MULT ROW_COL(0,3) #define KEYPAD_KEY_4 ROW_COL(1,0) #define KEYPAD_KEY_5 ROW_COL(1,1) #define KEYPAD_KEY_6 ROW_COL(1,2) #define KEYPAD_KEY_DIV ROW_COL(1,3) #define KEYPAD_KEY_1 ROW_COL(2,0) #define KEYPAD_KEY_2 ROW_COL(2,1) #define KEYPAD_KEY_3 ROW_COL(2,2) #define KEYPAD_KEY_MINUS ROW_COL(2,3) #define KEYPAD_KEY_DOT ROW_COL(3,0) #define KEYPAD_KEY_0 ROW_COL(3,1) #define KEYPAD_KEY_ENTER ROW_COL(3,2) #define KEYPAD_KEY_PLUS ROW_COL(3,3) #define KEYPAD_NUM_KEYS 16 static int cardkey_enabled = 0; static unsigned int keys[KEYPAD_NUM_KEYS]; /* ------------------------------------------------------------------------- */ static void handle_keys(int row, int col, int pressed) { /* sanity check of the rows and cols, rows should be 0-3 and cols should be 1-4 */ if (row < 0 || row > 3 || col < 1 || col > 4) { return; } /* change the state of the key that the row/col is wired to */ keys[(row * 4) + col - 1] = (unsigned int)pressed; } /* ------------------------------------------------------------------------- */ static int joyport_cardkey_set_enabled(int port, int enabled) { int new_state = enabled ? 1 : 0; if (new_state == cardkey_enabled) { return 0; } if (new_state) { /* enabled, clear keys and register the keypad */ memset(keys, 0, KEYPAD_NUM_KEYS * sizeof(unsigned int)); keyboard_register_joy_keypad(handle_keys); } else { /* disabled, unregister the keypad */ keyboard_register_joy_keypad(NULL); } /* set the current state */ cardkey_enabled = new_state; return 0; } static uint8_t cardkey_read_dig(int port) { unsigned int retval = 0; unsigned int tmp; /* KEY3 8 9 + - / * dot ret */ tmp = keys[KEYPAD_KEY_8] | keys[KEYPAD_KEY_9] | keys[KEYPAD_KEY_PLUS] | keys[KEYPAD_KEY_MINUS] | keys[KEYPAD_KEY_DIV] | keys[KEYPAD_KEY_MULT] | keys[KEYPAD_KEY_DOT] | keys[KEYPAD_KEY_ENTER]; tmp <<= JOYPORT_RIGHT_BIT; /* output key 3 on the joyport 'right' pin */ retval |= tmp; /* KEY2 4 5 6 7 / * dot ret */ tmp = keys[KEYPAD_KEY_4] | keys[KEYPAD_KEY_5] | keys[KEYPAD_KEY_6] | keys[KEYPAD_KEY_7] | keys[KEYPAD_KEY_DIV] | keys[KEYPAD_KEY_MULT] | keys[KEYPAD_KEY_DOT] | keys[KEYPAD_KEY_ENTER]; tmp <<= JOYPORT_LEFT_BIT; /* output key 2 on the joyport 'left' pin */ retval |= tmp; /* KEY1 2 3 6 7 + - dot ret */ tmp = keys[KEYPAD_KEY_2] | keys[KEYPAD_KEY_3] | keys[KEYPAD_KEY_6] | keys[KEYPAD_KEY_7] | keys[KEYPAD_KEY_PLUS] | keys[KEYPAD_KEY_MINUS] | keys[KEYPAD_KEY_DOT] | keys[KEYPAD_KEY_ENTER]; tmp <<= JOYPORT_DOWN_BIT; /* output key 1 on the joyport 'down' pin */ retval |= tmp; /* KEY0 1 3 5 7 9 - * ret */ tmp = keys[KEYPAD_KEY_1] | keys[KEYPAD_KEY_3] | keys[KEYPAD_KEY_5] | keys[KEYPAD_KEY_7] | keys[KEYPAD_KEY_9] | keys[KEYPAD_KEY_MINUS] | keys[KEYPAD_KEY_MULT] | keys[KEYPAD_KEY_ENTER]; retval |= tmp; /* output key 0 on the joyport 'up' pin */ /* output key pressed on 'fire' pin. */ if (retval != 0 || keys[KEYPAD_KEY_0]) { retval |= JOYPORT_FIRE; } joyport_display_joyport(port, JOYPORT_ID_CARDCO_KEYPAD, (uint16_t)retval); return (uint8_t)~retval; } /* ------------------------------------------------------------------------- */ static joyport_t joyport_cardkey_device = { "Keypad (Cardco Cardkey 1)", /* name of the device */ JOYPORT_RES_ID_KEYPAD, /* device is a keypad, only 1 keypad can be active at the same time */ JOYPORT_IS_NOT_LIGHTPEN, /* device is NOT a lightpen */ JOYPORT_POT_OPTIONAL, /* device does NOT use the potentiometer lines */ JOYPORT_5VDC_NOT_NEEDED, /* device does NOT need +5VDC to work */ JOYSTICK_ADAPTER_ID_NONE, /* device is NOT a joystick adapter */ JOYPORT_DEVICE_KEYPAD, /* device is a Keypad */ 0, /* No output bits */ joyport_cardkey_set_enabled, /* device enable/disable function */ cardkey_read_dig, /* digital line read function */ NULL, /* NO digital line store function */ NULL, /* NO pot-x read function */ NULL, /* NO pot-y read function */ NULL, /* NO powerup function */ NULL, /* NO device write snapshot function */ NULL, /* NO device read snapshot function */ NULL, /* NO device hook function */ 0 /* NO device hook function mask */ }; /* ------------------------------------------------------------------------- */ int joyport_cardkey_resources_init(void) { return joyport_device_register(JOYPORT_ID_CARDCO_KEYPAD, &joyport_cardkey_device); }