// license:BSD-3-Clause // copyright-holders:Vas Crabb /* * TTL-level serial matrix keyboard * * The keyboard MCU handles scanning the matrix and converting key down/ * up events to high-level characters for the host computer. The DIP * switches are only read on startup. The row select outputs are * decoded by a 74159 so only one row can be driven at a time. * * The keyboard has a PCB location for the DIP switches, but they're * unpopulated so all the switches are always off unless you add them or * solder in wire links. The keyclick/bell beeper also appears to be * unpopulated. The 300 Baud option is probably to allow the same MCU * program to be used with other CP/M systems (e.g. Kaypro expects this * Baud rate). * * In addition to the asynchronous serial output, the program supports * synchronous output. If enabled with DIP switches, characters are * sent out MSB first on PB2. PB3 is pulsed low for each bit, and PB4 * is pulsed low after sending a complete byte. PB2 only changes while * PB3 and PB4 are both high; PB4 is pulsed after the pulse on PB3 for * the final bit. There are no delays - data is sent as fast as * possible. Characters are still sent on the asynchronous serial * output when synchronous output is enabled. * * The keyboard understands a very simple single-byte command format. * - If the MSB of the command is set, it will run one of the diagnostic * modes, depending on the three LSBs (same options provided by the * three low DIP switches), and the rest of the command processing is * skipped. * - If bit 6 of the command is set, it will spin until it receives a * command with bit 6 clear (diagnostic mode commands are ignored * while in this state). * - Bit 5 controls the keyboard bell (active high). * - If the /INT pin is tied high, bits 0 and 1 control the Shift Lock * and Caps Lock LEDs, respectively. Note that only the LEDs are * affected, not the keyboard's shift/caps lock state. If /INT is * tied low, these bits are ignored. * - Bits 4, 3 and 2 control PB4, PB3 and PB2 (setting the bit pulls the * output low). This is presumably used to set the state of the * F17/F18/F19 LEDs when synchronous output is not being used. * * The Zorba manual describes a keyboard PROM with enough space to map * all eight modifier combinations independently, however this keyboard * contains no PROMs (just the MCU and demultiplexer), and the internal * MCU EPROM only contains three tables for normal, shift, and control * (caps lock is computed off the normal table by checking for letter * characters). * * The host sets the keyboard USART to 1200 8N2. The MCU generates * serial timings off timer interrupts. Receive synchronisation is * acquired at four times the Baud rate (4800Hz or 1200Hz). * * 0 1 2 3 4 5 6 7 * 0 F1 F13 3 # KP8 i I s S KP2 , < * 1 F2 F14 4 $ KP9 o O d D KP3 . > * 2 F3 F15 5 % break p P f F up / ? * 3 F4 F16 6 ^ home [ { g G down KP0 * 4 F5 F17 7 & tab ] } h H shift KP. * 5 F6 F18 8 * q Q KP4 j J z Z left * 6 F7 F19 9 ( w W KP5 k K x X right * 7 F8 ~ 0 ) e E KP6 l L c C space * 8 F9 \ | - _ r R s-lock ; : v V newline * 9 F10 ESC = + t T ctrl ' " b B KP- * 10 F11 1 ! del y Y c-lock return n N * 11 F12 2 @ KP7 u U a A KP1 m M * * TODO: The two "holes" generate control characters, possibly soft * capslock and shiftlock codes to be used when /INT is tied high. They * don't correspond to physical keys on the Zorba keyboard. */ #include "emu.h" #include "zorbakbd.h" #include "cpu/m6805/m68705.h" #include "speaker.h" namespace { INPUT_PORTS_START(zorba_keyboard) PORT_START("ROW0") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F1") PORT_CODE(KEYCODE_F1) PORT_CHAR(UCHAR_MAMEKEY(F1)) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F13") PORT_CODE(KEYCODE_F13) PORT_CHAR(UCHAR_MAMEKEY(F13)) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("KP 8") PORT_CODE(KEYCODE_8_PAD) PORT_CHAR(UCHAR_MAMEKEY(8_PAD)) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I') PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S') PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("KP 2") PORT_CODE(KEYCODE_2_PAD) PORT_CHAR(UCHAR_MAMEKEY(2_PAD)) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<') PORT_START("ROW1") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F2") PORT_CODE(KEYCODE_F2) PORT_CHAR(UCHAR_MAMEKEY(F2)) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F14") PORT_CODE(KEYCODE_F14) PORT_CHAR(UCHAR_MAMEKEY(F14)) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("KP 9") PORT_CODE(KEYCODE_9_PAD) PORT_CHAR(UCHAR_MAMEKEY(9_PAD)) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O') PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D') PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("KP 3") PORT_CODE(KEYCODE_3_PAD) PORT_CHAR(UCHAR_MAMEKEY(3_PAD)) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>') PORT_START("ROW2") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F3") PORT_CODE(KEYCODE_F3) PORT_CHAR(UCHAR_MAMEKEY(F3)) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F15") PORT_CODE(KEYCODE_F15) PORT_CHAR(UCHAR_MAMEKEY(F15)) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("BREAK") PORT_CODE(KEYCODE_PAUSE) PORT_CHAR(UCHAR_MAMEKEY(PAUSE)) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P') PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F') PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(UP)) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?') PORT_START("ROW3") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F4") PORT_CODE(KEYCODE_F4) PORT_CHAR(UCHAR_MAMEKEY(F4)) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F16") PORT_CODE(KEYCODE_F16) PORT_CHAR(UCHAR_MAMEKEY(F16)) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('^') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("HOME") PORT_CODE(KEYCODE_HOME) PORT_CHAR(UCHAR_MAMEKEY(HOME)) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('[') PORT_CHAR('{') PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G') PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_DOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN)) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("KP 0") PORT_CODE(KEYCODE_0_PAD) PORT_CHAR(UCHAR_MAMEKEY(0_PAD)) PORT_START("ROW4") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F5") PORT_CODE(KEYCODE_F5) PORT_CHAR(UCHAR_MAMEKEY(F5)) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F17") PORT_CODE(KEYCODE_F17) PORT_CHAR(UCHAR_MAMEKEY(F17)) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('&') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("TAB") PORT_CODE(KEYCODE_TAB) PORT_CHAR(9) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(']') PORT_CHAR('}') PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H') PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("SHIFT") PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("KP .") PORT_CODE(KEYCODE_DEL_PAD) PORT_CHAR(UCHAR_MAMEKEY(DEL_PAD)) PORT_START("ROW5") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F6") PORT_CODE(KEYCODE_F6) PORT_CHAR(UCHAR_MAMEKEY(F6)) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F18") PORT_CODE(KEYCODE_F18) PORT_CHAR(UCHAR_MAMEKEY(F18)) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('*') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("KP 4") PORT_CODE(KEYCODE_4_PAD) PORT_CHAR(UCHAR_MAMEKEY(4_PAD)) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J') PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z') PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_LEFT) PORT_CHAR(UCHAR_MAMEKEY(LEFT)) PORT_START("ROW6") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F7") PORT_CODE(KEYCODE_F7) PORT_CHAR(UCHAR_MAMEKEY(F7)) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F19") PORT_CODE(KEYCODE_F19) PORT_CHAR(UCHAR_MAMEKEY(F19)) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR('(') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("KP 5") PORT_CODE(KEYCODE_5_PAD) PORT_CHAR(UCHAR_MAMEKEY(5_PAD)) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K') PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X') PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT)) PORT_START("ROW7") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F8") PORT_CODE(KEYCODE_F8) PORT_CHAR(UCHAR_MAMEKEY(F8)) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("~ PRINT") PORT_CODE(KEYCODE_TILDE) PORT_CHAR('~') PORT_CHAR(UCHAR_MAMEKEY(PRTSCR)) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR(')') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("KP 6") PORT_CODE(KEYCODE_6_PAD) PORT_CHAR(UCHAR_MAMEKEY(6_PAD)) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L') PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C') PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') PORT_START("ROW8") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F9") PORT_CODE(KEYCODE_F9) PORT_CHAR(UCHAR_MAMEKEY(F9)) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('\\') PORT_CHAR('|') PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('_') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("SHIFT LOCK") PORT_CODE(KEYCODE_LALT) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR(':') PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V') PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("NEW LINE") PORT_CODE(KEYCODE_ENTER_PAD) PORT_CHAR(UCHAR_MAMEKEY(ENTER_PAD)) PORT_START("ROW9") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F10") PORT_CODE(KEYCODE_F10) PORT_CHAR(UCHAR_MAMEKEY(F10)) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("ESC") PORT_CODE(KEYCODE_ESC) PORT_CHAR(UCHAR_MAMEKEY(ESC)) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=') PORT_CHAR('+') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("CTRL") PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_MAMEKEY(LCONTROL)) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR('\'') PORT_CHAR('"') PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B') PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("KP -") PORT_CODE(KEYCODE_MINUS_PAD) PORT_CHAR(UCHAR_MAMEKEY(MINUS_PAD)) PORT_START("ROW10") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F11") PORT_CODE(KEYCODE_F11) PORT_CHAR(UCHAR_MAMEKEY(F11)) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!') PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("BS DEL") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8) PORT_CHAR(UCHAR_MAMEKEY(DEL)) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("CAPS LOCK") PORT_CODE(KEYCODE_CAPSLOCK) PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK)) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("RETURN") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N') PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN ) // e0/e2/e3 PORT_START("ROW11") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("F12") PORT_CODE(KEYCODE_F12) PORT_CHAR(UCHAR_MAMEKEY(F12)) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('@') PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("KP 7") PORT_CODE(KEYCODE_7_PAD) PORT_CHAR(UCHAR_MAMEKEY(7_PAD)) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A') PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("KP 1") PORT_CODE(KEYCODE_1_PAD) PORT_CHAR(UCHAR_MAMEKEY(1_PAD)) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M') PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN ) // e1/e3/e4 PORT_START("ROW12") PORT_BIT( 0xff, IP_ACTIVE_LOW, IPT_UNUSED ) // scanned but the tables are too small so it would post garbage PORT_START("ROW13") PORT_BIT( 0xff, IP_ACTIVE_LOW, IPT_UNUSED ) // scanned but the tables are too small so it would post garbage PORT_START("ROW14") PORT_BIT( 0xff, IP_ACTIVE_LOW, IPT_UNUSED ) // scanned but the tables are too small so it would post garbage PORT_START("ROW15") PORT_DIPNAME( 0x07, 0x07, "Diagnostic Mode" ) PORT_DIPLOCATION("DIP:1,2,3") PORT_DIPSETTING( 0x07, "0 (Normal)" ) PORT_DIPSETTING( 0x06, "1 (Dump Tables)" ) PORT_DIPSETTING( 0x05, "2 (Report Revision)" ) PORT_DIPSETTING( 0x04, "3 (Serial Test)" ) PORT_DIPSETTING( 0x03, "4 (Serial Echo)" ) PORT_DIPSETTING( 0x02, "5 (Output Test)" ) PORT_DIPSETTING( 0x01, "6 (Normal)" ) PORT_DIPSETTING( 0x00, "7 (Dump Tables)" ) PORT_DIPNAME( 0x08, 0x08, "Key Repeat" ) PORT_DIPLOCATION("DIP:4") PORT_DIPSETTING( 0x08, DEF_STR(On) ) PORT_DIPSETTING( 0x00, DEF_STR(Off) ) PORT_DIPNAME( 0x10, 0x10, "Baud Rate" ) PORT_DIPLOCATION("DIP:5") PORT_DIPSETTING( 0x10, "1200" ) PORT_DIPSETTING( 0x00, "300" ) PORT_DIPNAME( 0x20, 0x20, "Key Click" ) PORT_DIPLOCATION("DIP:6") PORT_DIPSETTING( 0x20, DEF_STR(On) ) PORT_DIPSETTING( 0x00, DEF_STR(Off) ) PORT_DIPNAME( 0x40, 0x40, "Synchronous Output" ) PORT_DIPLOCATION("DIP:7") PORT_DIPSETTING( 0x40, DEF_STR(Off) ) PORT_DIPSETTING( 0x00, DEF_STR(On) ) PORT_DIPNAME( 0x80, 0x80, "Key Repeat Delay/Rate" ) PORT_DIPLOCATION("DIP:8") PORT_DIPSETTING( 0x80, "0.75s/15cps" ) PORT_DIPSETTING( 0x00, "0.5s/21cps" ) INPUT_PORTS_END ROM_START(zorba_keyboard) ROM_REGION(0x0800, "mcu", 0) ROM_LOAD( "8999-1 3-28-83", 0x080, 0x780, CRC(79fe6c0d) SHA1(4b6fca9379d5199d1347ad1187cbfdebfc4c73e7) ) ROM_END } // anonymous namespace DEFINE_DEVICE_TYPE(ZORBA_KEYBOARD, zorba_keyboard_device, "zorba_kbd", "Zorba Keyboard") zorba_keyboard_device::zorba_keyboard_device( machine_config const &mconfig, char const *tag, device_t *owner, uint32_t clock) : device_t(mconfig, ZORBA_KEYBOARD, tag, owner, clock) , m_rows(*this, "ROW%u", 0) , m_beeper(*this, "beeper") , m_rxd_cb(*this) , m_txd_high(true) , m_row_select(0) { } WRITE_LINE_MEMBER(zorba_keyboard_device::txd_w) { m_txd_high = CLEAR_LINE != state; } READ8_MEMBER(zorba_keyboard_device::mcu_pa_r) { return m_rows[m_row_select]->read(); } READ8_MEMBER(zorba_keyboard_device::mcu_pb_r) { return m_txd_high ? 0x7f : 0xff; } WRITE8_MEMBER(zorba_keyboard_device::mcu_pb_w) { // TODO: bits 2/3/4 do something; some photos show F17/F18/F19 with LED windows m_rxd_cb(BIT(data, 6) ? 0 : 1); m_beeper->set_state(BIT(data, 5) ? 0 : 1); machine().output().set_value("led_key_caps_lock", BIT(data, 1) ? 0 : 1); machine().output().set_value("led_key_shift_lock", BIT(data, 0) ? 0 : 1); } WRITE8_MEMBER(zorba_keyboard_device::mcu_pc_w) { m_row_select = data & 0x0f; } void zorba_keyboard_device::device_start() { m_rxd_cb.resolve_safe(); save_item(NAME(m_txd_high)); save_item(NAME(m_row_select)); m_txd_high = true; m_row_select = 0; } void zorba_keyboard_device::device_add_mconfig(machine_config &config) { // MC68705P3S m68705p3_device &mcu(M68705P3(config, "mcu", 3.579'545_MHz_XTAL)); mcu.porta_r().set(FUNC(zorba_keyboard_device::mcu_pa_r)); mcu.portb_r().set(FUNC(zorba_keyboard_device::mcu_pb_r)); mcu.portb_w().set(FUNC(zorba_keyboard_device::mcu_pb_w)); mcu.portc_w().set(FUNC(zorba_keyboard_device::mcu_pc_w)); // TODO: beeper frequency is unknown, using value from Sun keyboard for now SPEAKER(config, "bell").front_center(); BEEP(config, m_beeper, ATTOSECONDS_TO_HZ(480 * ATTOSECONDS_PER_MICROSECOND)); m_beeper->add_route(ALL_OUTPUTS, "bell", 0.4); } ioport_constructor zorba_keyboard_device::device_input_ports() const { return INPUT_PORTS_NAME(zorba_keyboard); } tiny_rom_entry const *zorba_keyboard_device::device_rom_region() const { return ROM_NAME(zorba_keyboard); }