// 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);
}