// license:BSD-3-Clause
// copyright-holders:AJR
/**********************************************************************
CIT-220+ keyboard
This uses more or less the same protocol as the CIT-101 keyboard:
alternating asynchronous serial communication at 4800 baud. In
this case, however, the scancodes are translated by the host
(though letters and digits use ASCII codes by coincidence).
The Lock key is programmable as either Caps Lock or Shift Lock.
TODO: figure out what the remaining two dozen keys are
**********************************************************************/
#include "emu.h"
#include "cit220_kbd.h"
#include "speaker.h"
//**************************************************************************
// LLE KEYBOARD DEVICE
//**************************************************************************
DEFINE_DEVICE_TYPE(CIT220P_KEYBOARD, cit220p_keyboard_device, "cit220p_kbd", "CIT-220+ Keyboard")
cit220p_keyboard_device::cit220p_keyboard_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
: device_t(mconfig, CIT220P_KEYBOARD, tag, owner, clock)
, m_mcu(*this, "mcu")
, m_beeper(*this, "beeper")
, m_rows(*this, "ROW%X", 0U)
, m_modifiers(*this, "MODIFIERS")
, m_txd_callback(*this)
{
}
void cit220p_keyboard_device::device_resolve_objects()
{
m_txd_callback.resolve_safe();
}
void cit220p_keyboard_device::device_start()
{
}
WRITE_LINE_MEMBER(cit220p_keyboard_device::write_rxd)
{
m_mcu->set_input_line(MCS48_INPUT_IRQ, state ? CLEAR_LINE : ASSERT_LINE);
}
u8 cit220p_keyboard_device::mcu_bus_r()
{
u16 scan = m_mcu->p1_r() | (m_mcu->p2_r() ^ 0x10) << 8;
u8 ret = 0xff;
for (int i = 0; i < 13; i++)
if (!BIT(scan, i))
ret &= m_rows[i]->read();
return ret;
}
u8 cit220p_keyboard_device::mcu_p2_r()
{
return BIT(m_modifiers->read(), 1) ? 0xff : 0xbf;
}
void cit220p_keyboard_device::mcu_p2_w(u8 data)
{
m_beeper->set_state(BIT(data, 5));
m_txd_callback(!BIT(data, 7));
}
void cit220p_keyboard_device::mcu_movx_w(u8 data)
{
// TODO: LEDs?
}
void cit220p_keyboard_device::prog_map(address_map &map)
{
map(0x000, 0xfff).rom().region("program", 0);
}
void cit220p_keyboard_device::ext_map(address_map &map)
{
map(0x00, 0x00).mirror(0xff).w(FUNC(cit220p_keyboard_device::mcu_movx_w));
}
INPUT_PORTS_START(cit220p_keyboard)
PORT_START("MODIFIERS") // Shift keys might be the other way around
PORT_BIT(1, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Ctrl") PORT_CHAR(UCHAR_SHIFT_2) PORT_CODE(KEYCODE_LCONTROL)
PORT_BIT(2, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Left Shift") PORT_CHAR(UCHAR_SHIFT_1) PORT_CODE(KEYCODE_LSHIFT)
PORT_BIT(4, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Right Shift") PORT_CODE(KEYCODE_RSHIFT)
PORT_START("ROW0")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Row 0, Key 0")
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Row 0, Key 1")
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Set-Up") PORT_CHAR(UCHAR_MAMEKEY(F3)) PORT_CODE(KEYCODE_F3)
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Row 0, Key 3")
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Row 0, Key 4")
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Row 0, Key 5")
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Row 0, Key 6")
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Row 0, Key 7")
PORT_START("ROW1")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Back Space") PORT_CHAR(0x08) PORT_CODE(KEYCODE_BACKSPACE)
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Tab") PORT_CHAR(0x09) PORT_CODE(KEYCODE_TAB)
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Line Feed") PORT_CHAR(0x0a) PORT_CODE(KEYCODE_RALT)
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Row 1, Key 3")
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Row 1, Key 4")
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Return") PORT_CHAR(0x0d) PORT_CODE(KEYCODE_ENTER)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Row 1, Key 6")
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Row 1, Key 7")
PORT_START("ROW2")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(UCHAR_MAMEKEY(0_PAD)) PORT_CODE(KEYCODE_0_PAD)
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(UCHAR_MAMEKEY(1_PAD)) PORT_CODE(KEYCODE_1_PAD)
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(UCHAR_MAMEKEY(2_PAD)) PORT_CODE(KEYCODE_2_PAD)
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(UCHAR_MAMEKEY(3_PAD)) PORT_CODE(KEYCODE_3_PAD)
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(UCHAR_MAMEKEY(4_PAD)) PORT_CODE(KEYCODE_4_PAD)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(UCHAR_MAMEKEY(5_PAD)) PORT_CODE(KEYCODE_5_PAD)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(UCHAR_MAMEKEY(6_PAD)) PORT_CODE(KEYCODE_6_PAD)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(UCHAR_MAMEKEY(7_PAD)) PORT_CODE(KEYCODE_7_PAD)
PORT_START("ROW3")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(UCHAR_MAMEKEY(8_PAD)) PORT_CODE(KEYCODE_8_PAD)
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(UCHAR_MAMEKEY(9_PAD)) PORT_CODE(KEYCODE_9_PAD)
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("PF1") PORT_CODE(KEYCODE_NUMLOCK)
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("PF2") PORT_CODE(KEYCODE_EQUALS_PAD)
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("PF3") PORT_CODE(KEYCODE_SLASH_PAD)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("PF4") PORT_CODE(KEYCODE_ASTERISK)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(UCHAR_MAMEKEY(MINUS_PAD)) PORT_CODE(KEYCODE_MINUS_PAD)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(UCHAR_MAMEKEY(COMMA_PAD)) PORT_CODE(KEYCODE_PLUS_PAD)
PORT_START("ROW4")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(UCHAR_MAMEKEY(ENTER_PAD)) PORT_CODE(KEYCODE_ENTER_PAD)
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(UCHAR_MAMEKEY(DEL_PAD)) PORT_CODE(KEYCODE_DEL_PAD)
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Esc") PORT_CHAR(0x1b) PORT_CODE(KEYCODE_ESC)
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Space Bar") PORT_CHAR(0x20) PORT_CODE(KEYCODE_SPACE)
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Row 4, Key 4")
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Row 4, Key 5")
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Row 4, Key 6")
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Row 4, Key 7")
PORT_START("ROW5")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('`') PORT_CHAR('~') PORT_CODE(KEYCODE_TILDE)
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('-') PORT_CHAR('_') PORT_CODE(KEYCODE_MINUS)
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('=') PORT_CHAR('+') PORT_CODE(KEYCODE_EQUALS)
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(';') PORT_CHAR(':') PORT_CODE(KEYCODE_COLON)
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('\'') PORT_CHAR('"') PORT_CODE(KEYCODE_QUOTE)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('<') PORT_CHAR('>') PORT_CODE(KEYCODE_BACKSLASH2)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(',') PORT_CODE(KEYCODE_COMMA)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('.') PORT_CODE(KEYCODE_STOP)
PORT_START("ROW6")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('0') PORT_CHAR(')') PORT_CODE(KEYCODE_0)
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('1') PORT_CHAR('!') PORT_CODE(KEYCODE_1)
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('2') PORT_CHAR('@') PORT_CODE(KEYCODE_2)
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('3') PORT_CHAR('#') PORT_CODE(KEYCODE_3)
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('4') PORT_CHAR('$') PORT_CODE(KEYCODE_4)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('5') PORT_CHAR('%') PORT_CODE(KEYCODE_5)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('6') PORT_CHAR('^') PORT_CODE(KEYCODE_6)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('7') PORT_CHAR('&') PORT_CODE(KEYCODE_7)
PORT_START("ROW7")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('8') PORT_CHAR('*') PORT_CODE(KEYCODE_8)
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('9') PORT_CHAR('(') PORT_CODE(KEYCODE_9)
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Row 7, Key 2")
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Row 7, Key 3")
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Row 7, Key 4")
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Lock") PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK)) PORT_CODE(KEYCODE_CAPSLOCK)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Compose Character") PORT_CHAR(UCHAR_MAMEKEY(LALT)) PORT_CODE(KEYCODE_LALT)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('/') PORT_CHAR('?') PORT_CODE(KEYCODE_SLASH)
PORT_START("ROW8")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Row 8, Key 0")
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('a') PORT_CHAR('A') PORT_CODE(KEYCODE_A)
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('b') PORT_CHAR('B') PORT_CODE(KEYCODE_B)
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('c') PORT_CHAR('C') PORT_CODE(KEYCODE_C)
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('d') PORT_CHAR('D') PORT_CODE(KEYCODE_D)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('e') PORT_CHAR('E') PORT_CODE(KEYCODE_E)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('f') PORT_CHAR('F') PORT_CODE(KEYCODE_F)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('g') PORT_CHAR('G') PORT_CODE(KEYCODE_G)
PORT_START("ROW9")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('h') PORT_CHAR('H') PORT_CODE(KEYCODE_H)
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('i') PORT_CHAR('I') PORT_CODE(KEYCODE_I)
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('j') PORT_CHAR('J') PORT_CODE(KEYCODE_J)
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('k') PORT_CHAR('K') PORT_CODE(KEYCODE_K)
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('l') PORT_CHAR('L') PORT_CODE(KEYCODE_L)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('m') PORT_CHAR('M') PORT_CODE(KEYCODE_M)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('n') PORT_CHAR('N') PORT_CODE(KEYCODE_N)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('o') PORT_CHAR('O') PORT_CODE(KEYCODE_O)
PORT_START("ROWA")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('p') PORT_CHAR('P') PORT_CODE(KEYCODE_P)
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('q') PORT_CHAR('Q') PORT_CODE(KEYCODE_Q)
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('r') PORT_CHAR('R') PORT_CODE(KEYCODE_R)
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('s') PORT_CHAR('S') PORT_CODE(KEYCODE_S)
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('t') PORT_CHAR('T') PORT_CODE(KEYCODE_T)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('u') PORT_CHAR('U') PORT_CODE(KEYCODE_U)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('v') PORT_CHAR('V') PORT_CODE(KEYCODE_V)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('w') PORT_CHAR('W') PORT_CODE(KEYCODE_W)
PORT_START("ROWB")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('x') PORT_CHAR('X') PORT_CODE(KEYCODE_X)
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('y') PORT_CHAR('Y') PORT_CODE(KEYCODE_Y)
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('z') PORT_CHAR('Z') PORT_CODE(KEYCODE_Z)
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('[') PORT_CHAR('{') PORT_CODE(KEYCODE_OPENBRACE)
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR('\\') PORT_CHAR('|') PORT_CODE(KEYCODE_BACKSLASH)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(']') PORT_CHAR('}') PORT_CODE(KEYCODE_CLOSEBRACE)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Row B, Key 6")
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Row B, Key 7")
PORT_START("ROWC")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Row C, Key 0")
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Row C, Key 1")
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Row C, Key 2")
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(UCHAR_MAMEKEY(UP)) PORT_CODE(KEYCODE_UP)
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(UCHAR_MAMEKEY(LEFT)) PORT_CODE(KEYCODE_LEFT)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(UCHAR_MAMEKEY(DOWN)) PORT_CODE(KEYCODE_DOWN)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CHAR(UCHAR_MAMEKEY(RIGHT)) PORT_CODE(KEYCODE_RIGHT)
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_UNUSED)
INPUT_PORTS_END
ioport_constructor cit220p_keyboard_device::device_input_ports() const
{
return INPUT_PORTS_NAME(cit220p_keyboard);
}
void cit220p_keyboard_device::device_add_mconfig(machine_config &config)
{
I8035(config, m_mcu, 2376000); // type and clock guessed
m_mcu->set_addrmap(AS_PROGRAM, &cit220p_keyboard_device::prog_map);
m_mcu->set_addrmap(AS_IO, &cit220p_keyboard_device::ext_map);
m_mcu->bus_in_cb().set(FUNC(cit220p_keyboard_device::mcu_bus_r));
m_mcu->p2_in_cb().set(FUNC(cit220p_keyboard_device::mcu_p2_r));
m_mcu->p2_out_cb().set(FUNC(cit220p_keyboard_device::mcu_p2_w));
m_mcu->t0_in_cb().set_ioport("MODIFIERS").bit(2);
m_mcu->t1_in_cb().set_ioport("MODIFIERS").bit(0);
SPEAKER(config, "mono").front_center();
BEEP(config, m_beeper, 1000).add_route(ALL_OUTPUTS, "mono", 1.0); // unknown frequency
}
ROM_START(cit220p_kbd)
ROM_REGION(0x1000, "program", 0)
ROM_LOAD("v00_kbd.bin", 0x0000, 0x1000, CRC(f9d24190) SHA1(c4e9ef8188afb18de373f2a537ca9b7a315bfb76))
ROM_END
const tiny_rom_entry *cit220p_keyboard_device::device_rom_region() const
{
return ROM_NAME(cit220p_kbd);
}