// license:GPL-2.0+
// copyright-holders:Dirk Best
/***************************************************************************
Amiga Keyboard
We currently emulate the Amiga 500 keyboard controller, which was
also used in later Amiga 2000 keyboards.
TODO: - Natural keyboard mode doesn't work with shifted characters,
they get sent in the wrong order (core bug?)
- Move 6500/1 to its own CPU core so that it can be shared with
other systems
- Add support for more keyboard controllers (pending on them
getting dumped)
Amiga 1000 keyboard part numbers (manufactured by Mitsumi):
- 327063-01 R56-2144 English
- 327063-02 British
- 327063-03 R56-2153 German
- 327063-04 R56-2152 French
- 327063-05 R56-2154 Italian
***************************************************************************/
#include "amigakbd.h"
#include "machine/rescap.h"
//**************************************************************************
// DEVICE DEFINITIONS
//**************************************************************************
const device_type AMIGAKBD = &device_creator<amigakbd_device>;
//-------------------------------------------------
// machine_config_additions - device-specific
// machine configurations
//-------------------------------------------------
static ADDRESS_MAP_START( mpu6500_map, AS_PROGRAM, 8, amigakbd_device )
ADDRESS_MAP_GLOBAL_MASK(0xfff)
AM_RANGE(0x000, 0x03f) AM_RAM
AM_RANGE(0x080, 0x080) AM_READWRITE(port_a_r, port_a_w)
AM_RANGE(0x081, 0x081) AM_READ_PORT("special") AM_WRITE(port_b_w)
AM_RANGE(0x082, 0x082) AM_WRITE(port_c_w)
AM_RANGE(0x083, 0x083) AM_WRITE(port_d_w)
AM_RANGE(0x084, 0x085) AM_WRITE(latch_w)
AM_RANGE(0x086, 0x087) AM_READ(counter_r)
AM_RANGE(0x088, 0x088) AM_WRITE(transfer_latch_w)
AM_RANGE(0x089, 0x089) AM_WRITE(clear_pa0_detect)
AM_RANGE(0x08a, 0x08a) AM_WRITE(clear_pa1_detect)
AM_RANGE(0x08f, 0x08f) AM_READWRITE(control_r, control_w)
AM_RANGE(0x090, 0x0ff) AM_NOP
AM_RANGE(0x800, 0xfff) AM_ROM AM_REGION("mos6570_036", 0)
ADDRESS_MAP_END
static MACHINE_CONFIG_FRAGMENT( a500_keyboard )
MCFG_CPU_ADD("mos6570_036", M6502, XTAL_3MHz / 2)
MCFG_CPU_PROGRAM_MAP(mpu6500_map)
MACHINE_CONFIG_END
machine_config_constructor amigakbd_device::device_mconfig_additions() const
{
return MACHINE_CONFIG_NAME( a500_keyboard );
}
//-------------------------------------------------
// rom_region - device-specific ROM region
//-------------------------------------------------
ROM_START( mos6570_036 )
ROM_REGION(0x800, "mos6570_036", 0)
ROM_LOAD("328191-02.ic1", 0x000, 0x800, CRC(4a3fc332) SHA1(83b21d0c8b93fc9b9b3b287fde4ec8f3badac5a2))
ROM_END
const tiny_rom_entry *amigakbd_device::device_rom_region() const
{
return ROM_NAME( mos6570_036 );
}
//-------------------------------------------------
// input_ports - device-specific input ports
//-------------------------------------------------
static INPUT_PORTS_START( a500_us_keyboard )
PORT_START("special")
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_LWIN) PORT_CHAR(UCHAR_MAMEKEY(LWIN)) PORT_NAME("Left Amiga") PORT_CHANGED_MEMBER(DEVICE_SELF, amigakbd_device, check_reset, nullptr)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_LALT) PORT_CHAR(UCHAR_MAMEKEY(LALT))
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_SHIFT_2) PORT_NAME("Ctrl") PORT_CHANGED_MEMBER(DEVICE_SELF, amigakbd_device, check_reset, nullptr)
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_RWIN) PORT_CHAR(UCHAR_MAMEKEY(RWIN)) PORT_NAME("Right Amiga") PORT_CHANGED_MEMBER(DEVICE_SELF, amigakbd_device, check_reset, nullptr)
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_RALT) PORT_CHAR(UCHAR_MAMEKEY(RALT))
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
PORT_START("row_d6")
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_ASTERISK) PORT_CHAR(UCHAR_MAMEKEY(ASTERISK))
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_END) PORT_NAME("Unused")
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_CAPSLOCK) PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK)) PORT_NAME("Caps Lock")
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_TAB) PORT_CHAR(9)
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_TILDE) PORT_CHAR('`') PORT_CHAR('~')
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_ESC) PORT_CHAR(UCHAR_MAMEKEY(ESC))
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("row_d5")
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_PLUS_PAD) PORT_CHAR(UCHAR_MAMEKEY(PLUS_PAD))
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z')
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A')
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q')
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_HOME) PORT_NAME("(")
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("row_d4")
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_9_PAD) PORT_CHAR(UCHAR_MAMEKEY(9_PAD))
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X')
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S')
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W')
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('@')
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F1) PORT_CHAR(UCHAR_MAMEKEY(F1))
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("row_d3")
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_6_PAD) PORT_CHAR(UCHAR_MAMEKEY(6_PAD))
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C')
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D')
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E')
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#')
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F2) PORT_CHAR(UCHAR_MAMEKEY(F2))
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("row_d2")
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_3_PAD) PORT_CHAR(UCHAR_MAMEKEY(3_PAD))
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V')
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F')
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R')
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$')
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F3) PORT_CHAR(UCHAR_MAMEKEY(F3))
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("row_d1")
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_DEL_PAD) PORT_CHAR(UCHAR_MAMEKEY(DEL_PAD))
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B')
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G')
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T')
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%')
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F4) PORT_CHAR(UCHAR_MAMEKEY(F4))
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("row_d0")
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_8_PAD) PORT_CHAR(UCHAR_MAMEKEY(8_PAD))
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N')
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H')
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y')
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('^')
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F5) PORT_CHAR(UCHAR_MAMEKEY(F5))
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("row_c7")
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_5_PAD) PORT_CHAR(UCHAR_MAMEKEY(5_PAD))
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M')
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J')
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U')
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('&')
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_PGUP) PORT_NAME(")")
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("row_c6")
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_2_PAD) PORT_CHAR(UCHAR_MAMEKEY(2_PAD))
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<')
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K')
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I')
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('*')
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F6) PORT_CHAR(UCHAR_MAMEKEY(F6))
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("row_c5")
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_ENTER_PAD) PORT_CHAR(UCHAR_MAMEKEY(ENTER_PAD))
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>')
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L')
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O')
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR('(')
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SLASH_PAD) PORT_CHAR('/')
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("row_c4")
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_7_PAD) PORT_CHAR('7') PORT_CHAR('&')
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?')
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR(':')
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P')
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR(')')
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F7) PORT_CHAR(UCHAR_MAMEKEY(F7))
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("row_c3")
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_4_PAD) PORT_CHAR(UCHAR_MAMEKEY(4_PAD))
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR('\'') PORT_CHAR('"')
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('[') PORT_CHAR('{')
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('_')
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F8) PORT_CHAR(UCHAR_MAMEKEY(F8))
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("row_c2")
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1_PAD) PORT_CHAR(UCHAR_MAMEKEY(1_PAD))
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_PGDN) PORT_NAME("Unused")
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(']') PORT_CHAR('}')
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=') PORT_CHAR('+')
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F9) PORT_CHAR(UCHAR_MAMEKEY(F9))
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("row_c1")
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_0_PAD) PORT_CHAR(UCHAR_MAMEKEY(0_PAD))
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_DEL) PORT_CHAR(UCHAR_MAMEKEY(DEL))
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13)
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('\\') PORT_CHAR('|')
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F10) PORT_CHAR(UCHAR_MAMEKEY(F10))
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("row_c0")
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_MINUS_PAD) PORT_CHAR(UCHAR_MAMEKEY(MINUS_PAD))
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_DOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN))
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT))
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_LEFT) PORT_CHAR(UCHAR_MAMEKEY(LEFT))
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(UP))
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F11) PORT_NAME("Help")
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED)
INPUT_PORTS_END
ioport_constructor amigakbd_device::device_input_ports() const
{
return INPUT_PORTS_NAME( a500_us_keyboard );
}
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// amigakbd_device - constructor
//-------------------------------------------------
amigakbd_device::amigakbd_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: device_t(mconfig, AMIGAKBD, "Amiga 500 Keyboard with 6570-036 MPU", tag, owner, clock, "amigakbd", __FILE__),
m_write_kclk(*this),
m_write_kdat(*this),
m_write_krst(*this),
m_mpu(*this, "mos6570_036"),
m_special(*this, "special"),
m_row_d6(*this, "row_d6"),
m_row_d5(*this, "row_d5"),
m_row_d4(*this, "row_d4"),
m_row_d3(*this, "row_d3"),
m_row_d2(*this, "row_d2"),
m_row_d1(*this, "row_d1"),
m_row_d0(*this, "row_d0"),
m_row_c7(*this, "row_c7"),
m_row_c6(*this, "row_c6"),
m_row_c5(*this, "row_c5"),
m_row_c4(*this, "row_c4"),
m_row_c3(*this, "row_c3"),
m_row_c2(*this, "row_c2"),
m_row_c1(*this, "row_c1"),
m_row_c0(*this, "row_c0"),
m_timer(nullptr),
m_watchdog(nullptr),
m_reset(nullptr),
m_kdat(1),
m_kclk(1),
m_port_c(0xff),
m_port_d(0xff),
m_latch(0xffff),
m_counter(0xffff),
m_control(0x00)
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void amigakbd_device::device_start()
{
// resolve callbacks
m_write_kclk.resolve_safe();
m_write_kdat.resolve_safe();
m_write_krst.resolve_safe();
// allocate timers
m_timer = timer_alloc(0, nullptr);
m_watchdog = timer_alloc(1, nullptr);
m_reset = timer_alloc(2, nullptr);
// register for save states
save_item(NAME(m_kdat));
save_item(NAME(m_kclk));
save_item(NAME(m_port_c));
save_item(NAME(m_port_d));
save_item(NAME(m_latch));
save_item(NAME(m_counter));
save_item(NAME(m_control));
}
//-------------------------------------------------
// device_reset - device-specific reset
//-------------------------------------------------
void amigakbd_device::device_reset()
{
// stack starts 0
m_mpu->set_state_int(M6502_S, 0);
m_kdat = 1;
m_kclk = 1;
m_port_c = 0xff;
m_port_d = 0xff;
m_latch = 0xffff; // not initialized by hardware
m_counter = 0xffff; // not initialized by hardware
m_control = 0x00;
m_timer->adjust(attotime::zero, 0, attotime::from_hz(XTAL_3MHz / 2));
m_watchdog->adjust(attotime::from_msec(54));
}
void amigakbd_device::device_timer(emu_timer &timer, device_timer_id tid, int param, void *ptr)
{
switch (tid)
{
// 6500/1 internal timer
case 0:
switch (m_control & 0x03)
{
// interval timer, pulse width measurement (connected to gnd here)
case 0:
case 3:
if (m_counter-- == 0)
{
// counter overflow
m_control |= COUNTER_OVERFLOW;
m_counter = m_latch;
// generate interrupt?
update_irqs();
}
break;
// pulse generator
case 1:
break;
// event counter
case 2:
break;
}
break;
// watchdog
case 1:
m_mpu->reset();
m_watchdog->adjust(attotime::from_msec(54));
break;
// keyboard reset timer
case 2:
m_write_krst(1);
break;
}
}
//**************************************************************************
// IMPLEMENTATION
//**************************************************************************
INPUT_CHANGED_MEMBER( amigakbd_device::check_reset )
{
uint8_t keys = m_special->read();
// ctrl-amiga-amiga pressed?
if (!BIT(keys, 6) && !BIT(keys, 3) && !BIT(keys, 2))
{
m_write_krst(0);
m_reset->adjust(PERIOD_OF_555_MONOSTABLE(RES_K(47), CAP_U(10)));
}
}
void amigakbd_device::update_irqs()
{
if ((m_control & PA1_INT_ENABLED) && (m_control & PA1_NEGATIVE_EDGE))
m_mpu->set_input_line(M6502_IRQ_LINE, ASSERT_LINE);
else if ((m_control & PA0_INT_ENABLED) && (m_control & PA0_POSITIVE_EDGE))
m_mpu->set_input_line(M6502_IRQ_LINE, ASSERT_LINE);
else if ((m_control & COUNTER_INT_ENABLED) && (m_control & COUNTER_OVERFLOW))
m_mpu->set_input_line(M6502_IRQ_LINE, ASSERT_LINE);
else
m_mpu->set_input_line(M6502_IRQ_LINE, CLEAR_LINE);
}
READ8_MEMBER( amigakbd_device::port_a_r )
{
uint8_t data = 0xfc;
// kdat & kclk
data |= m_kdat << 0;
data |= m_kclk << 1;
// port d rows
if (!BIT(m_port_d, 6)) data &= m_row_d6->read();
if (!BIT(m_port_d, 5)) data &= m_row_d5->read();
if (!BIT(m_port_d, 4)) data &= m_row_d4->read();
if (!BIT(m_port_d, 3)) data &= m_row_d3->read();
if (!BIT(m_port_d, 2)) data &= m_row_d2->read();
if (!BIT(m_port_d, 1)) data &= m_row_d1->read();
if (!BIT(m_port_d, 0)) data &= m_row_d0->read();
// port c rows
if (!BIT(m_port_c, 7)) data &= m_row_c7->read();
if (!BIT(m_port_c, 6)) data &= m_row_c6->read();
if (!BIT(m_port_c, 5)) data &= m_row_c5->read();
if (!BIT(m_port_c, 4)) data &= m_row_c4->read();
if (!BIT(m_port_c, 3)) data &= m_row_c3->read();
if (!BIT(m_port_c, 2)) data &= m_row_c2->read();
if (!BIT(m_port_c, 1)) data &= m_row_c1->read();
if (!BIT(m_port_c, 0)) data &= m_row_c0->read();
return data;
}
WRITE8_MEMBER( amigakbd_device::port_a_w )
{
// look for pa0 edge
if (!m_kdat && BIT(data, 0))
{
m_control |= PA0_POSITIVE_EDGE;
update_irqs();
}
// and pa1 edge
if (m_kclk && !BIT(data, 1))
{
m_control |= PA1_NEGATIVE_EDGE;
update_irqs();
}
// update with new values and output
if (m_kdat != BIT(data, 0))
{
m_kdat = BIT(data, 0);
m_write_kdat(m_kdat);
}
if (m_kclk != BIT(data, 1))
{
m_kclk = BIT(data, 1);
m_write_kclk(m_kclk);
}
}
WRITE8_MEMBER( amigakbd_device::port_b_w )
{
// caps lock led
machine().output().set_value("led0", BIT(data, 7));
}
WRITE8_MEMBER( amigakbd_device::port_c_w )
{
m_port_c = data;
}
WRITE8_MEMBER( amigakbd_device::port_d_w )
{
// reset watchdog on 0 -> 1 transition
if (!BIT(m_port_d, 7) && BIT(data, 7))
m_watchdog->adjust(attotime::from_msec(54));
m_port_d = data;
}
WRITE8_MEMBER( amigakbd_device::latch_w )
{
if (offset == 0)
{
m_latch &= 0x00ff;
m_latch |= data << 8;
}
else
{
m_latch &= 0xff00;
m_latch |= data << 0;
}
}
READ8_MEMBER( amigakbd_device::counter_r )
{
if (!space.debugger_access())
{
m_control &= ~COUNTER_OVERFLOW;
update_irqs();
}
if (offset == 0)
return m_counter >> 8;
else
return m_counter >> 0;
}
WRITE8_MEMBER( amigakbd_device::transfer_latch_w )
{
m_control &= ~COUNTER_OVERFLOW;
update_irqs();
m_latch &= 0x00ff;
m_latch |= data << 8;
m_counter = m_latch;
}
WRITE8_MEMBER( amigakbd_device::clear_pa0_detect )
{
m_control &= ~PA0_POSITIVE_EDGE;
update_irqs();
}
WRITE8_MEMBER( amigakbd_device::clear_pa1_detect )
{
m_control &= ~PA1_NEGATIVE_EDGE;
update_irqs();
}
READ8_MEMBER( amigakbd_device::control_r )
{
return m_control;
}
WRITE8_MEMBER( amigakbd_device::control_w )
{
m_control = data;
update_irqs();
}
WRITE_LINE_MEMBER( amigakbd_device::kdat_w )
{
// detect positive edge
if (state && !m_kdat)
{
m_control |= PA0_POSITIVE_EDGE;
update_irqs();
}
m_kdat = state;
}