// 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; //------------------------------------------------- // 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 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, NULL) 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, NULL) 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, NULL) 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 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(NULL), m_watchdog(NULL), m_reset(NULL), 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, NULL); m_watchdog = timer_alloc(1, NULL); m_reset = timer_alloc(2, NULL); // 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 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 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 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; }