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Diffstat (limited to 'src/mame/machine/amigakbd.c')
-rw-r--r-- | src/mame/machine/amigakbd.c | 574 |
1 files changed, 574 insertions, 0 deletions
diff --git a/src/mame/machine/amigakbd.c b/src/mame/machine/amigakbd.c new file mode 100644 index 00000000000..c6d1bb05d34 --- /dev/null +++ b/src/mame/machine/amigakbd.c @@ -0,0 +1,574 @@ +// 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 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; +} |