diff options
Diffstat (limited to 'src/mess/machine/abc800kb.c')
-rw-r--r-- | src/mess/machine/abc800kb.c | 518 |
1 files changed, 518 insertions, 0 deletions
diff --git a/src/mess/machine/abc800kb.c b/src/mess/machine/abc800kb.c new file mode 100644 index 00000000000..6ef5b4e1921 --- /dev/null +++ b/src/mess/machine/abc800kb.c @@ -0,0 +1,518 @@ +/********************************************************************** + + Luxor ABC-800 keyboard emulation + + Copyright MESS Team. + Visit http://mamedev.org for licensing and usage restrictions. + +**********************************************************************/ + +/* + +PCB Layout +---------- + +KTC A65-02201-201K + + |---------------| +|---| CN1 |---------------------------------------------------| +| | +| LS193 LS374 8048 22-008-03 | +| LS13 LS193 22-050-3B 5.9904MHz | +| | +| | +| | +| | +| | +| | +| | +| | +|-----------------------------------------------------------------------| + +Notes: + All IC's shown. + + 8048 - National Semiconductor INS8048 MCU "8048-132" + 22-008-03 - Exar Semiconductor XR22-008-03 keyboard matrix capacitive readout latch + 22-050-3B - Exar Semiconductor XR22-050-3B keyboard matrix row driver with 4 to 12 decoder/demultiplexer + CN1 - keyboard data connector + + +XR22-008-03 Pinout +------------------ + _____ _____ + D0 1 |* \_/ | 20 Vcc + D1 2 | | 19 _CLR + D2 3 | | 18 Q0 + D3 4 | | 17 Q1 + HYS 5 | 22-008-03 | 16 Q2 + D4 6 | | 15 Q3 + D5 7 | | 14 Q4 + D6 8 | | 13 Q5 + D7 9 | | 12 Q6 + GND 10 |_____________| 11 Q7 + + +XR22-050-3B Pinout +------------------ + _____ _____ + Y8 1 |* \_/ | 20 Vcc + Y9 2 | | 19 Y7 + Y10 3 | | 18 Y6 + Y11 4 | | 17 Y5 + _STB 5 | 22-050-3B | 16 Y4 + A0 6 | | 15 Y3 + A1 7 | | 14 Y2 + A2 8 | | 13 Y1 + A3 9 | | 12 Y0 + GND 10 |_____________| 11 OE? + +*/ + +#include "abc800kb.h" + + + +//************************************************************************** +// MACROS / CONSTANTS +//************************************************************************** + +#define I8048_TAG "i8048" + + + +//************************************************************************** +// DEVICE DEFINITIONS +//************************************************************************** + +const device_type ABC800_KEYBOARD = &device_creator<abc800_keyboard_device>; + + +//------------------------------------------------- +// device_config_complete - perform any +// operations now that the configuration is +// complete +//------------------------------------------------- + +void abc800_keyboard_device::device_config_complete() +{ + // inherit a copy of the static data + const abc800_keyboard_interface *intf = reinterpret_cast<const abc800_keyboard_interface *>(static_config()); + if (intf != NULL) + *static_cast<abc800_keyboard_interface *>(this) = *intf; + + // or initialize to defaults if none provided + else + { + memset(&m_out_clock_cb, 0, sizeof(m_out_clock_cb)); + memset(&m_out_keydown_cb, 0, sizeof(m_out_keydown_cb)); + } + + m_shortname = "abc800kb"; +} + + +//------------------------------------------------- +// ROM( abc800_keyboard ) +//------------------------------------------------- + +ROM_START( abc800_keyboard ) + ROM_REGION( 0x400, I8048_TAG, 0 ) + ROM_LOAD( "8048-132.z9", 0x0000, 0x0400, CRC(05c4dce5) SHA1(1824c5d304bbd09f97056cfa408e1b18b5219ba2) ) +ROM_END + + +//------------------------------------------------- +// rom_region - device-specific ROM region +//------------------------------------------------- + +const rom_entry *abc800_keyboard_device::device_rom_region() const +{ + return ROM_NAME( abc800_keyboard ); +} + + +//------------------------------------------------- +// ADDRESS_MAP( abc800_keyboard_io ) +//------------------------------------------------- + +static ADDRESS_MAP_START( abc800_keyboard_io, AS_IO, 8, abc800_keyboard_device ) + AM_RANGE(MCS48_PORT_P1, MCS48_PORT_P1) AM_READWRITE(kb_p1_r, kb_p1_w) + AM_RANGE(MCS48_PORT_P2, MCS48_PORT_P2) AM_WRITE(kb_p2_w) + AM_RANGE(MCS48_PORT_T1, MCS48_PORT_T1) AM_READ(kb_t1_r) +ADDRESS_MAP_END + + +//------------------------------------------------- +// MACHINE_DRIVER( abc800_keyboard ) +//------------------------------------------------- + +static MACHINE_CONFIG_FRAGMENT( abc800_keyboard ) + MCFG_CPU_ADD(I8048_TAG, I8048, XTAL_5_9904MHz) + MCFG_CPU_IO_MAP(abc800_keyboard_io) +MACHINE_CONFIG_END + + +//------------------------------------------------- +// machine_config_additions - device-specific +// machine configurations +//------------------------------------------------- + +machine_config_constructor abc800_keyboard_device::device_mconfig_additions() const +{ + return MACHINE_CONFIG_NAME( abc800_keyboard ); +} + + +//------------------------------------------------- +// INPUT_PORTS( abc800_keyboard ) +//------------------------------------------------- + +INPUT_PORTS_START( abc800_keyboard ) + PORT_START("X0") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!') + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("CAPS LOCK") PORT_CODE(KEYCODE_CAPSLOCK) PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK)) + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("CTRL") PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_MAMEKEY(LCONTROL)) + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Left SHIFT") PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1) + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED ) // 80 + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNUSED ) // 81 + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED ) // 82 + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED ) // 83 + + PORT_START("X1") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('"') + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q') + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A') + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z') + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad -") PORT_CODE(KEYCODE_MINUS_PAD) PORT_CHAR(UCHAR_MAMEKEY(MINUS_PAD)) + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad RETURN") PORT_CODE(KEYCODE_ENTER_PAD) PORT_CHAR(UCHAR_MAMEKEY(ENTER_PAD)) + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED ) // 84 + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED ) // 85 + + PORT_START("X2") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#') + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W') + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S') + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X') + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED ) // 18 + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 6") PORT_CODE(KEYCODE_6_PAD) PORT_CHAR(UCHAR_MAMEKEY(6_PAD)) + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 3") PORT_CODE(KEYCODE_3_PAD) PORT_CHAR(UCHAR_MAMEKEY(3_PAD)) + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED ) // 86 + + PORT_START("X3") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("4 \xC2\xA4") PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR(0x00A4) + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E') + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D') + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C') + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 9") PORT_CODE(KEYCODE_9_PAD) PORT_CHAR(UCHAR_MAMEKEY(9_PAD)) + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 5") PORT_CODE(KEYCODE_5_PAD) PORT_CHAR(UCHAR_MAMEKEY(5_PAD)) + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 2") PORT_CODE(KEYCODE_2_PAD) PORT_CHAR(UCHAR_MAMEKEY(2_PAD)) + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("SPACE") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') + + PORT_START("X4") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%') + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R') + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F') + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V') + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 8") PORT_CODE(KEYCODE_8_PAD) PORT_CHAR(UCHAR_MAMEKEY(8_PAD)) + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 4") PORT_CODE(KEYCODE_4_PAD) PORT_CHAR(UCHAR_MAMEKEY(4_PAD)) + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 1") PORT_CODE(KEYCODE_1_PAD) PORT_CHAR(UCHAR_MAMEKEY(1_PAD)) + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad .") PORT_CODE(KEYCODE_DEL_PAD) PORT_CHAR(UCHAR_MAMEKEY(DEL_PAD)) + + PORT_START("X5") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&') + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T') + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G') + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B') + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 7") PORT_CODE(KEYCODE_7_PAD) PORT_CHAR(UCHAR_MAMEKEY(7_PAD)) + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("PF4") PORT_CODE(KEYCODE_F4) PORT_CHAR(UCHAR_MAMEKEY(F4)) + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("PF6") PORT_CODE(KEYCODE_F6) PORT_CHAR(UCHAR_MAMEKEY(F6)) + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Keypad 0") PORT_CODE(KEYCODE_0_PAD) PORT_CHAR(UCHAR_MAMEKEY(0_PAD)) + + PORT_START("X6") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('/') + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y') + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H') + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N') + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("PF2") PORT_CODE(KEYCODE_F2) PORT_CHAR(UCHAR_MAMEKEY(F2)) + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("PF3") PORT_CODE(KEYCODE_F3) PORT_CHAR(UCHAR_MAMEKEY(F3)) + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("PF5") PORT_CODE(KEYCODE_F5) PORT_CHAR(UCHAR_MAMEKEY(F5)) + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("PF8") PORT_CODE(KEYCODE_F8) PORT_CHAR(UCHAR_MAMEKEY(F8)) + + PORT_START("X7") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(') + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U') + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J') + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M') + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("PF1") PORT_CODE(KEYCODE_F1) PORT_CHAR(UCHAR_MAMEKEY(F1)) + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("RETURN") PORT_CODE(KEYCODE_ENTER) PORT_CHAR('\r') + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(UTF8_LEFT) PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8) + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("PF7") PORT_CODE(KEYCODE_F7) PORT_CHAR(UCHAR_MAMEKEY(F7)) + + PORT_START("X8") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')') + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I') + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K') + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR(';') + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('<') PORT_CHAR('>') + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(u_UMLAUT " " U_UMLAUT) PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(0x00FC) PORT_CHAR(0x00DC) + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_BACKSLASH2) PORT_CHAR('\'') PORT_CHAR('*') + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(UTF8_RIGHT) PORT_CODE(KEYCODE_TAB) PORT_CHAR(UCHAR_MAMEKEY(TAB)) + + PORT_START("X9") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR('=') + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O') + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L') + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR(':') + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(e_ACUTE " " E_ACUTE) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR(0x00E9) PORT_CHAR(0x00C9) + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(a_RING " " A_RING) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR(0x00E5) PORT_CHAR(0x00C5) + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(a_UMLAUT " " A_UMLAUT) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR(0x00E4) PORT_CHAR(0x00C4) + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Right SHIFT") PORT_CODE(KEYCODE_RSHIFT) + + PORT_START("X10") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('+') PORT_CHAR('?') + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P') + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME(o_UMLAUT " " O_UMLAUT) PORT_CODE(KEYCODE_COLON) PORT_CHAR(0x00F6) PORT_CHAR(0x00D6) + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('-') PORT_CHAR('_') + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED ) // 87 + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNUSED ) // 88 + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED ) // 89 + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED ) // 8a + + PORT_START("X11") + PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNUSED ) // 03 + PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNUSED ) // 23 + PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED ) // 96 + PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNUSED ) // 8b + PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED ) // 8c + PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNUSED ) // 8d + PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED ) // 8e + PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED ) // 8f +INPUT_PORTS_END + + +//------------------------------------------------- +// input_ports - device-specific input ports +//------------------------------------------------- + +ioport_constructor abc800_keyboard_device::device_input_ports() const +{ + return INPUT_PORTS_NAME( abc800_keyboard ); +} + + + +//************************************************************************** +// INLINE HELPERS +//************************************************************************** + +//------------------------------------------------- +// serial_output - +//------------------------------------------------- + +inline void abc800_keyboard_device::serial_output(int state) +{ + if (m_txd != state) + { + m_txd = state; + } +} + + +//------------------------------------------------- +// serial_clock - +//------------------------------------------------- + +inline void abc800_keyboard_device::serial_clock() +{ + m_clk = !m_clk; + + m_out_clock_func(!m_clk); +} + + +//------------------------------------------------- +// keydown - +//------------------------------------------------- + +inline void abc800_keyboard_device::key_down(int state) +{ + if (m_keydown != state) + { + m_keydown = state; + + m_out_keydown_func(state); + } +} + + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// abc800_keyboard_device - constructor +//------------------------------------------------- + +abc800_keyboard_device::abc800_keyboard_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) + : device_t(mconfig, ABC800_KEYBOARD, "ABC-800 Keyboard", tag, owner, clock), + m_maincpu(*this, I8048_TAG), + m_row(0), + m_txd(1), + m_clk(0), + m_stb(1), + m_keydown(1) +{ +} + + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void abc800_keyboard_device::device_start() +{ + // allocate timers + m_serial_timer = timer_alloc(); + m_serial_timer->adjust(attotime::from_hz(XTAL_5_9904MHz/(3*5)/20), 0, attotime::from_hz(XTAL_5_9904MHz/(3*5)/20)); // ??? + + // resolve callbacks + m_out_clock_func.resolve(m_out_clock_cb, *this); + m_out_keydown_func.resolve(m_out_keydown_cb, *this); + + // state saving + save_item(NAME(m_row)); + save_item(NAME(m_clk)); + save_item(NAME(m_txd)); + save_item(NAME(m_stb)); + save_item(NAME(m_keydown)); +} + + +//------------------------------------------------- +// device_reset - device-specific reset +//------------------------------------------------- + +void abc800_keyboard_device::device_reset() +{ +} + + +//------------------------------------------------- +// device_timer - handler timer events +//------------------------------------------------- + +void abc800_keyboard_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) +{ + serial_clock(); +} + + +//------------------------------------------------- +// rxd_w - keyboard receive data write +//------------------------------------------------- + +WRITE_LINE_MEMBER( abc800_keyboard_device::rxd_w ) +{ + m_maincpu->set_input_line(MCS48_INPUT_IRQ, state ? CLEAR_LINE : ASSERT_LINE); +} + + +//------------------------------------------------- +// txd_r - keyboard transmit data read +//------------------------------------------------- + +READ_LINE_MEMBER( abc800_keyboard_device::txd_r ) +{ + return m_txd; +} + + +//------------------------------------------------- +// kb_p1_r - keyboard column data read +//------------------------------------------------- + +READ8_MEMBER( abc800_keyboard_device::kb_p1_r ) +{ + static const char *const ABC800_KEY_ROW[] = { "X0", "X1", "X2", "X3", "X4", "X5", "X6", "X7", "X8", "X9", "X10", "X11" }; + UINT8 data = 0xff; + + if (m_stb && m_row < 12) + { + data = ioport(ABC800_KEY_ROW[m_row])->read(); + } + + return data; +} + + +//------------------------------------------------- +// kb_p1_w - keyboard row write +//------------------------------------------------- + +WRITE8_MEMBER( abc800_keyboard_device::kb_p1_w ) +{ + /* + + bit description + + 0 A0 + 1 A1 + 2 A2 + 3 A3 + 4 ? + 5 ? + 6 + 7 + + */ + + // keyboard row + if (!m_stb) + { + m_row = data & 0x0f; + } +} + + +//------------------------------------------------- +// kb_p2_w - keyboard control write +//------------------------------------------------- + +WRITE8_MEMBER( abc800_keyboard_device::kb_p2_w ) +{ + /* + + bit description + + 0 + 1 + 2 + 3 + 4 TxD + 5 ? + 6 22-008-03 CLR, 22-050-3B STB + 7 22-008-03 HYS + + */ + + // TxD + serial_output(!BIT(data, 4)); + + // keydown + key_down(!BIT(data, 5)); + + // strobe + m_stb = BIT(data, 6); +} + + +//------------------------------------------------- +// kb_t1_r - keyboard T1 timer read +//------------------------------------------------- + +READ8_MEMBER( abc800_keyboard_device::kb_t1_r ) +{ + return m_clk; +} |