// license:BSD-3-Clause // copyright-holders:Curt Coder /*************************************************************************** C-80 Pasting: 0-F : as is + (inc) : ^ - (dec) : V M : - GO : X Test Paste: -800^11^22^33^44^55^66^77^88^99^-800 Now press up-arrow to confirm the data has been entered. Commands: R : REGister M : MEMory manipulation G : GO F10 : RESet ESC : BRK Functions (press F1 then the indicated number): 0 : FILL 1 : SAVE 2 : LOAD 3 : LOADP 4 : MOVE 5 : IN 6 : OUT When REG is chosen, use UP to scroll through the list of regs, or press 0 thru C to choose one directly: 0 : SP 1 : PC 2 : AF 3 : BC 4 : DE 5 : HL 6 : AF' 7 : BC' 8 : DE' 9 : HL' A : IFF B : IX C : IY When MEM is chosen, enter the address, press UP, enter data, press UP, enter data of next byte, and so on. ****************************************************************************/ #include "includes/c80.h" #include "sound/wave.h" #include "c80.lh" /* Memory Maps */ static ADDRESS_MAP_START( c80_mem, AS_PROGRAM, 8, c80_state ) ADDRESS_MAP_UNMAP_HIGH AM_RANGE(0x0000, 0x07ff) AM_ROM AM_RANGE(0x0800, 0x0bff) AM_MIRROR(0x400) AM_RAM ADDRESS_MAP_END static ADDRESS_MAP_START( c80_io, AS_IO, 8, c80_state ) ADDRESS_MAP_GLOBAL_MASK(0xff) AM_RANGE(0x7c, 0x7f) AM_DEVREADWRITE(Z80PIO2_TAG, z80pio_device, read, write) AM_RANGE(0xbc, 0xbf) AM_DEVREADWRITE(Z80PIO1_TAG, z80pio_device, read, write) ADDRESS_MAP_END /* Input Ports */ INPUT_CHANGED_MEMBER( c80_state::trigger_reset ) { m_maincpu->set_input_line(INPUT_LINE_RESET, newval ? CLEAR_LINE : ASSERT_LINE); } INPUT_CHANGED_MEMBER( c80_state::trigger_nmi ) { m_maincpu->set_input_line(INPUT_LINE_NMI, newval ? CLEAR_LINE : ASSERT_LINE); } static INPUT_PORTS_START( c80 ) PORT_START("ROW0") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("REG") PORT_CODE(KEYCODE_R) PORT_CHAR('R') PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("GO") PORT_CODE(KEYCODE_G) PORT_CODE(KEYCODE_X) PORT_CHAR('X') PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('D') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('A') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("FCN") PORT_CODE(KEYCODE_F1) PORT_START("ROW1") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("+") PORT_CODE(KEYCODE_UP) PORT_CHAR('^') PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("-") PORT_CODE(KEYCODE_DOWN) PORT_CHAR('V') PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_CHAR('E') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('B') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_START("ROW2") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('F') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("MEM") PORT_CODE(KEYCODE_M) PORT_CHAR('-') PORT_START("SPECIAL") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("RES") PORT_CODE(KEYCODE_F10) PORT_CHANGED_MEMBER(DEVICE_SELF, c80_state, trigger_reset, 0) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("BRK") PORT_CODE(KEYCODE_ESC) PORT_CHANGED_MEMBER(DEVICE_SELF, c80_state, trigger_nmi, 0) INPUT_PORTS_END /* Z80-PIO Interface */ READ8_MEMBER( c80_state::pio1_pa_r ) { /* bit description PA0 keyboard row 0 input PA1 keyboard row 1 input PA2 keyboard row 2 input PA3 PA4 _BSTB input PA5 display enable output (0=enabled, 1=disabled) PA6 tape output PA7 tape input */ UINT8 data = !m_pio1_brdy << 4 | 0x07; int i; for (i = 0; i < 8; i++) { if (!BIT(m_keylatch, i)) { if (!BIT(m_row0->read(), i)) data &= ~0x01; if (!BIT(m_row1->read(), i)) data &= ~0x02; if (!BIT(m_row2->read(), i)) data &= ~0x04; } } data |= (m_cassette->input() < +0.0) << 7; return data; } WRITE8_MEMBER( c80_state::pio1_pa_w ) { /* bit description PA0 keyboard row 0 input PA1 keyboard row 1 input PA2 keyboard row 2 input PA3 PA4 _BSTB input PA5 display enable output (0=enabled, 1=disabled) PA6 tape output PA7 tape input */ m_pio1_a5 = BIT(data, 5); if (!BIT(data, 5)) { m_digit = 0; } m_cassette->output(BIT(data, 6) ? +1.0 : -1.0); } WRITE8_MEMBER( c80_state::pio1_pb_w ) { /* bit description PB0 VQD30 segment A PB1 VQD30 segment B PB2 VQD30 segment C PB3 VQD30 segment D PB4 VQD30 segment E PB5 VQD30 segment F PB6 VQD30 segment G PB7 VQD30 segment P */ if (!m_pio1_a5) { output_set_digit_value(m_digit, data); } m_keylatch = data; } WRITE_LINE_MEMBER( c80_state::pio1_brdy_w ) { m_pio1_brdy = state; if (state) { if (!m_pio1_a5) { m_digit++; } m_pio1->strobe_b(1); m_pio1->strobe_b(0); } } /* Z80 Daisy Chain */ static const z80_daisy_config c80_daisy_chain[] = { { Z80PIO1_TAG }, { Z80PIO2_TAG }, { NULL } }; /* Machine Initialization */ void c80_state::machine_start() { /* register for state saving */ save_item(NAME(m_keylatch)); save_item(NAME(m_digit)); save_item(NAME(m_pio1_a5)); save_item(NAME(m_pio1_brdy)); } /* Machine Driver */ static MACHINE_CONFIG_START( c80, c80_state ) /* basic machine hardware */ MCFG_CPU_ADD(Z80_TAG, Z80, 2500000) /* U880D */ MCFG_CPU_PROGRAM_MAP(c80_mem) MCFG_CPU_IO_MAP(c80_io) MCFG_CPU_CONFIG(c80_daisy_chain) /* video hardware */ MCFG_DEFAULT_LAYOUT( layout_c80 ) /* devices */ MCFG_DEVICE_ADD(Z80PIO1_TAG, Z80PIO, 2500000) MCFG_Z80PIO_OUT_INT_CB(INPUTLINE(Z80_TAG, INPUT_LINE_IRQ0)) MCFG_Z80PIO_IN_PA_CB(READ8(c80_state, pio1_pa_r)) MCFG_Z80PIO_OUT_PA_CB(WRITE8(c80_state, pio1_pa_w)) MCFG_Z80PIO_OUT_PB_CB(WRITE8(c80_state, pio1_pb_w)) MCFG_Z80PIO_OUT_BRDY_CB(WRITELINE(c80_state, pio1_brdy_w)) MCFG_DEVICE_ADD(Z80PIO2_TAG, Z80PIO, 2500000) MCFG_Z80PIO_OUT_INT_CB(INPUTLINE(Z80_TAG, INPUT_LINE_IRQ0)) MCFG_CASSETTE_ADD("cassette") MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_STOPPED | CASSETTE_MOTOR_ENABLED | CASSETTE_SPEAKER_ENABLED ) MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SOUND_WAVE_ADD(WAVE_TAG, "cassette") MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25) /* internal ram */ MCFG_RAM_ADD(RAM_TAG) MCFG_RAM_DEFAULT_SIZE("1K") MACHINE_CONFIG_END /* ROMs */ ROM_START( c80 ) ROM_REGION( 0x10000, Z80_TAG, 0 ) ROM_LOAD( "c80.d3", 0x0000, 0x0400, CRC(ad2b3296) SHA1(14f72cb73a4068b7a5d763cc0e254639c251ce2e) ) ROM_END /* System Drivers */ /* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */ COMP( 1986, c80, 0, 0, c80, c80, driver_device, 0, "Joachim Czepa", "C-80", GAME_SUPPORTS_SAVE )