// license:GPL-2.0+ // copyright-holders:Dirk Best /*************************************************************************** Epson PX-4 Note: We are missing a dump of the slave 7508 CPU that controls the keyboard and some other things. ***************************************************************************/ #include "emu.h" #include "bus/centronics/ctronics.h" #include "bus/epson_sio/epson_sio.h" #include "bus/generic/carts.h" #include "bus/generic/slot.h" #include "bus/rs232/rs232.h" #include "cpu/z80/z80.h" #include "imagedev/cassette.h" #include "machine/nvram.h" #include "machine/ram.h" #include "machine/timer.h" #include "sound/spkrdev.h" #include "diserial.h" #include "emupal.h" #include "screen.h" #include "softlist.h" #include "speaker.h" #include "coreutil.h" #include "px4.lh" //************************************************************************** // CONSTANTS //************************************************************************** #define VERBOSE 1 //************************************************************************** // MACROS //************************************************************************** #define ART_TX_ENABLED (BIT(m_artcr, 0)) #define ART_RX_ENABLED (BIT(m_artcr, 2)) #define ART_BREAK (BIT(m_artcr, 3)) //************************************************************************** // TYPE DEFINITIONS //************************************************************************** class px4_state : public driver_device, public device_serial_interface { public: px4_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), device_serial_interface(mconfig, *this), m_z80(*this, "maincpu"), m_ram(*this, RAM_TAG), m_nvram(*this, "nvram"), m_centronics(*this, "centronics"), m_ext_cas(*this, "extcas"), m_ext_cas_timer(*this, "extcas_timer"), m_speaker(*this, "speaker"), m_sio(*this, "sio"), m_rs232(*this, "rs232"), m_caps1(*this, "capsule1"), m_caps2(*this, "capsule2"), m_caps1_rom(nullptr), m_caps2_rom(nullptr), m_ctrl1(0), m_icrb(0), m_bankr(0), m_isr(0), m_ier(0), m_sior(0xbf), m_frc_value(0), m_frc_latch(0), m_vadr(0), m_yoff(0), m_artdir(0xff), m_artdor(0xff), m_artsr(0), m_artcr(0), m_one_sec_int_enabled(true), m_key_int_enabled(true), m_key_status(0), m_interrupt_status(0), m_time(), m_clock_state(0), m_ear_last_state(0), m_sio_pin(0), m_serial_rx(0), m_rs232_dcd(0), m_rs232_cts(0), m_centronics_busy(0), m_centronics_perror(0) { } void px4(machine_config &config); void init_px4(); DECLARE_INPUT_CHANGED_MEMBER( key_callback ); protected: void px4_palette(palette_device &palette) const; uint32_t screen_update_px4(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); DECLARE_READ8_MEMBER( icrlc_r ); DECLARE_WRITE8_MEMBER( ctrl1_w ); DECLARE_READ8_MEMBER( icrhc_r ); DECLARE_WRITE8_MEMBER( cmdr_w ); DECLARE_READ8_MEMBER( icrlb_r ); DECLARE_WRITE8_MEMBER( ctrl2_w ); DECLARE_READ8_MEMBER( icrhb_r ); DECLARE_READ8_MEMBER( isr_r ); DECLARE_WRITE8_MEMBER( ier_w ); DECLARE_READ8_MEMBER( str_r ); DECLARE_WRITE8_MEMBER( bankr_w ); DECLARE_READ8_MEMBER( sior_r ); DECLARE_WRITE8_MEMBER( sior_w ); DECLARE_WRITE8_MEMBER( vadr_w ); DECLARE_WRITE8_MEMBER( yoff_w ); DECLARE_WRITE8_MEMBER( fr_w ); DECLARE_WRITE8_MEMBER( spur_w ); DECLARE_READ8_MEMBER( ctgif_r ); DECLARE_WRITE8_MEMBER( ctgif_w ); DECLARE_READ8_MEMBER( artdir_r ); DECLARE_WRITE8_MEMBER( artdor_w ); DECLARE_READ8_MEMBER( artsr_r ); DECLARE_WRITE8_MEMBER( artmr_w ); DECLARE_READ8_MEMBER( iostr_r ); DECLARE_WRITE8_MEMBER( artcr_w ); DECLARE_WRITE8_MEMBER( swr_w ); DECLARE_WRITE8_MEMBER( ioctlr_w ); TIMER_DEVICE_CALLBACK_MEMBER( ext_cassette_read ); TIMER_DEVICE_CALLBACK_MEMBER( frc_tick ); TIMER_DEVICE_CALLBACK_MEMBER( upd7508_1sec_callback ); // serial DECLARE_WRITE_LINE_MEMBER( sio_rx_w ); DECLARE_WRITE_LINE_MEMBER( sio_pin_w ); DECLARE_WRITE_LINE_MEMBER( rs232_rx_w ); DECLARE_WRITE_LINE_MEMBER( rs232_dcd_w ); DECLARE_WRITE_LINE_MEMBER( rs232_dsr_w ); DECLARE_WRITE_LINE_MEMBER( rs232_cts_w ); // centronics DECLARE_WRITE_LINE_MEMBER( centronics_busy_w ) { m_centronics_busy = state; } DECLARE_WRITE_LINE_MEMBER( centronics_perror_w ) { m_centronics_perror = state; } void px4_io(address_map &map); void px4_mem(address_map &map); // driver_device overrides virtual void machine_start() override; virtual void machine_reset() override; // device_serial_interface overrides virtual void tra_callback() override; virtual void tra_complete() override; virtual void rcv_callback() override; virtual void rcv_complete() override; // z80 interrupt sources enum { INT0_7508 = 0x01, INT1_ART = 0x02, INT2_ICF = 0x04, INT3_OVF = 0x08, INT4_EXT = 0x10 }; // 7508 interrupt sources enum { UPD7508_INT_ALARM = 0x02, UPD7508_INT_POWER_FAIL = 0x04, UPD7508_INT_7508_RESET = 0x08, UPD7508_INT_Z80_RESET = 0x10, UPD7508_INT_ONE_SECOND = 0x20 }; // art (asynchronous receiver transmitter) enum { ART_TXRDY = 0x01, // output buffer empty ART_RXRDY = 0x02, // data byte received ART_TXEMPTY = 0x04, // transmit buffer empty ART_PE = 0x08, // parity error ART_OE = 0x10, // overrun error ART_FE = 0x20 // framing error }; void gapnit_interrupt(); DECLARE_WRITE_LINE_MEMBER( serial_rx_w ); void txd_w(int data); void install_rom_capsule(address_space &space, int size, memory_region *mem); // internal devices required_device m_z80; required_device m_ram; required_device m_nvram; required_device m_centronics; required_device m_ext_cas; required_device m_ext_cas_timer; required_device m_speaker; required_device m_sio; required_device m_rs232; required_device m_caps1; required_device m_caps2; memory_region *m_caps1_rom; memory_region *m_caps2_rom; // gapnit register uint8_t m_ctrl1; uint16_t m_icrb; uint8_t m_bankr; uint8_t m_isr; uint8_t m_ier; uint8_t m_sior; // gapnit internal uint16_t m_frc_value; uint16_t m_frc_latch; // gapndi register uint8_t m_vadr; uint8_t m_yoff; // gapnio uint8_t m_artdir; uint8_t m_artdor; uint8_t m_artsr; uint8_t m_artcr; uint8_t m_swr; // 7508 internal bool m_one_sec_int_enabled; bool m_key_int_enabled; uint8_t m_key_status; uint8_t m_interrupt_status; system_time m_time; int m_clock_state; // external cassette/barcode reader int m_ear_last_state; // serial int m_sio_pin; int m_serial_rx; int m_rs232_dcd; int m_rs232_cts; // centronics int m_centronics_busy; int m_centronics_perror; }; class px4p_state : public px4_state { public: px4p_state(const machine_config &mconfig, device_type type, const char *tag) : px4_state(mconfig, type, tag), m_rdnvram(*this, "rdnvram"), m_rdsocket(*this, "ramdisk_socket"), m_ramdisk_address(0), m_ramdisk(nullptr) { } void px4p(machine_config &config); void init_px4p(); private: void px4p_palette(palette_device &palette) const; DECLARE_WRITE8_MEMBER( ramdisk_address_w ); DECLARE_READ8_MEMBER( ramdisk_data_r ); DECLARE_WRITE8_MEMBER( ramdisk_data_w ); DECLARE_READ8_MEMBER( ramdisk_control_r ); void px4p_io(address_map &map); // driver_device overrides virtual void machine_start() override; required_device m_rdnvram; required_device m_rdsocket; offs_t m_ramdisk_address; std::unique_ptr m_ramdisk; }; //************************************************************************** // GAPNIT //************************************************************************** // process interrupts void px4_state::gapnit_interrupt() { // any interrupts enabled and pending? if (m_ier & m_isr & INT0_7508) { m_isr &= ~INT0_7508; m_z80->set_input_line_and_vector(0, ASSERT_LINE, 0xf0); // Z80 } else if (m_ier & m_isr & INT1_ART) m_z80->set_input_line_and_vector(0, ASSERT_LINE, 0xf2); // Z80 else if (m_ier & m_isr & INT2_ICF) m_z80->set_input_line_and_vector(0, ASSERT_LINE, 0xf4); // Z80 else if (m_ier & m_isr & INT3_OVF) m_z80->set_input_line_and_vector(0, ASSERT_LINE, 0xf6); // Z80 else if (m_ier & m_isr & INT4_EXT) m_z80->set_input_line_and_vector(0, ASSERT_LINE, 0xf8); // Z80 else m_z80->set_input_line(0, CLEAR_LINE); } // external cassette or barcode reader input TIMER_DEVICE_CALLBACK_MEMBER( px4_state::ext_cassette_read ) { uint8_t result; int trigger = 0; // sample input state result = (m_ext_cas->input() > 0) ? 1 : 0; // detect transition switch ((m_ctrl1 >> 1) & 0x03) { case 0: // trigger inhibit trigger = 0; break; case 1: // falling edge trigger trigger = m_ear_last_state == 1 && result == 0; break; case 2: // rising edge trigger trigger = m_ear_last_state == 0 && result == 1; break; case 3: // rising/falling edge trigger trigger = m_ear_last_state != result; break; } // generate an interrupt if we need to trigger if (trigger) { m_icrb = m_frc_value; m_isr |= INT2_ICF; gapnit_interrupt(); } // save last state m_ear_last_state = result; } // free running counter TIMER_DEVICE_CALLBACK_MEMBER( px4_state::frc_tick ) { m_frc_value++; if (m_frc_value == 0) { m_isr |= INT3_OVF; gapnit_interrupt(); } } // input capture register low command trigger READ8_MEMBER( px4_state::icrlc_r ) { if (VERBOSE) logerror("%s: icrlc_r\n", machine().describe_context()); // latch value m_frc_latch = m_frc_value; return m_frc_latch & 0xff; } // control register 1 WRITE8_MEMBER( px4_state::ctrl1_w ) { const int rcv_rates[] = { 110, 150, 300, 600, 1200, 2400, 4800, 9600, 75, 1200, 19200, 38400, 200 }; const int tra_rates[] = { 110, 150, 300, 600, 1200, 2400, 4800, 9600, 1200, 75, 19200, 38400, 200 }; if (VERBOSE) logerror("%s: ctrl1_w (0x%02x)\n", machine().describe_context(), data); // baudrate generator int baud = data >> 4; if (baud <= 12) { if (VERBOSE) logerror("rcv baud = %d, tra baud = %d\n", rcv_rates[baud], tra_rates[baud]); set_rcv_rate(rcv_rates[baud]); set_tra_rate(tra_rates[baud]); } m_ctrl1 = data; } // input capture register high command trigger READ8_MEMBER( px4_state::icrhc_r ) { if (VERBOSE) logerror("%s: icrhc_r\n", machine().describe_context()); return (m_frc_latch >> 8) & 0xff; } // command register WRITE8_MEMBER( px4_state::cmdr_w ) { if (0) logerror("%s: cmdr_w (0x%02x)\n", machine().describe_context(), data); // clear overflow interrupt? if (BIT(data, 2)) { m_isr &= ~INT3_OVF; gapnit_interrupt(); } } // input capture register low barcode trigger READ8_MEMBER( px4_state::icrlb_r ) { if (VERBOSE) logerror("%s: icrlb_r\n", machine().describe_context()); return m_icrb & 0xff; } // control register 2 WRITE8_MEMBER( px4_state::ctrl2_w ) { if (VERBOSE) logerror("%s: ctrl2_w (0x%02x)\n", machine().describe_context(), data); // bit 0, MIC, cassette output m_ext_cas->output( BIT(data, 0) ? -1.0 : +1.0); // bit 1, RMT, cassette motor if (BIT(data, 1)) { m_ext_cas->change_state(CASSETTE_MOTOR_ENABLED, CASSETTE_MASK_MOTOR); m_ext_cas_timer->adjust(attotime::zero, 0, attotime::from_hz(44100)); } else { m_ext_cas->change_state(CASSETTE_MOTOR_DISABLED, CASSETTE_MASK_MOTOR); m_ext_cas_timer->adjust(attotime::zero); } } // input capture register high barcode trigger READ8_MEMBER( px4_state::icrhb_r ) { if (VERBOSE) logerror("%s: icrhb_r\n", machine().describe_context()); // clear icf interrupt m_isr &= ~INT2_ICF; gapnit_interrupt(); return (m_icrb >> 8) & 0xff; } // interrupt status register READ8_MEMBER( px4_state::isr_r ) { if (VERBOSE) logerror("%s: isr_r\n", machine().describe_context()); return m_isr; } // interrupt enable register WRITE8_MEMBER( px4_state::ier_w ) { if (0) logerror("%s: ier_w (0x%02x)\n", machine().describe_context(), data); m_ier = data; gapnit_interrupt(); } // status register READ8_MEMBER( px4_state::str_r ) { uint8_t data = 0; if (0) logerror("%s: str_r\n", machine().describe_context()); data |= (m_ext_cas)->input() > 0 ? 1 : 0; data |= 1 << 1; // BCRD, barcode reader input data |= 1 << 2; // RDY signal from 7805 data |= 1 << 3; // RDYSIO, enable access to the 7805 data |= m_bankr & 0xf0; // bit 4-7, BANK - memory bank return data; } // helper function to map rom capsules void px4_state::install_rom_capsule(address_space &space, int size, memory_region *mem) { // ram, part 1 space.install_ram(0x0000, 0xdfff - size, m_ram->pointer()); // actual rom data, part 1 if (mem) space.install_rom(0xe000 - size, 0xffff, mem->base() + (size - 0x2000)); // rom data, part 2 if (mem && size != 0x2000) space.install_rom(0x10000 - size, 0xdfff, mem->base()); // ram, continued space.install_ram(0xe000, 0xffff, m_ram->pointer() + 0xe000); } // bank register WRITE8_MEMBER( px4_state::bankr_w ) { address_space &space_program = m_z80->space(AS_PROGRAM); if (0) logerror("%s: bankr_w (0x%02x)\n", machine().describe_context(), data); m_bankr = data; // bank switch switch (data >> 4) { case 0x00: // system bank space_program.install_rom(0x0000, 0x7fff, memregion("os")->base()); space_program.install_ram(0x8000, 0xffff, m_ram->pointer() + 0x8000); break; case 0x04: // memory space_program.install_ram(0x0000, 0xffff, m_ram->pointer()); break; case 0x08: install_rom_capsule(space_program, 0x2000, m_caps1_rom); break; case 0x09: install_rom_capsule(space_program, 0x4000, m_caps1_rom); break; case 0x0a: install_rom_capsule(space_program, 0x8000, m_caps1_rom); break; case 0x0c: install_rom_capsule(space_program, 0x2000, m_caps2_rom); break; case 0x0d: install_rom_capsule(space_program, 0x4000, m_caps2_rom); break; case 0x0e: install_rom_capsule(space_program, 0x8000, m_caps2_rom); break; default: if (VERBOSE) logerror("invalid bank switch value: 0x%02x\n", data >> 4); break; } } // serial io register READ8_MEMBER( px4_state::sior_r ) { if (0) logerror("%s: sior_r 0x%02x\n", machine().describe_context(), m_sior); // reading clock? if (m_clock_state > 0) { switch (m_clock_state++) { case 1: m_sior = (dec_2_bcd(m_time.local_time.year) >> 4) & 0xf; break; case 2: m_sior = dec_2_bcd(m_time.local_time.year) & 0xf; break; case 3: m_sior = dec_2_bcd(m_time.local_time.month + 1); break; case 4: m_sior = dec_2_bcd(m_time.local_time.mday); break; case 5: m_sior = dec_2_bcd(m_time.local_time.hour); break; case 6: m_sior = dec_2_bcd(m_time.local_time.minute); break; case 7: m_sior = dec_2_bcd(m_time.local_time.second); break; case 8: m_sior = dec_2_bcd(m_time.local_time.weekday); break; } // done? if (m_clock_state == 9) m_clock_state = 0; } return m_sior; } // serial io register WRITE8_MEMBER( px4_state::sior_w ) { if (0) logerror("%s: sior_w (0x%02x)\n", machine().describe_context(), data); // writing clock? if (m_clock_state > 0) { time_t time = m_time.time; struct tm *t = localtime(&time); switch (m_clock_state++) { case 1: { if (data < 10) { int year = dec_2_bcd(m_time.local_time.year); year = (year & 0xff0f) | ((data & 0xf) << 4); t->tm_year = bcd_2_dec(year) - 1900; } } break; case 2: { if (data < 10) { int year = dec_2_bcd(m_time.local_time.year); year = (year & 0xfff0) | (data & 0xf); t->tm_year = bcd_2_dec(year) - 1900; } } break; case 3: t->tm_mon = bcd_2_dec(data & 0x7f) - 1; break; case 4: t->tm_mday = bcd_2_dec(data & 0x7f); break; case 5: t->tm_hour = bcd_2_dec(data & 0x7f); break; case 6: t->tm_min = bcd_2_dec(data & 0x7f); break; case 7: t->tm_sec = bcd_2_dec(data & 0x7f); break; case 8: t->tm_wday = bcd_2_dec(data & 0x7f); break; } // update m_time.set(mktime(t)); // done? if (m_clock_state == 9) m_clock_state = 0; } else { m_sior = data; switch (data) { case 0x01: if (VERBOSE) logerror("7508 cmd: Power OFF\n"); break; case 0x02: if (VERBOSE) logerror("7508 cmd: Read Status\n"); if (m_interrupt_status != 0) { if (VERBOSE) logerror("> 7508 has interrupts pending: 0x%02x\n", m_interrupt_status); // signal the interrupt(s) m_sior = 0xc1 | m_interrupt_status; m_interrupt_status = 0x00; } else if (m_key_status != 0xff) { m_sior = m_key_status; m_key_status = 0xff; } else { // nothing happened m_sior = 0xbf; } break; case 0x03: if (VERBOSE) logerror("7508 cmd: KB Reset\n"); break; case 0x04: if (VERBOSE) logerror("7508 cmd: KB Repeat Timer 1 Set\n"); break; case 0x14: if (VERBOSE) logerror("7508 cmd: KB Repeat Timer 2 Set\n"); break; case 0x24: if (VERBOSE) logerror("7508 cmd: KB Repeat Timer 1 Read\n"); break; case 0x34: if (VERBOSE) logerror("7508 cmd: KB Repeat Timer 2 Read\n"); break; case 0x05: if (VERBOSE) logerror("7508 cmd: KB Repeat OFF\n"); break; case 0x15: if (VERBOSE) logerror("7508 cmd: KB Repeat ON\n"); break; case 0x06: if (VERBOSE) logerror("7508 cmd: KB Interrupt OFF\n"); m_key_int_enabled = false; break; case 0x16: if (VERBOSE) logerror("7508 cmd: KB Interrupt ON\n"); m_key_int_enabled = true; break; case 0x07: if (VERBOSE) logerror("7508 cmd: Clock Read\n"); m_clock_state = 1; break; case 0x17: if (VERBOSE) logerror("7508 cmd: Clock Write\n"); m_clock_state = 1; break; case 0x08: if (VERBOSE) logerror("7508 cmd: Power Switch Read\n"); // indicate that the power switch is in the "ON" position m_sior = 0x01; break; case 0x09: if (VERBOSE) logerror("7508 cmd: Alarm Read\n"); break; case 0x19: if (VERBOSE) logerror("7508 cmd: Alarm Set\n"); break; case 0x29: if (VERBOSE) logerror("7508 cmd: Alarm OFF\n"); break; case 0x39: if (VERBOSE) logerror("7508 cmd: Alarm ON\n"); break; case 0x0a: if (VERBOSE) logerror("7508 cmd: DIP Switch Read\n"); m_sior = ioport("dips")->read(); break; case 0x0b: if (VERBOSE) logerror("7508 cmd: Stop Key Interrupt disable\n"); break; case 0x1b: if (VERBOSE) logerror("7508 cmd: Stop Key Interrupt enable\n"); break; case 0x0c: if (VERBOSE) logerror("7508 cmd: 7 chr. Buffer\n"); break; case 0x1c: if (VERBOSE) logerror("7508 cmd: 1 chr. Buffer\n"); break; case 0x0d: if (VERBOSE) logerror("7508 cmd: 1 sec. Interrupt OFF\n"); m_one_sec_int_enabled = false; break; case 0x1d: if (VERBOSE) logerror("7508 cmd: 1 sec. Interrupt ON\n"); m_one_sec_int_enabled = true; break; case 0x0e: if (VERBOSE) logerror("7508 cmd: KB Clear\n"); m_sior = 0xbf; break; case 0x0f: if (VERBOSE) logerror("7508 cmd: System Reset\n"); break; } } } //************************************************************************** // GAPNDL //************************************************************************** // vram start address register WRITE8_MEMBER( px4_state::vadr_w ) { if (VERBOSE) logerror("%s: vadr_w (0x%02x)\n", machine().describe_context(), data); m_vadr = data; } // y offset register WRITE8_MEMBER( px4_state::yoff_w ) { if (VERBOSE) logerror("%s: yoff_w (0x%02x)\n", machine().describe_context(), data); m_yoff = data; } // frame register WRITE8_MEMBER( px4_state::fr_w ) { if (VERBOSE) logerror("%s: fr_w (0x%02x)\n", machine().describe_context(), data); } // speed-up register WRITE8_MEMBER( px4_state::spur_w ) { if (VERBOSE) logerror("%s: spur_w (0x%02x)\n", machine().describe_context(), data); } //************************************************************************** // GAPNIO //************************************************************************** WRITE_LINE_MEMBER( px4_state::serial_rx_w ) { m_serial_rx = state; device_serial_interface::rx_w(state); } WRITE_LINE_MEMBER( px4_state::sio_rx_w ) { if (!BIT(m_swr, 3) && BIT(m_swr, 2)) serial_rx_w(state); } WRITE_LINE_MEMBER( px4_state::sio_pin_w ) { m_sio_pin = state; } WRITE_LINE_MEMBER( px4_state::rs232_rx_w ) { if (BIT(m_swr, 3)) serial_rx_w(state); } WRITE_LINE_MEMBER( px4_state::rs232_dcd_w ) { m_rs232_dcd = state; } WRITE_LINE_MEMBER( px4_state::rs232_dsr_w ) { m_artsr |= !state << 7; } WRITE_LINE_MEMBER( px4_state::rs232_cts_w ) { m_rs232_cts = state; } void px4_state::tra_callback() { if (ART_TX_ENABLED) { if (ART_BREAK) txd_w(0); // transmit break else txd_w(transmit_register_get_data_bit()); // transmit data } else txd_w(1); // transmit mark } void px4_state::tra_complete() { if (m_artsr & ART_TXRDY) { // no more bytes, buffer now empty m_artsr |= ART_TXEMPTY; } else { // transfer next byte transmit_register_setup(m_artdor); m_artsr |= ART_TXRDY; } } void px4_state::rcv_callback() { if (ART_RX_ENABLED) receive_register_update_bit(m_serial_rx); // receive data } void px4_state::rcv_complete() { receive_register_extract(); m_artdir = get_received_char(); // TODO: verify parity and framing // overrun? if (m_artsr & ART_RXRDY) m_artsr |= ART_OE; // set ready and signal interrupt m_artsr |= ART_RXRDY; m_isr |= INT1_ART; gapnit_interrupt(); } // helper function to write to selected serial port void px4_state::txd_w(int data) { if (BIT(m_swr, 2)) // to sio m_sio->tx_w(data); else if (BIT(m_swr, 3)) // to rs232 m_rs232->write_txd(data); // else to cartridge } // cartridge interface READ8_MEMBER( px4_state::ctgif_r ) { if (VERBOSE) logerror("%s: ctgif_r @ 0x%02x\n", machine().describe_context(), offset); return 0x00; } // cartridge interface WRITE8_MEMBER( px4_state::ctgif_w ) { if (VERBOSE) logerror("%s: ctgif_w (0x%02x @ 0x%02x)\n", machine().describe_context(), data, offset); } // art data input register READ8_MEMBER( px4_state::artdir_r ) { if (VERBOSE) logerror("%s: artdir_r (%02x)\n", machine().describe_context(), m_artdir); // clear ready m_artsr &= ~ART_RXRDY; // clear interrupt m_isr &= ~INT1_ART; gapnit_interrupt(); return m_artdir; } // art data output register WRITE8_MEMBER( px4_state::artdor_w ) { if (VERBOSE) logerror("%s: artdor_w (0x%02x)\n", machine().describe_context(), data); m_artdor = data; // new data to transmit? if (ART_TX_ENABLED && is_transmit_register_empty()) { transmit_register_setup(m_artdor); m_artsr &= ~ART_TXEMPTY; } else { // clear ready m_artsr &= ~ART_TXRDY; } } // art status register READ8_MEMBER( px4_state::artsr_r ) { if (0) logerror("%s: artsr_r (%02x)\n", machine().describe_context(), m_artsr); return m_artsr; } // art mode register WRITE8_MEMBER( px4_state::artmr_w ) { int data_bit_count = BIT(data, 2) ? 8 : 7; parity_t parity = BIT(data, 4) ? (BIT(data, 5) ? PARITY_EVEN : PARITY_ODD) : PARITY_NONE; stop_bits_t stop_bits = BIT(data, 7) ? STOP_BITS_2 : STOP_BITS_1; if (VERBOSE) logerror("%s: serial frame setup: %d-%s-%d\n", tag(), data_bit_count, device_serial_interface::parity_tostring(parity), stop_bits); set_data_frame(1, data_bit_count, parity, stop_bits); } // io status register READ8_MEMBER( px4_state::iostr_r ) { uint8_t data = 0; // centronics status data |= m_centronics_busy << 0; data |= m_centronics_perror << 1; // sio status data |= !m_sio_pin << 2; // serial data data |= m_serial_rx << 3; // rs232 status data |= !m_rs232_dcd << 4; data |= !m_rs232_cts << 5; data |= 1 << 6; // bit 6, csel, cartridge option select signal data |= 0 << 7; // bit 7, caud - audio input from cartridge if (0) logerror("%s: iostr_r: rx = %d, dcd = %d, cts = %d\n", machine().describe_context(), BIT(data, 3), BIT(data, 4), BIT(data, 5)); return data; } // art command register WRITE8_MEMBER( px4_state::artcr_w ) { if (VERBOSE) logerror("%s: artcr_w (0x%02x)\n", machine().describe_context(), data); m_artcr = data; // error reset if (BIT(data, 4)) m_artsr &= ~(ART_PE | ART_OE | ART_FE); // rs232 m_rs232->write_dtr(!BIT(data, 1)); m_rs232->write_rts(!BIT(data, 5)); } // switch register WRITE8_MEMBER( px4_state::swr_w ) { if (VERBOSE) { const char *cart_mode[] = { "hs", "io", "db", "ot" }; const char *ser_mode[] = { "cart sio / cart sio", "sio / sio", "rs232 / rs232", "rs232 / sio" }; logerror("%s: px4_swr_w: cartridge mode: %s, serial mode: %s, audio: %s\n", machine().describe_context(), cart_mode[data & 0x03], ser_mode[(data >> 2) & 0x03], BIT(data, 4) ? "on" : "off"); } m_swr = data; } // io control register WRITE8_MEMBER( px4_state::ioctlr_w ) { if (VERBOSE) logerror("%s: ioctlr_w (0x%02x)\n", machine().describe_context(), data); m_centronics->write_strobe(!BIT(data, 0)); m_centronics->write_init(BIT(data, 1)); m_sio->pout_w(BIT(data, 2)); // bit 3, cartridge reset output().set_value("led_0", BIT(data, 4)); // caps lock output().set_value("led_1", BIT(data, 5)); // num lock output().set_value("led_2", BIT(data, 6)); // "led 2" m_speaker->level_w(BIT(data, 7)); } //************************************************************************** // 7508 RELATED //************************************************************************** TIMER_DEVICE_CALLBACK_MEMBER( px4_state::upd7508_1sec_callback ) { // adjust interrupt status m_interrupt_status |= UPD7508_INT_ONE_SECOND; // are interrupts enabled? if (m_one_sec_int_enabled) { m_isr |= INT0_7508; gapnit_interrupt(); } // update clock m_time.set(m_time.time + 1); } INPUT_CHANGED_MEMBER( px4_state::key_callback ) { uint32_t oldvalue = oldval * field.mask(), newvalue = newval * field.mask(); uint32_t delta = oldvalue ^ newvalue; int i, scancode = 0xff, down = 0; for (i = 0; i < 32; i++) { if (delta & (1 << i)) { down = (newvalue & (1 << i)) ? 0x10 : 0x00; scancode = param * 32 + i; // control keys if ((scancode & 0xa0) == 0xa0) scancode |= down; if (VERBOSE) logerror("upd7508: key callback, key=0x%02x\n", scancode); break; } } if (down || (scancode & 0xa0) == 0xa0) { m_key_status = scancode; if (m_key_int_enabled) { if (VERBOSE) logerror("upd7508: key interrupt\n"); m_isr |= INT0_7508; gapnit_interrupt(); } } } //************************************************************************** // EXTERNAL RAM-DISK //************************************************************************** WRITE8_MEMBER( px4p_state::ramdisk_address_w ) { switch (offset) { case 0x00: m_ramdisk_address = (m_ramdisk_address & 0xffff00) | ((data & 0xff) << 0); break; case 0x01: m_ramdisk_address = (m_ramdisk_address & 0xff00ff) | ((data & 0xff) << 8); break; case 0x02: m_ramdisk_address = (m_ramdisk_address & 0x00ffff) | ((data & 0x07) << 16); break; } } READ8_MEMBER( px4p_state::ramdisk_data_r ) { uint8_t ret = 0xff; if (m_ramdisk_address < 0x20000) { // read from ram ret = m_ramdisk[m_ramdisk_address]; } else if (m_ramdisk_address < 0x40000) { // read from rom ret = m_rdsocket->read_rom(m_ramdisk_address); } m_ramdisk_address = (m_ramdisk_address & 0xffff00) | ((m_ramdisk_address & 0xff) + 1); return ret; } WRITE8_MEMBER( px4p_state::ramdisk_data_w ) { if (m_ramdisk_address < 0x20000) m_ramdisk[m_ramdisk_address] = data; m_ramdisk_address = (m_ramdisk_address & 0xffff00) | ((m_ramdisk_address & 0xff) + 1); } READ8_MEMBER( px4p_state::ramdisk_control_r ) { // bit 7 determines the presence of a ram-disk return 0x7f; } //************************************************************************** // VIDEO EMULATION //************************************************************************** uint32_t px4_state::screen_update_px4(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { // display enabled? if (BIT(m_yoff, 7)) { int y, x; // get vram start address uint8_t *vram = &m_ram->pointer()[(m_vadr & 0xf8) << 8]; for (y = 0; y < 64; y++) { // adjust against y-offset uint8_t row = (y - (m_yoff & 0x3f)) & 0x3f; for (x = 0; x < 240/8; x++) { bitmap.pix16(row, x * 8 + 0) = BIT(*vram, 7); bitmap.pix16(row, x * 8 + 1) = BIT(*vram, 6); bitmap.pix16(row, x * 8 + 2) = BIT(*vram, 5); bitmap.pix16(row, x * 8 + 3) = BIT(*vram, 4); bitmap.pix16(row, x * 8 + 4) = BIT(*vram, 3); bitmap.pix16(row, x * 8 + 5) = BIT(*vram, 2); bitmap.pix16(row, x * 8 + 6) = BIT(*vram, 1); bitmap.pix16(row, x * 8 + 7) = BIT(*vram, 0); vram++; } // skip the last 2 unused bytes vram += 2; } } else { // display is disabled, draw an empty screen bitmap.fill(0, cliprect); } return 0; } //************************************************************************** // DRIVER INIT //************************************************************************** void px4_state::init_px4() { // map os rom and last half of memory membank("bank1")->set_base(memregion("os")->base()); membank("bank2")->set_base(m_ram->pointer() + 0x8000); } void px4p_state::init_px4p() { init_px4(); // reserve memory for external ram-disk m_ramdisk = std::make_unique(0x20000); } void px4_state::machine_start() { std::string region_tag; m_caps1_rom = memregion(region_tag.assign(m_caps1->tag()).append(GENERIC_ROM_REGION_TAG).c_str()); m_caps2_rom = memregion(region_tag.assign(m_caps2->tag()).append(GENERIC_ROM_REGION_TAG).c_str()); m_nvram->set_base(m_ram->pointer(), 0x10000); // initialize clock machine().base_datetime(m_time); } void px4_state::machine_reset() { m_artsr = ART_TXRDY | ART_TXEMPTY | (!m_rs232->dsr_r() << 7); receive_register_reset(); transmit_register_reset(); } void px4p_state::machine_start() { px4_state::machine_start(); m_rdnvram->set_base(m_ramdisk.get(), 0x20000); } //************************************************************************** // ADDRESS MAPS //************************************************************************** void px4_state::px4_mem(address_map &map) { map(0x0000, 0x7fff).bankr("bank1"); map(0x8000, 0xffff).bankrw("bank2"); } void px4_state::px4_io(address_map &map) { map.unmap_value_high(); map.global_mask(0xff); // gapnit, 0x00-0x07 map(0x00, 0x00).rw(FUNC(px4_state::icrlc_r), FUNC(px4_state::ctrl1_w)); map(0x01, 0x01).rw(FUNC(px4_state::icrhc_r), FUNC(px4_state::cmdr_w)); map(0x02, 0x02).rw(FUNC(px4_state::icrlb_r), FUNC(px4_state::ctrl2_w)); map(0x03, 0x03).r(FUNC(px4_state::icrhb_r)); map(0x04, 0x04).rw(FUNC(px4_state::isr_r), FUNC(px4_state::ier_w)); map(0x05, 0x05).rw(FUNC(px4_state::str_r), FUNC(px4_state::bankr_w)); map(0x06, 0x06).rw(FUNC(px4_state::sior_r), FUNC(px4_state::sior_w)); map(0x07, 0x07).noprw(); // gapndl, 0x08-0x0f map(0x08, 0x08).w(FUNC(px4_state::vadr_w)); map(0x09, 0x09).w(FUNC(px4_state::yoff_w)); map(0x0a, 0x0a).w(FUNC(px4_state::fr_w)); map(0x0b, 0x0b).w(FUNC(px4_state::spur_w)); map(0x0c, 0x0f).noprw(); // gapnio, 0x10-0x1f map(0x10, 0x13).rw(FUNC(px4_state::ctgif_r), FUNC(px4_state::ctgif_w)); map(0x14, 0x14).rw(FUNC(px4_state::artdir_r), FUNC(px4_state::artdor_w)); map(0x15, 0x15).rw(FUNC(px4_state::artsr_r), FUNC(px4_state::artmr_w)); map(0x16, 0x16).rw(FUNC(px4_state::iostr_r), FUNC(px4_state::artcr_w)); map(0x17, 0x17).w("cent_data_out", FUNC(output_latch_device::bus_w)); map(0x18, 0x18).w(FUNC(px4_state::swr_w)); map(0x19, 0x19).w(FUNC(px4_state::ioctlr_w)); map(0x1a, 0x1f).noprw(); } void px4p_state::px4p_io(address_map &map) { px4_io(map); map(0x90, 0x92).w(FUNC(px4p_state::ramdisk_address_w)); map(0x93, 0x93).rw(FUNC(px4p_state::ramdisk_data_r), FUNC(px4p_state::ramdisk_data_w)); map(0x94, 0x94).r(FUNC(px4p_state::ramdisk_control_r)); } //************************************************************************** // INPUT PORTS //************************************************************************** /* The PX-4 has an exchangeable keyboard. Available is a standard ASCII * keyboard and an "item" keyboard, as well as regional variants for * UK, France, Germany, Denmark, Sweden, Norway, Italy and Spain. */ // configuration dip switch found on the rom capsule board static INPUT_PORTS_START( px4_dips ) PORT_START("dips") PORT_DIPNAME(0x0f, 0x0f, "Character set") PORT_DIPLOCATION("PX-4:8,7,6,5") PORT_DIPSETTING(0x0f, "ASCII") PORT_DIPSETTING(0x0e, "France") PORT_DIPSETTING(0x0d, "Germany") PORT_DIPSETTING(0x0c, "England") PORT_DIPSETTING(0x0b, "Denmark") PORT_DIPSETTING(0x0a, "Sweden") PORT_DIPSETTING(0x09, "Italy") PORT_DIPSETTING(0x08, "Spain") PORT_DIPSETTING(0x07, DEF_STR(Japan)) PORT_DIPSETTING(0x06, "Norway") PORT_DIPNAME(0x30, 0x30, "LST device") PORT_DIPLOCATION("PX-4:4,3") PORT_DIPSETTING(0x00, "SIO") PORT_DIPSETTING(0x10, "Cartridge printer") PORT_DIPSETTING(0x20, "RS-232C") PORT_DIPSETTING(0x30, "Centronics printer") // available for user applications PORT_DIPNAME(0x40, 0x40, "Not used") PORT_DIPLOCATION("PX-4:2") PORT_DIPSETTING(0x40, "Enable") PORT_DIPSETTING(0x00, "Disable") // this is automatically selected by the os, the switch has no effect PORT_DIPNAME(0x80, 0x00, "Keyboard type") PORT_DIPLOCATION("PX-4:1") PORT_DIPSETTING(0x80, "Item keyboard") PORT_DIPSETTING(0x00, "Standard keyboard") INPUT_PORTS_END // US ASCII keyboard static INPUT_PORTS_START( px4_h450a ) PORT_INCLUDE(px4_dips) PORT_START("keyboard_0") PORT_BIT(0x00000001, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 0) PORT_CODE(KEYCODE_F1) PORT_CHAR(UCHAR_MAMEKEY(ESC)) // 00 PORT_BIT(0x00000002, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 0) PORT_CODE(KEYCODE_F2) PORT_CHAR(UCHAR_MAMEKEY(PAUSE)) // 01 PORT_BIT(0x00000004, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 0) PORT_CODE(KEYCODE_F3) PORT_CHAR(UCHAR_MAMEKEY(F6)) PORT_NAME("Help") // 02 PORT_BIT(0x00000008, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 0) PORT_CODE(KEYCODE_F4) PORT_CHAR(UCHAR_MAMEKEY(F1)) PORT_NAME("PF1") // 03 PORT_BIT(0x00000010, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 0) PORT_CODE(KEYCODE_F5) PORT_CHAR(UCHAR_MAMEKEY(F2)) PORT_NAME("PF2") // 04 PORT_BIT(0x00000020, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 0) PORT_CODE(KEYCODE_F6) PORT_CHAR(UCHAR_MAMEKEY(F3)) PORT_NAME("PF3") // 05 PORT_BIT(0x00000040, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 0) PORT_CODE(KEYCODE_F7) PORT_CHAR(UCHAR_MAMEKEY(F4)) PORT_NAME("PF4") // 06 PORT_BIT(0x00000080, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 0) PORT_CODE(KEYCODE_F8) PORT_CHAR(UCHAR_MAMEKEY(F5)) PORT_NAME("PF5") // 07 PORT_BIT(0x0000ff00, IP_ACTIVE_HIGH, IPT_UNUSED) // 08-0f PORT_BIT(0x00010000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 0) PORT_CODE(KEYCODE_ESC) PORT_CHAR(UCHAR_MAMEKEY(CANCEL)) PORT_NAME("Stop") // 10 PORT_BIT(0x00020000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 0) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!') // 11 PORT_BIT(0x00040000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 0) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('"') // 12 PORT_BIT(0x00080000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 0) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#') // 13 PORT_BIT(0x00100000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 0) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$') // 14 PORT_BIT(0x00200000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 0) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%') // 15 PORT_BIT(0x00400000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 0) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&') // 16 PORT_BIT(0x00800000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 0) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('\'') // 17 PORT_BIT(0xff000000, IP_ACTIVE_HIGH, IPT_UNUSED) // 18-1f PORT_START("keyboard_1") PORT_BIT(0x00000001, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 1) PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q') // 20 PORT_BIT(0x00000002, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 1) PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W') // 21 PORT_BIT(0x00000004, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 1) PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E') // 22 PORT_BIT(0x00000008, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 1) PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R') // 23 PORT_BIT(0x00000010, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 1) PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T') // 24 PORT_BIT(0x00000020, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 1) PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y') // 25 PORT_BIT(0x00000040, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 1) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U') // 26 PORT_BIT(0x00000080, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 1) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I') // 27 PORT_BIT(0x0000ff00, IP_ACTIVE_HIGH, IPT_UNUSED) // 28-2f PORT_BIT(0x00010000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 1) PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D') // 30 PORT_BIT(0x00020000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 1) PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F') // 31 PORT_BIT(0x00040000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 1) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G') // 32 PORT_BIT(0x00080000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 1) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H') // 33 PORT_BIT(0x00100000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 1) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J') // 34 PORT_BIT(0x00200000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 1) PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K') // 35 PORT_BIT(0x00400000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 1) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L') // 36 PORT_BIT(0x00800000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 1) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR('+') // 37 PORT_BIT(0xff000000, IP_ACTIVE_HIGH, IPT_UNUSED) // 38-3f PORT_START("keyboard_2") PORT_BIT(0x00000001, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 2) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B') // 40 PORT_BIT(0x00000002, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 2) PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N') // 41 PORT_BIT(0x00000004, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 2) PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M') // 42 PORT_BIT(0x00000008, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 2) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<') // 43 PORT_BIT(0x00000010, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 2) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>') // 44 PORT_BIT(0x00000020, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 2) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?') // 45 PORT_BIT(0x00000040, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 2) PORT_CODE(KEYCODE_F9) PORT_CHAR('[') PORT_CHAR('{') // 46 PORT_BIT(0x00000080, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 2) PORT_CODE(KEYCODE_F10) PORT_CHAR(']') PORT_CHAR('}') // 47 PORT_BIT(0x0000ff00, IP_ACTIVE_HIGH, IPT_UNUSED) // 48-4f PORT_BIT(0x00010000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 2) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(') // 50 PORT_BIT(0x00020000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 2) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')') // 51 PORT_BIT(0x00040000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 2) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR('_') // 52 PORT_BIT(0x00080000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 2) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('=') // 53 PORT_BIT(0x00100000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 2) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('^') PORT_CHAR('~') // 54 PORT_BIT(0x00200000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 2) PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(UP)) // 55 PORT_BIT(0x00400000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 2) PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8) PORT_CHAR(UCHAR_MAMEKEY(HOME)) // 56 PORT_BIT(0x00800000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 2) PORT_CODE(KEYCODE_TAB) PORT_CHAR('\t') // 57 PORT_BIT(0xff000000, IP_ACTIVE_HIGH, IPT_UNUSED) // 58-5f PORT_START("keyboard_3") PORT_BIT(0x00000001, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 3) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O') // 60 PORT_BIT(0x00000002, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 3) PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P') // 61 PORT_BIT(0x00000004, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 3) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('@') PORT_CHAR(96) // 62 PORT_BIT(0x00000008, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 3) PORT_CODE(KEYCODE_LEFT) PORT_CHAR(UCHAR_MAMEKEY(LEFT)) // 63 PORT_BIT(0x00000010, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 3) PORT_CODE(KEYCODE_DOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN)) // 64 PORT_BIT(0x00000020, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 3) PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT)) // 65 PORT_BIT(0x00000040, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 3) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A') // 66 PORT_BIT(0x00000080, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 3) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S') // 67 PORT_BIT(0x0000ff00, IP_ACTIVE_HIGH, IPT_UNUSED) // 48-4f PORT_BIT(0x00010000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 3) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR(':') PORT_CHAR('*') // 70 PORT_BIT(0x00020000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 3) PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13) // 71 PORT_BIT(0x00040000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 3) PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('\\') PORT_CHAR('|') // 72 PORT_BIT(0x00080000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 3) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') // 73 PORT_BIT(0x00100000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 3) PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z') // 74 PORT_BIT(0x00200000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 3) PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X') // 75 PORT_BIT(0x00400000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 3) PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C') // 76 PORT_BIT(0x00800000, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 3) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V') // 77 PORT_BIT(0xff000000, IP_ACTIVE_HIGH, IPT_UNUSED) // 58-5f PORT_START("keyboard_4") PORT_BIT(0x00000001, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 4) PORT_CODE(KEYCODE_INSERT) PORT_CHAR(UCHAR_MAMEKEY(INSERT)) PORT_CHAR(UCHAR_MAMEKEY(PRTSCR)) // 80 PORT_BIT(0x00000002, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 4) PORT_CODE(KEYCODE_DEL) PORT_CHAR(UCHAR_MAMEKEY(DEL)) PORT_CHAR(12) // 81 PORT_BIT(0xfffffffc, IP_ACTIVE_HIGH, IPT_UNUSED) // 82-9f PORT_START("keyboard_5") PORT_BIT(0x00000003, IP_ACTIVE_HIGH, IPT_UNUSED) // a0-a1 PORT_BIT(0x00000004, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 5) PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_SHIFT_2) // a2 PORT_BIT(0x00000008, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 5) PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1) // a3 PORT_BIT(0x00000010, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 5) PORT_CODE(KEYCODE_LALT) PORT_CHAR(UCHAR_MAMEKEY(CAPSLOCK)) // a4 PORT_BIT(0x00000020, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 5) PORT_CODE(KEYCODE_RALT) PORT_NAME("Graph") // a5 PORT_BIT(0x00000040, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 5) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1) // a6 PORT_BIT(0x00000080, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CHANGED_MEMBER(DEVICE_SELF, px4_state, key_callback, 5) PORT_CODE(KEYCODE_NUMLOCK) PORT_CHAR(UCHAR_MAMEKEY(NUMLOCK)) // a7 PORT_BIT(0xffffff00, IP_ACTIVE_HIGH, IPT_UNUSED) // a8-bf /* b2-b7 are the 'make' codes for the above keys */ INPUT_PORTS_END #if 0 /* item keyboard */ static INPUT_PORTS_START( px4_h421a ) PORT_INCLUDE(px4_dips) INPUT_PORTS_END #endif //************************************************************************** // PALETTE //************************************************************************** void px4_state::px4_palette(palette_device &palette) const { palette.set_pen_color(0, rgb_t(138, 146, 148)); palette.set_pen_color(1, rgb_t(92, 83, 88)); } void px4p_state::px4p_palette(palette_device &palette) const { palette.set_pen_color(0, rgb_t(149, 157, 130)); palette.set_pen_color(1, rgb_t(92, 83, 88)); } //************************************************************************** // MACHINE DRIVERS //************************************************************************** void px4_state::px4(machine_config &config) { // basic machine hardware Z80(config, m_z80, XTAL(7'372'800) / 2); // uPD70008 m_z80->set_addrmap(AS_PROGRAM, &px4_state::px4_mem); m_z80->set_addrmap(AS_IO, &px4_state::px4_io); // video hardware screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_LCD)); screen.set_refresh_hz(72); screen.set_size(240, 64); screen.set_visarea(0, 239, 0, 63); screen.set_screen_update(FUNC(px4_state::screen_update_px4)); screen.set_palette("palette"); config.set_default_layout(layout_px4); PALETTE(config, "palette", FUNC(px4_state::px4_palette), 2); // sound hardware SPEAKER(config, "mono").front_center(); SPEAKER_SOUND(config, m_speaker).add_route(ALL_OUTPUTS, "mono", 1.0); TIMER(config, "one_sec").configure_periodic(FUNC(px4_state::upd7508_1sec_callback), attotime::from_seconds(1)); TIMER(config, "frc").configure_periodic(FUNC(px4_state::frc_tick), attotime::from_hz(XTAL(7'372'800) / 2 / 6)); // internal ram RAM(config, RAM_TAG).set_default_size("64K"); NVRAM(config, "nvram", nvram_device::DEFAULT_NONE); // centronics printer CENTRONICS(config, m_centronics, centronics_devices, "printer"); m_centronics->busy_handler().set(FUNC(px4_state::centronics_busy_w)); m_centronics->perror_handler().set(FUNC(px4_state::centronics_perror_w)); output_latch_device &latch(OUTPUT_LATCH(config, "cent_data_out")); m_centronics->set_output_latch(latch); // external cassette CASSETTE(config, m_ext_cas); m_ext_cas->set_default_state(CASSETTE_PLAY | CASSETTE_SPEAKER_ENABLED | CASSETTE_MOTOR_DISABLED); m_ext_cas->add_route(ALL_OUTPUTS, "mono", 0.05); TIMER(config, m_ext_cas_timer).configure_generic(FUNC(px4_state::ext_cassette_read)); // sio port EPSON_SIO(config, m_sio, nullptr); m_sio->rx_callback().set(FUNC(px4_state::sio_rx_w)); m_sio->pin_callback().set(FUNC(px4_state::sio_pin_w)); // rs232 port RS232_PORT(config, m_rs232, default_rs232_devices, nullptr); m_rs232->rxd_handler().set(FUNC(px4_state::rs232_rx_w)); m_rs232->dcd_handler().set(FUNC(px4_state::rs232_dcd_w)); m_rs232->dsr_handler().set(FUNC(px4_state::rs232_dsr_w)); m_rs232->cts_handler().set(FUNC(px4_state::rs232_cts_w)); // rom capsules GENERIC_CARTSLOT(config, m_caps1, generic_plain_slot, "px4_cart"); GENERIC_CARTSLOT(config, m_caps2, generic_plain_slot, "px4_cart"); // software list SOFTWARE_LIST(config, "cart_list").set_original("px4_cart"); SOFTWARE_LIST(config, "epson_cpm_list").set_original("epson_cpm"); } void px4p_state::px4p(machine_config &config) { px4(config); m_z80->set_addrmap(AS_IO, &px4p_state::px4p_io); NVRAM(config, "rdnvram", nvram_device::DEFAULT_ALL_0); subdevice("palette")->set_init(FUNC(px4p_state::px4p_palette)); GENERIC_CARTSLOT(config, m_rdsocket, generic_plain_slot, "px4_cart"); } //************************************************************************** // ROM DEFINITIONS //************************************************************************** // Note: We are missing "Kana OS V1.0" and "Kana OS V2.0" (Japanese version) ROM_START( px4 ) ROM_REGION(0x8000, "os", 0) ROM_SYSTEM_BIOS(0, "default", "PX-4 OS ROM") ROMX_LOAD("m25122aa_po_px4.10c", 0x0000, 0x8000, CRC(62d60dc6) SHA1(3d32ec79a317de7c84c378302e95f48d56505502), ROM_BIOS(0)) ROM_SYSTEM_BIOS(1, "ramtest", "PX-4/PX-8 DRAM Test Ver. 1.0") ROMX_LOAD("ramtest.10c", 0x0000, 0x8000, CRC(f8aced5f) SHA1(a5a2f398e602aa349c3636d6659dd0c7eaba07fb), ROM_BIOS(1)) ROM_REGION(0x1000, "slave", 0) ROM_LOAD("upd7508.bin", 0x0000, 0x1000, NO_DUMP) ROM_END ROM_START( px4p ) ROM_REGION(0x8000, "os", 0) ROM_SYSTEM_BIOS(0, "default", "PX-4+ OS ROM") ROMX_LOAD("b0_pxa.10c", 0x0000, 0x8000, CRC(d74b9ef5) SHA1(baceee076c12f5a16f7a26000e9bc395d021c455), ROM_BIOS(0)) ROM_SYSTEM_BIOS(1, "ramtest", "PX-4/PX-8 DRAM Test Ver. 1.0") ROMX_LOAD("ramtest.10c", 0x0000, 0x8000, CRC(f8aced5f) SHA1(a5a2f398e602aa349c3636d6659dd0c7eaba07fb), ROM_BIOS(1)) ROM_REGION(0x1000, "slave", 0) ROM_LOAD("upd7508.bin", 0x0000, 0x1000, NO_DUMP) ROM_END //************************************************************************** // GAME DRIVERS //************************************************************************** // YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS COMP( 1985, px4, 0, 0, px4, px4_h450a, px4_state, init_px4, "Epson", "PX-4", 0 ) COMP( 1985, px4p, px4, 0, px4p, px4_h450a, px4p_state, init_px4p, "Epson", "PX-4+", 0 )