/*************************************************************************** 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 "cpu/z80/z80.h" #include "machine/ram.h" #include "machine/epson_sio.h" #include "machine/ctronics.h" #include "imagedev/cartslot.h" #include "imagedev/cassette.h" #include "machine/ram.h" #include "machine/nvram.h" #include "sound/speaker.h" #include "machine/serial.h" #include "px4.lh" //************************************************************************** // CONSTANTS //************************************************************************** #define VERBOSE 1 // interrupt sources #define INT0_7508 0x01 #define INT1_ART 0x02 #define INT2_ICF 0x04 #define INT3_OVF 0x08 #define INT4_EXT 0x10 // 7508 interrupt sources #define UPD7508_INT_ALARM 0x02 #define UPD7508_INT_POWER_FAIL 0x04 #define UPD7508_INT_7508_RESET 0x08 #define UPD7508_INT_Z80_RESET 0x10 #define UPD7508_INT_ONE_SECOND 0x20 // art (asynchronous receiver transmitter) #define ART_TXRDY 0x01 // output buffer empty #define ART_RXRDY 0x02 // data byte received #define ART_TXEMPTY 0x04 // transmit buffer empty #define ART_PE 0x08 // parity error #define ART_OE 0x10 // overrun error #define ART_FE 0x20 // framing error // art baud rates static const int transmit_rate[] = { 2112, 1536, 768, 384, 192, 96, 48, 24, 192, 3072, 12, 6, 1152 }; static const int receive_rate[] = { 2112, 1536, 768, 384, 192, 96, 48, 24, 3072, 192, 12, 6, 1152 }; //************************************************************************** // MACROS //************************************************************************** #define ART_TX_ENABLED (BIT(m_artcr, 0)) #define ART_RX_ENABLED (BIT(m_artcr, 2)) #define ART_DATA (BIT(m_artmr, 2)) // number of data bits, 7 or 8 #define ART_PEN (BIT(m_artmr, 4)) // parity enabled #define ART_EVEN (BIT(m_artmr, 5)) // even or odd parity #define ART_STOP (BIT(m_artmr, 7)) // number of stop bits, 1 or 2 //************************************************************************** // TYPE DEFINITIONS //************************************************************************** class px4_state : public driver_device { public: px4_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), m_z80(*this, "maincpu"), m_ram(*this, RAM_TAG), m_centronics(*this, "centronics"), m_ext_cas(*this, "extcas"), m_speaker(*this, "speaker"), m_sio(*this, "sio"), m_rs232(*this, "rs232") , m_maincpu(*this, "maincpu") { } // internal devices required_device m_z80; required_device m_ram; required_device m_centronics; required_device m_ext_cas; required_device m_speaker; required_device m_sio; required_device m_rs232; /* gapnit register */ UINT8 m_ctrl1; UINT16 m_icrb; UINT8 m_bankr; UINT8 m_isr; UINT8 m_ier; UINT8 m_str; UINT8 m_sior; /* gapnit internal */ UINT16 m_frc_value; UINT16 m_frc_latch; /* gapndi register */ UINT8 m_vadr; UINT8 m_yoff; void gapnit_interrupt(); /* gapnio */ emu_timer *m_receive_timer; emu_timer *m_transmit_timer; UINT8 m_artdir; UINT8 m_artdor; UINT8 m_artsr; UINT8 m_artmr; UINT8 m_artcr; UINT8 m_swr; int rxd_r(); void txd_w(int data); /* 7508 internal */ bool m_one_sec_int_enabled; bool m_alarm_int_enabled; bool m_key_int_enabled; UINT8 m_key_status; UINT8 m_interrupt_status; /* external ramdisk */ offs_t m_ramdisk_address; UINT8 *m_ramdisk; /* external cassette/barcode reader */ emu_timer *m_ext_cas_timer; int m_ear_last_state; void install_rom_capsule(address_space &space, int size, const char *region); DECLARE_READ8_MEMBER(px4_icrlc_r); DECLARE_WRITE8_MEMBER(px4_ctrl1_w); DECLARE_READ8_MEMBER(px4_icrhc_r); DECLARE_WRITE8_MEMBER(px4_cmdr_w); DECLARE_READ8_MEMBER(px4_icrlb_r); DECLARE_WRITE8_MEMBER(px4_ctrl2_w); DECLARE_READ8_MEMBER(px4_icrhb_r); DECLARE_READ8_MEMBER(px4_isr_r); DECLARE_WRITE8_MEMBER(px4_ier_w); DECLARE_READ8_MEMBER(px4_str_r); DECLARE_WRITE8_MEMBER(px4_bankr_w); DECLARE_READ8_MEMBER(px4_sior_r); DECLARE_WRITE8_MEMBER(px4_sior_w); DECLARE_WRITE8_MEMBER(px4_vadr_w); DECLARE_WRITE8_MEMBER(px4_yoff_w); DECLARE_WRITE8_MEMBER(px4_fr_w); DECLARE_WRITE8_MEMBER(px4_spur_w); DECLARE_READ8_MEMBER(px4_ctgif_r); DECLARE_WRITE8_MEMBER(px4_ctgif_w); DECLARE_READ8_MEMBER(px4_artdir_r); DECLARE_WRITE8_MEMBER(px4_artdor_w); DECLARE_READ8_MEMBER(px4_artsr_r); DECLARE_WRITE8_MEMBER(px4_artmr_w); DECLARE_READ8_MEMBER(px4_iostr_r); DECLARE_WRITE8_MEMBER(px4_artcr_w); DECLARE_WRITE8_MEMBER(px4_swr_w); DECLARE_WRITE8_MEMBER(px4_ioctlr_w); DECLARE_WRITE8_MEMBER(px4_ramdisk_address_w); DECLARE_READ8_MEMBER(px4_ramdisk_data_r); DECLARE_WRITE8_MEMBER(px4_ramdisk_data_w); DECLARE_READ8_MEMBER(px4_ramdisk_control_r); DECLARE_DRIVER_INIT(px4); DECLARE_DRIVER_INIT(px4p); virtual void machine_reset(); virtual void palette_init(); DECLARE_MACHINE_START(px4_ramdisk); DECLARE_PALETTE_INIT(px4p); UINT32 screen_update_px4(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); DECLARE_INPUT_CHANGED_MEMBER(key_callback); TIMER_CALLBACK_MEMBER(ext_cassette_read); TIMER_CALLBACK_MEMBER(transmit_data); TIMER_CALLBACK_MEMBER(receive_data); TIMER_DEVICE_CALLBACK_MEMBER(frc_tick); TIMER_DEVICE_CALLBACK_MEMBER(upd7508_1sec_callback); required_device m_maincpu; }; //************************************************************************** // 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); } else if (m_ier & m_isr & INT1_ART) m_z80->set_input_line_and_vector(0, ASSERT_LINE, 0xf2); else if (m_ier & m_isr & INT2_ICF) m_z80->set_input_line_and_vector(0, ASSERT_LINE, 0xf4); else if (m_ier & m_isr & INT3_OVF) m_z80->set_input_line_and_vector(0, ASSERT_LINE, 0xf6); else if (m_ier & m_isr & INT4_EXT) m_z80->set_input_line_and_vector(0, ASSERT_LINE, 0xf8); else m_z80->set_input_line(0, CLEAR_LINE); } // external cassette or barcode reader input TIMER_CALLBACK_MEMBER(px4_state::ext_cassette_read) { UINT8 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::px4_icrlc_r) { if (VERBOSE) logerror("%s: px4_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::px4_ctrl1_w) { int baud; if (VERBOSE) logerror("%s: px4_ctrl1_w (0x%02x)\n", machine().describe_context(), data); // baudrate generator baud = data >> 4; if (baud <= 12) { m_transmit_timer->adjust(attotime::zero, 0, attotime::from_hz(XTAL_7_3728MHz/2/transmit_rate[baud])); m_receive_timer->adjust(attotime::zero, 0, attotime::from_hz(XTAL_7_3728MHz/2/receive_rate[baud])); } m_ctrl1 = data; } // input capture register high command trigger READ8_MEMBER(px4_state::px4_icrhc_r) { if (VERBOSE) logerror("%s: px4_icrhc_r\n", machine().describe_context()); return (m_frc_latch >> 8) & 0xff; } // command register WRITE8_MEMBER(px4_state::px4_cmdr_w) { if (VERBOSE) logerror("%s: px4_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::px4_icrlb_r) { if (VERBOSE) logerror("%s: px4_icrlb_r\n", machine().describe_context()); return m_icrb & 0xff; } // control register 2 WRITE8_MEMBER(px4_state::px4_ctrl2_w) { if (VERBOSE) logerror("%s: px4_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::px4_icrhb_r) { if (VERBOSE) logerror("%s: px4_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::px4_isr_r) { if (VERBOSE) logerror("%s: px4_isr_r\n", machine().describe_context()); return m_isr; } // interrupt enable register WRITE8_MEMBER(px4_state::px4_ier_w) { if (VERBOSE) logerror("%s: px4_ier_w (0x%02x)\n", machine().describe_context(), data); m_ier = data; gapnit_interrupt(); } // status register READ8_MEMBER(px4_state::px4_str_r) { UINT8 result = 0; if (VERBOSE) logerror("%s: px4_str_r\n", machine().describe_context()); result |= (m_ext_cas)->input() > 0 ? 1 : 0; result |= 1 << 1; // BCRD, barcode reader input result |= 1 << 2; // RDY signal from 7805 result |= 1 << 3; // RDYSIO, enable access to the 7805 result |= m_bankr & 0xf0; // bit 4-7, BANK - memory bank return result; } // helper function to map rom capsules void px4_state::install_rom_capsule(address_space &space, int size, const char *region) { // ram, part 1 space.install_ram(0x0000, 0xdfff - size, 0, 0, m_ram->pointer()); // actual rom data, part 1 space.install_rom(0xe000 - size, 0xffff, 0, 0, memregion(region)->base() + (size - 0x2000)); // rom data, part 2 if (size != 0x2000) { space.install_rom(0x10000 - size, 0xdfff, 0, 0, memregion(region)->base()); } // ram, continued space.install_ram(0xe000, 0xffff, 0, 0, m_ram->pointer() + 0xe000); } // bank register WRITE8_MEMBER(px4_state::px4_bankr_w) { address_space &space_program = m_z80->space(AS_PROGRAM); if (VERBOSE) logerror("%s: px4_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, 0, 0, memregion("os")->base()); space_program.install_ram(0x8000, 0xffff, 0, 0, m_ram->pointer() + 0x8000); break; case 0x04: // memory space_program.install_ram(0x0000, 0xffff, 0, 0, m_ram->pointer()); break; case 0x08: install_rom_capsule(space_program, 0x2000, "capsule1"); break; case 0x09: install_rom_capsule(space_program, 0x4000, "capsule1"); break; case 0x0a: install_rom_capsule(space_program, 0x8000, "capsule1"); break; case 0x0c: install_rom_capsule(space_program, 0x2000, "capsule2"); break; case 0x0d: install_rom_capsule(space_program, 0x4000, "capsule2"); break; case 0x0e: install_rom_capsule(space_program, 0x8000, "capsule2"); break; default: if (VERBOSE) logerror("invalid bank switch value: 0x%02x\n", data >> 4); break; } } // serial io register READ8_MEMBER(px4_state::px4_sior_r) { if (VERBOSE) logerror("%s: px4_sior_r 0x%02x\n", machine().describe_context(), m_sior); return m_sior; } // serial io register WRITE8_MEMBER(px4_state::px4_sior_w) { if (VERBOSE) logerror("%s: px4_sior_w (0x%02x)\n", machine().describe_context(), data); 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"); break; case 0x17: if (VERBOSE) logerror("7508 cmd: Clock Write\n"); 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::px4_vadr_w) { if (VERBOSE) logerror("%s: px4_vadr_w (0x%02x)\n", machine().describe_context(), data); m_vadr = data; } // y offset register WRITE8_MEMBER(px4_state::px4_yoff_w) { if (VERBOSE) logerror("%s: px4_yoff_w (0x%02x)\n", machine().describe_context(), data); m_yoff = data; } // frame register WRITE8_MEMBER(px4_state::px4_fr_w) { if (VERBOSE) logerror("%s: px4_fr_w (0x%02x)\n", machine().describe_context(), data); } // speed-up register WRITE8_MEMBER(px4_state::px4_spur_w) { if (VERBOSE) logerror("%s: px4_spur_w (0x%02x)\n", machine().describe_context(), data); } //************************************************************************** // GAPNIO //************************************************************************** // helper function to read from selected serial port int px4_state::rxd_r() { if (BIT(m_swr, 3)) // from rs232 return m_rs232->rx(); else if (BIT(m_swr, 2)) // from sio return m_sio->rx_r(); else // from cartridge return 0; } // helper function to write to selected serial port void px4_state::txd_w(int data) { if (BIT(m_swr, 2)) // from sio m_sio->tx_w(data); else if (BIT(m_swr, 3)) // from rs232 m_rs232->tx(data); // else from cartridge } TIMER_CALLBACK_MEMBER(px4_state::transmit_data) { if (ART_TX_ENABLED) { } } TIMER_CALLBACK_MEMBER(px4_state::receive_data) { if (ART_RX_ENABLED) { } } // cartridge interface READ8_MEMBER(px4_state::px4_ctgif_r) { if (VERBOSE) logerror("%s: px4_ctgif_r @ 0x%02x\n", machine().describe_context(), offset); return 0xff; } // cartridge interface WRITE8_MEMBER(px4_state::px4_ctgif_w) { if (VERBOSE) logerror("%s: px4_ctgif_w (0x%02x @ 0x%02x)\n", machine().describe_context(), data, offset); } // art data input register READ8_MEMBER(px4_state::px4_artdir_r) { if (VERBOSE) logerror("%s: px4_artdir_r\n", machine().describe_context()); // clear ready m_artsr &= ~ART_RXRDY; return m_artdir; } // art data output register WRITE8_MEMBER(px4_state::px4_artdor_w) { if (VERBOSE) logerror("%s: px4_artdor_w (0x%02x)\n", machine().describe_context(), data); // clear ready m_artsr &= ~ART_TXRDY; m_artdor = data; } // art status register READ8_MEMBER(px4_state::px4_artsr_r) { UINT8 result = 0; if (VERBOSE) logerror("%s: px4_artsr_r\n", machine().describe_context()); result |= m_rs232->dsr_r() << 7; return result | m_artsr; } // art mode register WRITE8_MEMBER(px4_state::px4_artmr_w) { if (VERBOSE) logerror("%s: px4_artmr_w (0x%02x)\n", machine().describe_context(), data); m_artmr = data; } // io status register READ8_MEMBER(px4_state::px4_iostr_r) { UINT8 result = 0; if (VERBOSE) logerror("%s: px4_iostr_r\n", machine().describe_context()); // centronics status result |= m_centronics->busy_r() << 0; result |= !m_centronics->pe_r() << 1; // sio status result |= !m_sio->pin_r() << 2; // serial data result |= rxd_r() << 3; // rs232 status result |= m_rs232->dcd_r() << 4; result |= m_rs232->cts_r() << 5; result |= 1 << 6; // bit 6, csel, cartridge option select signal, set to 'other mode' result |= 0 << 7; // bit 7, caud - audio input from cartridge return result; } // art command register WRITE8_MEMBER(px4_state::px4_artcr_w) { if (VERBOSE) logerror("%s: px4_artcr_w (0x%02x)\n", machine().describe_context(), data); m_artcr = data; // bit 0, txe - transmit enable if (!ART_TX_ENABLED) txd_w(1); // force high when disabled // bit 3, sbrk - break output if (ART_TX_ENABLED && BIT(data, 3)) txd_w(0); // force low when enabled and transmit enabled // error reset if (BIT(data, 4)) m_artsr &= ~(ART_PE | ART_OE | ART_FE); // rs232 m_rs232->dtr_w(BIT(data, 1)); m_rs232->rts_w(BIT(data, 5)); } // switch register WRITE8_MEMBER(px4_state::px4_swr_w) { if (VERBOSE) logerror("%s: px4_swr_w (0x%02x)\n", machine().describe_context(), data); m_swr = data; } // io control register WRITE8_MEMBER(px4_state::px4_ioctlr_w) { if (VERBOSE) logerror("%s: px4_ioctlr_w (0x%02x)\n", machine().describe_context(), data); m_centronics->strobe_w(!BIT(data, 0)); m_centronics->init_prime_w(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" speaker_level_w(m_speaker, 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(); } } INPUT_CHANGED_MEMBER(px4_state::key_callback) { UINT32 oldvalue = oldval * field.mask(), newvalue = newval * field.mask(); UINT32 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 = (FPTR)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(px4_state::px4_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(px4_state::px4_ramdisk_data_r) { UINT8 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 = memregion("ramdisk")->base()[m_ramdisk_address]; } m_ramdisk_address = (m_ramdisk_address & 0xffff00) | ((m_ramdisk_address & 0xff) + 1); return ret; } WRITE8_MEMBER(px4_state::px4_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(px4_state::px4_ramdisk_control_r) { // bit 7 determines the presence of a ram-disk return 0x7f; } //************************************************************************** // VIDEO EMULATION //************************************************************************** UINT32 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 *vram = &m_ram->pointer()[(m_vadr & 0xf8) << 8]; for (y = 0; y < 64; y++) { // adjust against y-offset UINT8 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 //************************************************************************** DRIVER_INIT_MEMBER(px4_state,px4) { // init 7508 m_one_sec_int_enabled = true; m_key_int_enabled = true; m_alarm_int_enabled = true; // art m_receive_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(px4_state::receive_data), this)); m_transmit_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(px4_state::transmit_data), this)); // external cassette or barcode reader m_ext_cas_timer = machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(px4_state::ext_cassette_read), this)); m_ear_last_state = 0; // map os rom and last half of memory membank("bank1")->set_base(memregion("os")->base()); membank("bank2")->set_base(m_ram->pointer() + 0x8000); } DRIVER_INIT_MEMBER(px4_state, px4p) { DRIVER_INIT_CALL(px4); // reserve memory for external ram-disk m_ramdisk = auto_alloc_array(machine(), UINT8, 0x20000); } void px4_state::machine_reset() { m_artsr = ART_TXRDY | ART_TXEMPTY; } MACHINE_START_MEMBER(px4_state, px4_ramdisk) { machine().device("nvram")->set_base(m_ramdisk, 0x20000); } //************************************************************************** // ADDRESS MAPS //************************************************************************** static ADDRESS_MAP_START( px4_mem, AS_PROGRAM, 8, px4_state ) AM_RANGE(0x0000, 0x7fff) AM_ROMBANK("bank1") AM_RANGE(0x8000, 0xffff) AM_RAMBANK("bank2") ADDRESS_MAP_END static ADDRESS_MAP_START( px4_io, AS_IO, 8, px4_state ) ADDRESS_MAP_UNMAP_HIGH ADDRESS_MAP_GLOBAL_MASK(0xff) // gapnit, 0x00-0x07 AM_RANGE(0x00, 0x00) AM_READWRITE(px4_icrlc_r, px4_ctrl1_w) AM_RANGE(0x01, 0x01) AM_READWRITE(px4_icrhc_r, px4_cmdr_w) AM_RANGE(0x02, 0x02) AM_READWRITE(px4_icrlb_r, px4_ctrl2_w) AM_RANGE(0x03, 0x03) AM_READ(px4_icrhb_r) AM_RANGE(0x04, 0x04) AM_READWRITE(px4_isr_r, px4_ier_w) AM_RANGE(0x05, 0x05) AM_READWRITE(px4_str_r, px4_bankr_w) AM_RANGE(0x06, 0x06) AM_READWRITE(px4_sior_r, px4_sior_w) AM_RANGE(0x07, 0x07) AM_NOP // gapndl, 0x08-0x0f AM_RANGE(0x08, 0x08) AM_WRITE(px4_vadr_w) AM_RANGE(0x09, 0x09) AM_WRITE(px4_yoff_w) AM_RANGE(0x0a, 0x0a) AM_WRITE(px4_fr_w) AM_RANGE(0x0b, 0x0b) AM_WRITE(px4_spur_w) AM_RANGE(0x0c, 0x0f) AM_NOP // gapnio, 0x10-0x1f AM_RANGE(0x10, 0x13) AM_READWRITE(px4_ctgif_r, px4_ctgif_w) AM_RANGE(0x14, 0x14) AM_READWRITE(px4_artdir_r, px4_artdor_w) AM_RANGE(0x15, 0x15) AM_READWRITE(px4_artsr_r, px4_artmr_w) AM_RANGE(0x16, 0x16) AM_READWRITE(px4_iostr_r, px4_artcr_w) AM_RANGE(0x17, 0x17) AM_DEVWRITE("centronics", centronics_device, write) AM_RANGE(0x18, 0x18) AM_WRITE(px4_swr_w) AM_RANGE(0x19, 0x19) AM_WRITE(px4_ioctlr_w) AM_RANGE(0x1a, 0x1f) AM_NOP ADDRESS_MAP_END static ADDRESS_MAP_START( px4p_io, AS_IO, 8, px4_state ) AM_IMPORT_FROM(px4_io) AM_RANGE(0x90, 0x92) AM_WRITE(px4_ramdisk_address_w) AM_RANGE(0x93, 0x93) AM_READWRITE(px4_ramdisk_data_r, px4_ramdisk_data_w) AM_RANGE(0x94, 0x94) AM_READ(px4_ramdisk_control_r) ADDRESS_MAP_END //************************************************************************** // 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 DIP: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("DIP: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("DIP: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("DIP: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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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, (void *)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::palette_init() { palette_set_color(machine(), 0, MAKE_RGB(138, 146, 148)); palette_set_color(machine(), 1, MAKE_RGB(92, 83, 88)); } PALETTE_INIT_MEMBER(px4_state, px4p) { palette_set_color(machine(), 0, MAKE_RGB(149, 157, 130)); palette_set_color(machine(), 1, MAKE_RGB(92, 83, 88)); } //************************************************************************** // MACHINE DRIVERS //************************************************************************** static const rs232_port_interface rs232_intf = { DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL }; static const cassette_interface px4_cassette_interface = { cassette_default_formats, NULL, (cassette_state)(CASSETTE_PLAY | CASSETTE_SPEAKER_ENABLED | CASSETTE_MOTOR_DISABLED), NULL, NULL }; static MACHINE_CONFIG_START( px4, px4_state ) // basic machine hardware MCFG_CPU_ADD("maincpu", Z80, XTAL_7_3728MHz / 2) // uPD70008 MCFG_CPU_PROGRAM_MAP(px4_mem) MCFG_CPU_IO_MAP(px4_io) // video hardware MCFG_SCREEN_ADD("screen", LCD) MCFG_SCREEN_REFRESH_RATE(72) MCFG_SCREEN_SIZE(240, 64) MCFG_SCREEN_VISIBLE_AREA(0, 239, 0, 63) MCFG_SCREEN_UPDATE_DRIVER(px4_state, screen_update_px4) MCFG_DEFAULT_LAYOUT(layout_px4) MCFG_PALETTE_LENGTH(2) // sound hardware MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SOUND_ADD("speaker", SPEAKER_SOUND, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0) MCFG_TIMER_DRIVER_ADD_PERIODIC("one_sec", px4_state, upd7508_1sec_callback, attotime::from_seconds(1)) MCFG_TIMER_DRIVER_ADD_PERIODIC("frc", px4_state, frc_tick, attotime::from_hz(XTAL_7_3728MHz / 2 / 6)) // internal ram MCFG_RAM_ADD(RAM_TAG) MCFG_RAM_DEFAULT_SIZE("64k") // centronics printer MCFG_CENTRONICS_PRINTER_ADD("centronics", standard_centronics) // external cassette MCFG_CASSETTE_ADD("extcas", px4_cassette_interface) // sio port MCFG_EPSON_SIO_ADD("sio") // rs232 port MCFG_RS232_PORT_ADD("rs232", rs232_intf, default_rs232_devices, NULL, NULL) // rom capsules MCFG_CARTSLOT_ADD("capsule1") MCFG_CARTSLOT_EXTENSION_LIST("bin") MCFG_CARTSLOT_INTERFACE("px4_cart") MCFG_CARTSLOT_NOT_MANDATORY MCFG_CARTSLOT_ADD("capsule2") MCFG_CARTSLOT_EXTENSION_LIST("bin") MCFG_CARTSLOT_INTERFACE("px4_cart") MCFG_CARTSLOT_NOT_MANDATORY // software list MCFG_SOFTWARE_LIST_ADD("cart_list", "px4_cart") MACHINE_CONFIG_END static MACHINE_CONFIG_DERIVED( px4p, px4 ) MCFG_CPU_MODIFY("maincpu") MCFG_CPU_IO_MAP(px4p_io) MCFG_MACHINE_START_OVERRIDE(px4_state, px4_ramdisk) MCFG_NVRAM_ADD_0FILL("nvram") MCFG_PALETTE_INIT_OVERRIDE(px4_state, px4p) MCFG_CARTSLOT_ADD("ramdisk") MCFG_CARTSLOT_NOT_MANDATORY MACHINE_CONFIG_END //************************************************************************** // 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_LOAD("m25122aa_po_px4.10c", 0x0000, 0x8000, CRC(62d60dc6) SHA1(3d32ec79a317de7c84c378302e95f48d56505502)) ROM_REGION(0x1000, "slave", 0) ROM_LOAD("upd7508.bin", 0x0000, 0x1000, NO_DUMP) ROM_REGION(0x8000, "capsule1", 0) ROM_CART_LOAD("capsule1", 0x0000, 0x8000, ROM_OPTIONAL) ROM_REGION(0x8000, "capsule2", 0) ROM_CART_LOAD("capsule2", 0x0000, 0x8000, ROM_OPTIONAL) ROM_END ROM_START( px4p ) ROM_REGION(0x8000, "os", 0) ROM_LOAD("b0_pxa.10c", 0x0000, 0x8000, CRC(d74b9ef5) SHA1(baceee076c12f5a16f7a26000e9bc395d021c455)) ROM_REGION(0x1000, "slave", 0) ROM_LOAD("upd7508.bin", 0x0000, 0x1000, NO_DUMP) ROM_REGION(0x8000, "capsule1", 0) ROM_CART_LOAD("capsule1", 0x0000, 0x8000, ROM_OPTIONAL) ROM_REGION(0x8000, "capsule2", 0) ROM_CART_LOAD("capsule2", 0x0000, 0x8000, ROM_OPTIONAL) ROM_REGION(0x20000, "ramdisk", 0) ROM_CART_LOAD("ramdisk", 0x0000, 0x20000, ROM_OPTIONAL | ROM_MIRROR) 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, px4, "Epson", "PX-4", 0 ) COMP( 1985, px4p, px4, 0, px4p, px4_h450a, px4_state, px4p, "Epson", "PX-4+", 0 )