// license: BSD-3-Clause // copyright-holders: Dirk Best /*************************************************************************** Sega Model 1 I/O Board (Advanced) Used by: - Wing War (R360) (837-10859) - NetMerc (837-11659) - Virtua Cop (837-11130 with 837-11131) Diagnostic LCD: It's possible to attach a small LCD to the board and enable a diagnostic mode. To try this in MAME, enable the 'Diagnostic' view, then map keys to I/O board buttons. Hold button 0 and press F3 to reset. The main screen will display 'I/O board error' but the LCD at the bottom is now active. Control it with board buttons 0 (up), 1 (down) and 2 (select). It's also possible to show some debug values while the game is running. To do this, hold board button '1' and push reset. Use buttons 0 and 1 to scroll the screen. Debug mode: You can attach a terminal to SIO channel B. Attach it to the MAME slot option 'ioboard:cn8'. You need to enable both JP3 and JP4 jumpers and hold board button 0 at startup. Default settings are 9600-8-N-1. It will output "RS". You can then enter the following commands: - DT[word1][word2]: Returns word2 bytes from location word1 - GO: ? - IN[byte1]: Return value from I/O port byte1 - LH: ? - OP[byte1][byte2]: Write value byte2 to I/O port byte1 - T: Nothing - XR: Return 26 bytes starting at location ff07 - XM[26 bytes]: Write 26 bytes to location starting at ff07 - ZP[word1][word2]: ff03=word1, ff05=word2 - VR: Return id string NMI is related to the debug mode, not hooked up. ***************************************************************************/ #include "emu.h" #include "model1io2.h" #include "cpu/z80/tmpz84c015.h" #include "machine/msm6253.h" #include "machine/315_5338a.h" #include "bus/rs232/rs232.h" #include "screen.h" //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** DEFINE_DEVICE_TYPE(SEGA_MODEL1IO2, model1io2_device, "model1io2", "Sega Model 1 I/O Board (Advanced)") //------------------------------------------------- // mem_map - z80 memory map //------------------------------------------------- void model1io2_device::mem_map(address_map &map) { map(0x0000, 0x7fff).rom(); map(0x8000, 0x800f).rw("io", FUNC(sega_315_5338a_device::read), FUNC(sega_315_5338a_device::write)); map(0x8040, 0x8040).portr("board"); map(0x8080, 0x8080).portr("dsw1"); map(0x8100, 0x810f).rw(FUNC(model1io2_device::fpga_r), FUNC(model1io2_device::fpga_w)); // map(0x8180, 0x8183).nopr(); // displayed as 4 byte values in the diagnostic screen // map(0x81a0, 0x81af).nopw(); // the (reserved) test in the diagnostic screen sets these map(0x8200, 0x8203).mirror(0x04).rw("adc", FUNC(msm6253_device::d0_r), FUNC(msm6253_device::address_w)); // map(0x8400, 0x8400) // jumps here when debug mode is set and board button 0 is not active on reset map(0xe000, 0xefff).ram(); // backup ram map(0xf000, 0xffff).ram(); } //------------------------------------------------- // input_ports - device-specific input ports //------------------------------------------------- static INPUT_PORTS_START( model1io2 ) PORT_START("board") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("Board 0") // on reset: port 4 does diagnostic menu (in debug mode: prevents jump to 8400) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("Board 1") // on reset: port 4 does parameter display PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("Board 2") // button 2 and 3 adjust the baud rate in debug PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_OTHER) PORT_NAME("Board 3") // mode when active at reset (9600, 4800, 2400, 1200) PORT_DIPNAME(0x10, 0x10, "ROM_EMU") // JP4 PORT_DIPSETTING( 0x00, DEF_STR(On)) PORT_DIPSETTING( 0x10, DEF_STR(Off)) PORT_DIPNAME(0x20, 0x20, "MODE") // JP3 PORT_DIPSETTING( 0x00, DEF_STR(On)) PORT_DIPSETTING( 0x20, DEF_STR(Off)) PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_CUSTOM) PORT_READ_LINE_DEVICE_MEMBER("eeprom", eeprom_serial_93cxx_device, do_read) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_UNUSED) // eeprom nc INPUT_PORTS_END ioport_constructor model1io2_device::device_input_ports() const { return INPUT_PORTS_NAME(model1io2); } //------------------------------------------------- // rom_region - device-specific ROM region //------------------------------------------------- ROM_START( model1io2 ) ROM_REGION(0x10000, "iocpu", 0) // Wing War (taken from R360 version, is it the same for the regular version?) ROM_SYSTEM_BIOS(0, "epr16891", "EPR-16891") ROMX_LOAD("epr-16891.6", 0x00000, 0x10000, CRC(a33f84d1) SHA1(3079397c7241c1a6f494fa310faff0989dfa04a0), ROM_BIOS(0)) // NetMerc ROM_SYSTEM_BIOS(1, "epr18021", "EPR-18021") ROMX_LOAD("epr-18021.6", 0x00000, 0x10000, CRC(5551837e) SHA1(bf5b9aad99c0f8f5e262e0855796f39119d11a97), ROM_BIOS(1)) // Virtua Cop ROM_SYSTEM_BIOS(2, "epr17181", "EPR-17181") ROMX_LOAD("epr-17181.6", 0x00000, 0x10000, CRC(1add2b82) SHA1(81892251d466f630a96af25bde652c20e47d7ede), ROM_BIOS(2)) ROM_END const tiny_rom_entry *model1io2_device::device_rom_region() const { return ROM_NAME(model1io2); } //------------------------------------------------- // device_add_mconfig - add device configuration //------------------------------------------------- MACHINE_CONFIG_START( model1io2_device::device_add_mconfig ) MCFG_DEVICE_ADD("iocpu", TMPZ84C015, 19.6608_MHz_XTAL / 2) // TMPZ84C015AF-12 MCFG_DEVICE_PROGRAM_MAP(mem_map) // SIO channel a baud rate adjusted by dsw1 1+2: 38400, 19200, 9600, 4800 MCFG_TMPZ84C015_ZC2_CB(WRITELINE("iocpu", tmpz84c015_device, rxca_w)) MCFG_DEVCB_CHAIN_OUTPUT(WRITELINE("iocpu", tmpz84c015_device, txca_w)) MCFG_TMPZ84C015_ZC3_CB(WRITELINE("iocpu", tmpz84c015_device, rxcb_w)) MCFG_DEVCB_CHAIN_OUTPUT(WRITELINE("iocpu", tmpz84c015_device, txcb_w)) MCFG_TMPZ84C015_OUT_TXDA_CB(WRITELINE("cn7", rs232_port_device, write_txd)) MCFG_TMPZ84C015_OUT_RTSA_CB(WRITELINE("cn7", rs232_port_device, write_rts)) MCFG_TMPZ84C015_OUT_DTRA_CB(WRITELINE("cn7", rs232_port_device, write_dtr)) MCFG_TMPZ84C015_OUT_TXDB_CB(WRITELINE("cn8", rs232_port_device, write_txd)) MCFG_TMPZ84C015_OUT_RTSB_CB(WRITELINE("cn8", rs232_port_device, write_rts)) MCFG_TMPZ84C015_OUT_DTRB_CB(WRITELINE("cn8", rs232_port_device, write_dtr)) MCFG_TMPZ84C015_IN_PA_CB(IOPORT("dsw2")) MCFG_TMPZ84C015_IN_PB_CB(IOPORT("dsw3")) MCFG_DEVICE_ADD("cn7", RS232_PORT, default_rs232_devices, nullptr) MCFG_RS232_RXD_HANDLER(WRITELINE("iocpu", tmpz84c015_device, rxa_w)) MCFG_RS232_CTS_HANDLER(WRITELINE("iocpu", tmpz84c015_device, ctsa_w)) MCFG_RS232_DCD_HANDLER(WRITELINE("iocpu", tmpz84c015_device, dcda_w)) MCFG_DEVICE_ADD("cn8", RS232_PORT, default_rs232_devices, nullptr) MCFG_RS232_RXD_HANDLER(WRITELINE("iocpu", tmpz84c015_device, rxb_w)) MCFG_RS232_CTS_HANDLER(WRITELINE("iocpu", tmpz84c015_device, ctsb_w)) MCFG_RS232_DCD_HANDLER(WRITELINE("iocpu", tmpz84c015_device, dcdb_w)) MCFG_DEVICE_ADD("io", SEGA_315_5338A, 32_MHz_XTAL) MCFG_315_5338A_READ_CB(READ8(*this, model1io2_device, io_r)) MCFG_315_5338A_WRITE_CB(WRITE8(*this, model1io2_device, io_w)) MCFG_315_5338A_IN_PA_CB(READ8(*this, model1io2_device, io_pa_r)) MCFG_315_5338A_IN_PB_CB(READ8(*this, model1io2_device, io_pb_r)) MCFG_315_5338A_IN_PC_CB(READ8(*this, model1io2_device, io_pc_r)) MCFG_315_5338A_OUT_PD_CB(WRITE8(*this, model1io2_device, io_pd_w)) MCFG_315_5338A_IN_PE_CB(READ8(*this, model1io2_device, io_pe_r)) MCFG_315_5338A_OUT_PE_CB(WRITE8(*this, model1io2_device, io_pe_w)) MCFG_315_5338A_OUT_PF_CB(WRITE8(*this, model1io2_device, io_pf_w)) MCFG_315_5338A_OUT_PG_CB(WRITE8(*this, model1io2_device, io_pg_w)) MCFG_DEVICE_ADD("eeprom", EEPROM_SERIAL_93C46_16BIT) // 93C45 MCFG_DEVICE_ADD("watchdog", MB3773, 0) MCFG_DEVICE_ADD("adc", MSM6253, 32_MHz_XTAL / 16 / 4) MCFG_MSM6253_IN0_ANALOG_READ(model1io2_device, analog0_r) MCFG_MSM6253_IN1_ANALOG_READ(model1io2_device, analog1_r) MCFG_MSM6253_IN2_ANALOG_READ(model1io2_device, analog2_r) MCFG_MSM6253_IN3_ANALOG_READ(model1io2_device, analog3_r) // diagnostic lcd display MCFG_SCREEN_ADD("screen", LCD) MCFG_SCREEN_REFRESH_RATE(50) MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) // not accurate MCFG_SCREEN_SIZE(6*20+1, 19) MCFG_SCREEN_VISIBLE_AREA(0, 6*20, 0, 19-1) MCFG_SCREEN_UPDATE_DEVICE("lcd", hd44780_device, screen_update) MCFG_SCREEN_PALETTE("palette") MCFG_PALETTE_ADD("palette", 3) MCFG_PALETTE_INIT_OWNER(model1io2_device, lcd) MCFG_HD44780_ADD("lcd") MCFG_HD44780_LCD_SIZE(2, 20) MCFG_HD44780_PIXEL_UPDATE_CB(model1io2_device, lcd_pixel_update) MACHINE_CONFIG_END //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // model1io2_device - constructor //------------------------------------------------- model1io2_device::model1io2_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : device_t(mconfig, SEGA_MODEL1IO2, tag, owner, clock), m_eeprom(*this, "eeprom"), m_watchdog(*this, "watchdog"), m_lcd(*this, "lcd"), m_led_comm_err(*this, "led_comm_err"), m_lightgun_ports(*this, {finder_base::DUMMY_TAG, finder_base::DUMMY_TAG, finder_base::DUMMY_TAG, finder_base::DUMMY_TAG}), m_read_cb(*this), m_write_cb(*this), m_in_cb{ {*this}, {*this}, {*this} }, m_drive_read_cb(*this), m_drive_write_cb(*this), m_an_cb{ {*this}, {*this}, {*this}, {*this}, {*this}, {*this}, {*this}, {*this} }, m_output_cb(*this), m_secondary_controls(false), m_lcd_data(0), m_fpga_counter(0) { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void model1io2_device::device_start() { // resolve callbacks m_led_comm_err.resolve(); m_read_cb.resolve_safe(0xff); m_write_cb.resolve_safe(); for (unsigned i = 0; i < 3; i++) m_in_cb[i].resolve_safe(0xff); m_drive_read_cb.resolve_safe(0xff); m_drive_write_cb.resolve_safe(); for (unsigned i = 0; i < 8; i++) m_an_cb[i].resolve_safe(0xff); m_output_cb.resolve_safe(); // register for save states save_item(NAME(m_secondary_controls)); save_item(NAME(m_lcd_data)); save_item(NAME(m_fpga_counter)); } //------------------------------------------------- // device_reset - device-specific reset //------------------------------------------------- void model1io2_device::device_reset() { m_fpga_counter = 0; } //************************************************************************** // DIAGNOSTIC LCD //************************************************************************** PALETTE_INIT_MEMBER( model1io2_device, lcd ) { palette.set_pen_color(0, rgb_t(138, 146, 148)); // background palette.set_pen_color(1, rgb_t( 92, 83, 88)); // lcd pixel on palette.set_pen_color(2, rgb_t(131, 136, 139)); // lcd pixel off } HD44780_PIXEL_UPDATE( model1io2_device::lcd_pixel_update ) { // char size is 5x8 if (x > 4 || y > 7) return; if (line < 2 && pos < 20) bitmap.pix16(1 + y + line*8 + line, 1 + pos*6 + x) = state ? 1 : 2; } //************************************************************************** // INTERFACE //************************************************************************** READ8_MEMBER( model1io2_device::io_r ) { return m_read_cb(offset); } WRITE8_MEMBER( model1io2_device::io_w ) { m_write_cb(offset, data, 0xff); } READ8_MEMBER( model1io2_device::io_pa_r ) { return m_in_cb[0](0); } READ8_MEMBER( model1io2_device::io_pb_r ) { return m_in_cb[1](0); } READ8_MEMBER( model1io2_device::io_pc_r ) { return m_in_cb[2](0); } WRITE8_MEMBER( model1io2_device::io_pd_w ) { m_output_cb(data); } READ8_MEMBER( model1io2_device::io_pe_r ) { // cn6 return m_drive_read_cb(0); } WRITE8_MEMBER( model1io2_device::io_pe_w ) { // cn6 m_lcd_data = data; m_drive_write_cb(data); } WRITE8_MEMBER( model1io2_device::io_pf_w ) { // 7------- eeprom pe // -6------ eeprom di // --5----- eeprom clk // ---4---- eeprom cs // ----3--- cn6 enabled // -----2-- cn6 lcd e // ------1- cn6 lcd rw // -------0 cn6 lcd rs m_eeprom->clk_write(BIT(data, 5) ? ASSERT_LINE : CLEAR_LINE); m_eeprom->di_write(BIT(data, 6)); m_eeprom->cs_write(BIT(data, 4) ? ASSERT_LINE : CLEAR_LINE); if (BIT(data, 3) == 0 && BIT(data, 2) == 1 && BIT(data, 1) == 0) m_lcd->write(space, BIT(data, 0), m_lcd_data); } WRITE8_MEMBER( model1io2_device::io_pg_w ) { // 7------- watchdog // -6------ control panel switch // --5----- comm_err led // ---43210 test points (0 = interrupt, 1 = sio a) m_watchdog->write_line_ck(BIT(data, 7)); m_secondary_controls = BIT(data, 6); m_led_comm_err = BIT(~data, 5); } ioport_value model1io2_device::analog0_r() { return m_secondary_controls ? m_an_cb[4](0) : m_an_cb[0](0); } ioport_value model1io2_device::analog1_r() { return m_secondary_controls ? m_an_cb[5](0) : m_an_cb[1](0); } ioport_value model1io2_device::analog2_r() { return m_secondary_controls ? m_an_cb[6](0) : m_an_cb[2](0); } ioport_value model1io2_device::analog3_r() { return m_secondary_controls ? m_an_cb[7](0) : m_an_cb[3](0); } //************************************************************************** // FGPA (Virtua Cop) //************************************************************************** READ8_MEMBER( model1io2_device::fpga_r ) { // fpga upload not finished yet? if (m_fpga_counter < 0x1400) return 0x80; // lightgun coordinates if (offset < 8) return m_lightgun_ports[offset >> 1].read_safe(0) >> (8 * (offset & 1)); // lightgun off-screen detect else if (offset == 8) { // 5 percent border size const float BORDER_SIZE = 0.05f; // calculate width depending on min/max port value const int BORDER_P1X = (m_lightgun_ports[1]->field(0x3ff)->maxval() - m_lightgun_ports[1]->field(0x3ff)->minval()) * BORDER_SIZE; const int BORDER_P1Y = (m_lightgun_ports[0]->field(0x3ff)->maxval() - m_lightgun_ports[0]->field(0x3ff)->minval()) * BORDER_SIZE; const int BORDER_P2X = (m_lightgun_ports[3]->field(0x3ff)->maxval() - m_lightgun_ports[3]->field(0x3ff)->minval()) * BORDER_SIZE; const int BORDER_P2Y = (m_lightgun_ports[2]->field(0x3ff)->maxval() - m_lightgun_ports[2]->field(0x3ff)->minval()) * BORDER_SIZE; uint8_t data = 0xfc; const uint16_t P1X = m_lightgun_ports[1].read_safe(0); const uint16_t P1Y = m_lightgun_ports[0].read_safe(0); const uint16_t P2X = m_lightgun_ports[3].read_safe(0); const uint16_t P2Y = m_lightgun_ports[2].read_safe(0); // border hit test for player 1 and 2 if (P1X <= (m_lightgun_ports[1]->field(0x3ff)->minval() + BORDER_P1X)) data |= 1; if (P1X >= (m_lightgun_ports[1]->field(0x3ff)->maxval() - BORDER_P1X)) data |= 1; if (P1Y <= (m_lightgun_ports[0]->field(0x3ff)->minval() + BORDER_P1Y)) data |= 1; if (P1Y >= (m_lightgun_ports[0]->field(0x3ff)->maxval() - BORDER_P1Y)) data |= 1; if (P2X <= (m_lightgun_ports[3]->field(0x3ff)->minval() + BORDER_P2X)) data |= 2; if (P2X >= (m_lightgun_ports[3]->field(0x3ff)->maxval() - BORDER_P2X)) data |= 2; if (P2Y <= (m_lightgun_ports[2]->field(0x3ff)->minval() + BORDER_P2Y)) data |= 2; if (P2Y >= (m_lightgun_ports[2]->field(0x3ff)->maxval() - BORDER_P2Y)) data |= 2; return data; } return 0xff; } WRITE8_MEMBER( model1io2_device::fpga_w ) { // fpga data uploaded here (vcop) m_fpga_counter++; }