// license:BSD-3-Clause // copyright-holders:Nigel Barnes /********************************************************************** Atomwide Serial Expansion Card http://chrisacorns.computinghistory.org.uk/32bit_UpgradesA2G/Atomwide_SerialExp.html **********************************************************************/ #include "emu.h" #include "serial.h" #include "machine/ins8250.h" #include "bus/rs232/rs232.h" namespace { // ======================> arc_serial_device class arc_serial_device : public device_t, public device_archimedes_podule_interface { public: // construction/destruction arc_serial_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock); protected: // device-level overrides virtual void device_start() override; virtual void device_reset() override; // optional information overrides virtual void device_add_mconfig(machine_config &config) override; virtual const tiny_rom_entry *device_rom_region() const override; // device_archimedes_podule_interface overrides virtual void ioc_map(address_map &map) override; private: required_memory_region m_podule_rom; u8 m_rom_page; }; void arc_serial_device::ioc_map(address_map &map) { map(0x0000, 0x1fff).lr8(NAME([this](offs_t offset) { return m_podule_rom->base()[offset | ((m_rom_page << 11) & 0xf800)]; })).umask32(0x000000ff); map(0x2000, 0x201f).rw("uart2", FUNC(ns16550_device::ins8250_r), FUNC(ns16550_device::ins8250_w)).umask32(0x000000ff); map(0x2400, 0x241f).rw("uart1", FUNC(ns16550_device::ins8250_r), FUNC(ns16550_device::ins8250_w)).umask32(0x000000ff); map(0x2800, 0x281f).rw("uart0", FUNC(ns16550_device::ins8250_r), FUNC(ns16550_device::ins8250_w)).umask32(0x000000ff); map(0x3c00, 0x3c00).lw8(NAME([this](u8 data) { m_rom_page = data; })); } //------------------------------------------------- // ROM( serial ) //------------------------------------------------- ROM_START( serial ) ROM_REGION(0x10000, "podule_rom", 0) ROM_LOAD("atomwide_serial.rom", 0x0000, 0x10000, CRC(2dcf3b28) SHA1(c100cc4f5e3d87233e6db6a1da04ac7c19ac2357)) ROM_END const tiny_rom_entry *arc_serial_device::device_rom_region() const { return ROM_NAME( serial ); } //------------------------------------------------- // device_add_mconfig - add device configuration //------------------------------------------------- void arc_serial_device::device_add_mconfig(machine_config &config) { ns16550_device &uart0(NS16550(config, "uart0", 7.3728_MHz_XTAL)); uart0.out_tx_callback().set("serial0", FUNC(rs232_port_device::write_txd)); uart0.out_dtr_callback().set("serial0", FUNC(rs232_port_device::write_dtr)); uart0.out_rts_callback().set("serial0", FUNC(rs232_port_device::write_rts)); rs232_port_device &serial0(RS232_PORT(config, "serial0", default_rs232_devices, nullptr)); serial0.rxd_handler().set("uart0", FUNC(ns16550_device::rx_w)); serial0.dcd_handler().set("uart0", FUNC(ns16550_device::dcd_w)); serial0.dsr_handler().set("uart0", FUNC(ns16550_device::dsr_w)); serial0.cts_handler().set("uart0", FUNC(ns16550_device::cts_w)); ns16550_device &uart1(NS16550(config, "uart1", 7.3728_MHz_XTAL)); uart1.out_tx_callback().set("serial1", FUNC(rs232_port_device::write_txd)); uart1.out_dtr_callback().set("serial1", FUNC(rs232_port_device::write_dtr)); uart1.out_rts_callback().set("serial1", FUNC(rs232_port_device::write_rts)); rs232_port_device &serial1(RS232_PORT(config, "serial1", default_rs232_devices, nullptr)); serial1.rxd_handler().set("uart1", FUNC(ns16550_device::rx_w)); serial1.dcd_handler().set("uart1", FUNC(ns16550_device::dcd_w)); serial1.dsr_handler().set("uart1", FUNC(ns16550_device::dsr_w)); serial1.cts_handler().set("uart1", FUNC(ns16550_device::cts_w)); ns16550_device &uart2(NS16550(config, "uart2", 7.3728_MHz_XTAL)); uart2.out_tx_callback().set("serial2", FUNC(rs232_port_device::write_txd)); uart2.out_dtr_callback().set("serial2", FUNC(rs232_port_device::write_dtr)); uart2.out_rts_callback().set("serial2", FUNC(rs232_port_device::write_rts)); rs232_port_device &serial2(RS232_PORT(config, "serial2", default_rs232_devices, nullptr)); serial2.rxd_handler().set("uart2", FUNC(ns16550_device::rx_w)); serial2.dcd_handler().set("uart2", FUNC(ns16550_device::dcd_w)); serial2.dsr_handler().set("uart2", FUNC(ns16550_device::dsr_w)); serial2.cts_handler().set("uart2", FUNC(ns16550_device::cts_w)); } //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // arc_serial_device - constructor //------------------------------------------------- arc_serial_device::arc_serial_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock) : device_t(mconfig, ARC_SERIAL, tag, owner, clock) , device_archimedes_podule_interface(mconfig, *this) , m_podule_rom(*this, "podule_rom") , m_rom_page(0) { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void arc_serial_device::device_start() { save_item(NAME(m_rom_page)); } //------------------------------------------------- // device_reset - device-specific reset //------------------------------------------------- void arc_serial_device::device_reset() { m_rom_page = 0x00; } } // anonymous namespace //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** DEFINE_DEVICE_TYPE_PRIVATE(ARC_SERIAL, device_archimedes_podule_interface, arc_serial_device, "arc_serial", "Atomwide Serial Expansion Card")