// license:BSD-3-Clause // copyright-holders:Curt Coder /********************************************************************** Coleco Adam Serial/Parallel Interface emulation **********************************************************************/ #include "emu.h" #include "spi.h" //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** DEFINE_DEVICE_TYPE(ADAM_SPI, adam_spi_device, "adam_spi", "Adam SPI") //------------------------------------------------- // ROM( adam_spi ) //------------------------------------------------- ROM_START( adam_spi ) ROM_REGION( 0x800, "m6801", 0 ) ROM_LOAD( "spi.bin", 0x000, 0x800, CRC(4ba30352) SHA1(99fe5aebd505a208bea6beec5d7322b15426e9c1) ) ROM_END //------------------------------------------------- // rom_region - device-specific ROM region //------------------------------------------------- const tiny_rom_entry *adam_spi_device::device_rom_region() const { return ROM_NAME( adam_spi ); } //------------------------------------------------- // ADDRESS_MAP( adam_spi_mem ) //------------------------------------------------- void adam_spi_device::adam_spi_mem(address_map &map) { map(0x0000, 0x001f).m(m_maincpu, FUNC(m6801_cpu_device::m6801_io)); map(0x0080, 0x00ff).ram(); map(0xf800, 0xffff).rom().region("m6801", 0); } //------------------------------------------------- // device_add_mconfig - add device configuration //------------------------------------------------- void adam_spi_device::device_add_mconfig(machine_config &config) { M6801(config, m_maincpu, XTAL(4'000'000)); m_maincpu->set_addrmap(AS_PROGRAM, &adam_spi_device::adam_spi_mem); m_maincpu->in_p2_cb().set(FUNC(adam_spi_device::p2_r)); m_maincpu->out_p2_cb().set(FUNC(adam_spi_device::p2_w)); m_maincpu->set_disable(); SCN2661A(config, "epci", XTAL(4'915'200)); RS232_PORT(config, "rs232", default_rs232_devices, nullptr); centronics_device ¢ronics(CENTRONICS(config, "centronics", centronics_devices, "printer")); centronics.set_data_input_buffer("cent_data_in"); INPUT_BUFFER(config, "cent_data_in"); output_latch_device ¢_data_out(OUTPUT_LATCH(config, "cent_data_out")); centronics.set_output_latch(cent_data_out); } //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // adam_spi_device - constructor //------------------------------------------------- adam_spi_device::adam_spi_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock) : device_t(mconfig, ADAM_SPI, tag, owner, clock) , device_adamnet_card_interface(mconfig, *this) , m_maincpu(*this, "m6801") { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void adam_spi_device::device_start() { } //------------------------------------------------- // adamnet_reset_w - //------------------------------------------------- void adam_spi_device::adamnet_reset_w(int state) { m_maincpu->set_input_line(INPUT_LINE_RESET, state); } //------------------------------------------------- // p2_r - //------------------------------------------------- uint8_t adam_spi_device::p2_r() { /* bit description 0 mode bit 0 1 mode bit 1 2 mode bit 2 3 NET RXD 4 */ uint8_t data = M6801_MODE_7; // NET RXD data |= m_bus->rxd_r(this) << 3; return data; } //------------------------------------------------- // p2_w - //------------------------------------------------- void adam_spi_device::p2_w(uint8_t data) { /* bit description 0 1 2 3 4 NET TXD */ m_bus->txd_w(this, BIT(data, 4)); }