/********************************************************************** Coleco Adam serial port interface emulation Copyright MESS Team. Visit http://mamedev.org for licensing and usage restrictions. **********************************************************************/ #include "adam_spi.h" //************************************************************************** // MACROS / CONSTANTS //************************************************************************** #define M6801_TAG "m6801" //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** const device_type ADAM_SPI = &device_creator; //------------------------------------------------- // ROM( adam_spi ) //------------------------------------------------- ROM_START( adam_spi ) ROM_REGION( 0x800, M6801_TAG, 0 ) ROM_LOAD( "spi.bin", 0x000, 0x800, CRC(4ba30352) SHA1(99fe5aebd505a208bea6beec5d7322b15426e9c1) ) ROM_END //------------------------------------------------- // rom_region - device-specific ROM region //------------------------------------------------- const rom_entry *adam_spi_device::device_rom_region() const { return ROM_NAME( adam_spi ); } //------------------------------------------------- // ADDRESS_MAP( adam_spi_mem ) //------------------------------------------------- static ADDRESS_MAP_START( adam_spi_mem, AS_PROGRAM, 8, adam_spi_device ) AM_RANGE(0x0000, 0x001f) AM_READWRITE_LEGACY(m6801_io_r, m6801_io_w) AM_RANGE(0x0080, 0x00ff) AM_RAM AM_RANGE(0xf800, 0xffff) AM_ROM AM_REGION(M6801_TAG, 0) ADDRESS_MAP_END //------------------------------------------------- // ADDRESS_MAP( adam_spi_io ) //------------------------------------------------- static ADDRESS_MAP_START( adam_spi_io, AS_IO, 8, adam_spi_device ) AM_RANGE(M6801_PORT2, M6801_PORT2) AM_READWRITE(p2_r, p2_w) ADDRESS_MAP_END //------------------------------------------------- // MACHINE_DRIVER( adam_spi ) //------------------------------------------------- static MACHINE_CONFIG_FRAGMENT( adam_spi ) MCFG_CPU_ADD(M6801_TAG, M6801, XTAL_4MHz) MCFG_CPU_PROGRAM_MAP(adam_spi_mem) MCFG_CPU_IO_MAP(adam_spi_io) MCFG_DEVICE_DISABLE() MACHINE_CONFIG_END //------------------------------------------------- // machine_config_additions - device-specific // machine configurations //------------------------------------------------- machine_config_constructor adam_spi_device::device_mconfig_additions() const { return MACHINE_CONFIG_NAME( adam_spi ); } //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // adam_spi_device - constructor //------------------------------------------------- adam_spi_device::adam_spi_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : device_t(mconfig, ADAM_SPI, "Adam SPI", tag, owner, clock), device_adamnet_card_interface(mconfig, *this), m_maincpu(*this, M6801_TAG) { } //------------------------------------------------- // 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 - //------------------------------------------------- READ8_MEMBER( adam_spi_device::p2_r ) { /* bit description 0 mode bit 0 1 mode bit 1 2 mode bit 2 3 NET RXD 4 */ UINT8 data = M6801_MODE_7; // NET RXD data |= m_bus->rxd_r(this) << 3; return data; } //------------------------------------------------- // p2_w - //------------------------------------------------- WRITE8_MEMBER( adam_spi_device::p2_w ) { /* bit description 0 1 2 3 4 NET TXD */ m_bus->txd_w(this, BIT(data, 4)); }