예제 #1
0
void bitgraph_state::bitgrpha(machine_config &config)
{
	M68000(config, m_maincpu, XTAL(6'900'000));
	m_maincpu->set_addrmap(AS_PROGRAM, &bitgraph_state::bitgrapha_mem);

	bg_motherboard(config);

	CLOCK(config, "system_clock", 40).signal_handler().set(FUNC(bitgraph_state::system_clock_write));

	ACIA6850(config, m_acia3, 0);
	m_acia3->txd_handler().set(RS232_M_TAG, FUNC(rs232_port_device::write_txd));
	m_acia3->rts_handler().set(RS232_M_TAG, FUNC(rs232_port_device::write_rts));
	m_acia3->irq_handler().set_inputline(M68K_TAG, M68K_IRQ_1);

	rs232_port_device &rs232m(RS232_PORT(config, RS232_M_TAG, default_rs232_devices, nullptr));
	rs232m.rxd_handler().set(m_acia3, FUNC(acia6850_device::write_rxd));
	rs232m.dcd_handler().set(m_acia3, FUNC(acia6850_device::write_dcd));
	rs232m.cts_handler().set(m_acia3, FUNC(acia6850_device::write_cts));

	RAM(config, RAM_TAG).set_default_size("128K");
}