// license:BSD-3-Clause // copyright-holders:Nigel Barnes /********************************************************************** Acorn Econet Interface Part No. 200,024 http://chrisacorns.computinghistory.org.uk/8bit_Upgrades/Acorn_Econet.html **********************************************************************/ #include "emu.h" #include "econet.h" //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** DEFINE_DEVICE_TYPE(ACORN_ECONET, acorn_econet_device, "acorn_econet", "Acorn Econet Interface") //------------------------------------------------- // device_add_mconfig - add device configuration //------------------------------------------------- void acorn_econet_device::device_add_mconfig(machine_config &config) { /* econet */ MC6854(config, m_adlc); m_adlc->out_txd_cb().set(m_econet, FUNC(econet_device::host_data_w)); m_adlc->out_irq_cb().set(FUNC(acorn_econet_device::bus_irq_w)); ECONET(config, m_econet); m_econet->clk_wr_callback().set(m_adlc, FUNC(mc6854_device::txc_w)); m_econet->clk_wr_callback().append(m_adlc, FUNC(mc6854_device::rxc_w)); m_econet->data_wr_callback().set(m_adlc, FUNC(mc6854_device::set_rx)); ECONET_SLOT(config, "econet254", m_econet, econet_devices).set_slot(254); } //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // acorn_econet_device - constructor //------------------------------------------------- acorn_econet_device::acorn_econet_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock) : device_t(mconfig, ACORN_ECONET, tag, owner, clock) , device_acorn_bus_interface(mconfig, *this) , m_adlc(*this, "mc6854") , m_econet(*this, "econet") { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void acorn_econet_device::device_start() { } //------------------------------------------------- // device_reset - device-specific reset //------------------------------------------------- void acorn_econet_device::device_reset() { address_space &space = m_bus->memspace(); space.install_readwrite_handler(0x1940, 0x1943, read8sm_delegate(*m_adlc, FUNC(mc6854_device::read)), write8sm_delegate(*m_adlc, FUNC(mc6854_device::write))); space.install_read_handler(0x1944, 0x1944, read8smo_delegate(*this, FUNC(acorn_econet_device::statid_r))); } //************************************************************************** // IMPLEMENTATION //************************************************************************** uint8_t acorn_econet_device::statid_r() { return 0xfe; } WRITE_LINE_MEMBER(acorn_econet_device::bus_irq_w) { m_bus->irq_w(state); }