// license:BSD-3-Clause // copyright-holders:Curt Coder /********************************************************************** TIKI-100 expansion bus emulation **********************************************************************/ #include "emu.h" #include "exp.h" //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** DEFINE_DEVICE_TYPE(TIKI100_BUS, tiki100_bus_device, "tiki100bus", "TIKI-100 expansion bus") DEFINE_DEVICE_TYPE(TIKI100_BUS_SLOT, tiki100_bus_slot_device, "tiki100bus_slot", "TIKI-100 expansion bus slot") //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // tiki100_bus_slot_device - constructor //------------------------------------------------- tiki100_bus_slot_device::tiki100_bus_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : device_t(mconfig, TIKI100_BUS_SLOT, tag, owner, clock), device_single_card_slot_interface(mconfig, *this), device_z80daisy_interface(mconfig, *this), m_bus(*this, finder_base::DUMMY_TAG), m_card(nullptr) { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void tiki100_bus_slot_device::device_start() { m_card = get_card_device(); if (m_card) m_bus->add_card(*m_card); } //------------------------------------------------- // tiki100_bus_device - constructor //------------------------------------------------- tiki100_bus_device::tiki100_bus_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : device_t(mconfig, TIKI100_BUS, tag, owner, clock), m_irq_cb(*this), m_nmi_cb(*this), m_busrq_cb(*this), m_in_mrq_cb(*this), m_out_mrq_cb(*this) { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void tiki100_bus_device::device_start() { // resolve callbacks m_irq_cb.resolve_safe(); m_nmi_cb.resolve_safe(); m_busrq_cb.resolve_safe(); m_in_mrq_cb.resolve(); m_out_mrq_cb.resolve(); } //------------------------------------------------- // add_card - add card //------------------------------------------------- void tiki100_bus_device::add_card(device_tiki100bus_card_interface &card) { m_device_list.append(card); card.m_bus = this; } //------------------------------------------------- // mrq_r - memory read //------------------------------------------------- uint8_t tiki100_bus_device::mrq_r(offs_t offset, uint8_t data, bool &mdis) { device_tiki100bus_card_interface *entry = m_device_list.first(); while (entry) { data &= entry->mrq_r(offset, data, mdis); entry = entry->next(); } return data; } //------------------------------------------------- // mrq_w - memory write //------------------------------------------------- void tiki100_bus_device::mrq_w(offs_t offset, uint8_t data) { device_tiki100bus_card_interface *entry = m_device_list.first(); while (entry) { entry->mrq_w(offset, data); entry = entry->next(); } } //------------------------------------------------- // iorq_r - I/O read //------------------------------------------------- uint8_t tiki100_bus_device::iorq_r(offs_t offset, uint8_t data) { device_tiki100bus_card_interface *entry = m_device_list.first(); while (entry) { data &= entry->iorq_r(offset, data); entry = entry->next(); } return data; } //------------------------------------------------- // iorq_w - I/O write //------------------------------------------------- void tiki100_bus_device::iorq_w(offs_t offset, uint8_t data) { device_tiki100bus_card_interface *entry = m_device_list.first(); while (entry) { entry->iorq_w(offset, data); entry = entry->next(); } } //------------------------------------------------- // busak_w - bus acknowledge write //------------------------------------------------- WRITE_LINE_MEMBER( tiki100_bus_device::busak_w ) { device_tiki100bus_card_interface *entry = m_device_list.first(); while (entry) { entry->busak_w(state); entry = entry->next(); } } //************************************************************************** // DEVICE TIKI-100 BUS CARD INTERFACE //************************************************************************** //------------------------------------------------- // device_tiki100bus_card_interface - constructor //------------------------------------------------- device_tiki100bus_card_interface::device_tiki100bus_card_interface(const machine_config &mconfig, device_t &device) : device_interface(device, "tiki100bus"), m_bus(nullptr), m_busak(CLEAR_LINE), m_next(nullptr) { m_slot = dynamic_cast(device.owner()); } void device_tiki100bus_card_interface::interface_pre_start() { if (!m_bus) throw device_missing_dependencies(); } //------------------------------------------------- // SLOT_INTERFACE( tiki100_cards ) //------------------------------------------------- // slot devices #include "8088.h" #include "hdc.h" void tiki100_cards(device_slot_interface &device) { device.option_add("8088", TIKI100_8088); device.option_add("hdc", TIKI100_HDC); }