// license:BSD-3-Clause // copyright-holders:Curt Coder /********************************************************************** S-100 (IEEE-696/1983) bus emulation Copyright MESS Team. Visit http://mamedev.org for licensing and usage restrictions. **********************************************************************/ #include "s100.h" //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** const device_type S100_BUS = &device_creator; const device_type S100_SLOT = &device_creator; //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // device_s100_card_interface - constructor //------------------------------------------------- device_s100_card_interface::device_s100_card_interface(const machine_config &mconfig, device_t &device) : device_slot_card_interface(mconfig, device) { } //------------------------------------------------- // s100_slot_t - constructor //------------------------------------------------- s100_slot_t::s100_slot_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : device_t(mconfig, S100_SLOT, "S100 slot", tag, owner, clock, "s100_slot", __FILE__), device_slot_interface(mconfig, *this) { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void s100_slot_t::device_start() { m_bus = machine().device(S100_TAG); device_s100_card_interface *dev = dynamic_cast(get_card_device()); if (dev) m_bus->add_card(dev); } //------------------------------------------------- // s100_bus_t - constructor //------------------------------------------------- s100_bus_t::s100_bus_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : device_t(mconfig, S100_BUS, "S100", tag, owner, clock, "s100", __FILE__), m_write_irq(*this), m_write_nmi(*this), m_write_vi0(*this), m_write_vi1(*this), m_write_vi2(*this), m_write_vi3(*this), m_write_vi4(*this), m_write_vi5(*this), m_write_vi6(*this), m_write_vi7(*this), m_write_dma0(*this), m_write_dma1(*this), m_write_dma2(*this), m_write_dma3(*this), m_write_rdy(*this), m_write_hold(*this), m_write_error(*this) { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void s100_bus_t::device_start() { // resolve callbacks m_write_irq.resolve_safe(); m_write_nmi.resolve_safe(); m_write_vi0.resolve_safe(); m_write_vi1.resolve_safe(); m_write_vi2.resolve_safe(); m_write_vi3.resolve_safe(); m_write_vi4.resolve_safe(); m_write_vi5.resolve_safe(); m_write_vi6.resolve_safe(); m_write_vi7.resolve_safe(); m_write_dma0.resolve_safe(); m_write_dma1.resolve_safe(); m_write_dma2.resolve_safe(); m_write_dma3.resolve_safe(); m_write_rdy.resolve_safe(); m_write_hold.resolve_safe(); m_write_error.resolve_safe(); } //------------------------------------------------- // device_reset - device-specific reset //------------------------------------------------- void s100_bus_t::device_reset() { } //------------------------------------------------- // add_card - add card //------------------------------------------------- void s100_bus_t::add_card(device_s100_card_interface *card) { card->m_bus = this; m_device_list.append(*card); } //------------------------------------------------- // smemr_r - memory read //------------------------------------------------- READ8_MEMBER( s100_bus_t::smemr_r ) { UINT8 data = 0; device_s100_card_interface *entry = m_device_list.first(); while (entry) { data |= entry->s100_smemr_r(space, offset); entry = entry->next(); } return data; } //------------------------------------------------- // mwrt_w - memory write //------------------------------------------------- WRITE8_MEMBER( s100_bus_t::mwrt_w ) { device_s100_card_interface *entry = m_device_list.first(); while (entry) { entry->s100_mwrt_w(space, offset, data); entry = entry->next(); } } //------------------------------------------------- // sinp_r - I/O read //------------------------------------------------- READ8_MEMBER( s100_bus_t::sinp_r ) { UINT8 data = 0; device_s100_card_interface *entry = m_device_list.first(); while (entry) { data |= entry->s100_sinp_r(space, offset); entry = entry->next(); } return data; } //------------------------------------------------- // sout_w - I/O write //------------------------------------------------- WRITE8_MEMBER( s100_bus_t::sout_w ) { device_s100_card_interface *entry = m_device_list.first(); while (entry) { entry->s100_sout_w(space, offset, data); entry = entry->next(); } }