// license:BSD-3-Clause // copyright-holders:Curt Coder /********************************************************************** Commodore 64 User Port emulation Copyright MESS Team. Visit http://mamedev.org for licensing and usage restrictions. **********************************************************************/ #include "user.h" //************************************************************************** // GLOBAL VARIABLES //************************************************************************** const device_type C64_USER_PORT = &device_creator; //************************************************************************** // CARD INTERFACE //************************************************************************** //------------------------------------------------- // device_c64_user_port_interface - constructor //------------------------------------------------- device_c64_user_port_interface::device_c64_user_port_interface(const machine_config &mconfig, device_t &device) : device_slot_card_interface(mconfig,device) { m_slot = dynamic_cast(device.owner()); } //------------------------------------------------- // ~device_c64_user_port_interface - destructor //------------------------------------------------- device_c64_user_port_interface::~device_c64_user_port_interface() { } //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // c64_user_port_device - constructor //------------------------------------------------- c64_user_port_device::c64_user_port_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : device_t(mconfig, C64_USER_PORT, "C64 user port", tag, owner, clock, "c64_user_port", __FILE__), device_slot_interface(mconfig, *this), m_write_cnt1(*this), m_write_sp1(*this), m_write_cnt2(*this), m_write_sp2(*this), m_write_flag2(*this), m_write_reset(*this) { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void c64_user_port_device::device_start() { m_card = dynamic_cast(get_card_device()); // resolve callbacks m_write_cnt1.resolve_safe(); m_write_sp1.resolve_safe(); m_write_cnt2.resolve_safe(); m_write_sp2.resolve_safe(); m_write_flag2.resolve_safe(); m_write_reset.resolve_safe(); } //------------------------------------------------- // device_reset - device-specific reset //------------------------------------------------- void c64_user_port_device::device_reset() { if (get_card_device()) { get_card_device()->reset(); } } READ8_MEMBER( c64_user_port_device::pb_r ) { UINT8 data = 0xff; if (m_card != NULL) data = m_card->c64_pb_r(space, offset); return data; } WRITE8_MEMBER( c64_user_port_device::pb_w ) { if (m_card != NULL) m_card->c64_pb_w(space, offset, data); } READ_LINE_MEMBER( c64_user_port_device::pa2_r ) { int state = 1; if (m_card != NULL) state = m_card->c64_pa2_r(); return state; } WRITE_LINE_MEMBER( c64_user_port_device::pa2_w ) { if (m_card != NULL) m_card->c64_pa2_w(state); } WRITE_LINE_MEMBER( c64_user_port_device::pc2_w ) { if (m_card != NULL) m_card->c64_pc2_w(state); } WRITE_LINE_MEMBER( c64_user_port_device::atn_w ) { if (m_card != NULL) m_card->c64_atn_w(state); } WRITE_LINE_MEMBER( c64_user_port_device::cnt1_w ) { if (m_card != NULL) m_card->c64_cnt1_w(state); } WRITE_LINE_MEMBER( c64_user_port_device::sp1_w ) { if (m_card != NULL) m_card->c64_sp1_w(state); } WRITE_LINE_MEMBER( c64_user_port_device::cnt2_w ) { if (m_card != NULL) m_card->c64_cnt2_w(state); } WRITE_LINE_MEMBER( c64_user_port_device::sp2_w ) { if (m_card != NULL) m_card->c64_sp2_w(state); } //------------------------------------------------- // SLOT_INTERFACE( c64_user_port_cards ) //------------------------------------------------- SLOT_INTERFACE_START( c64_user_port_cards ) SLOT_INTERFACE("4cga", C64_4CGA) SLOT_INTERFACE("4dxh", C64_4DXH) SLOT_INTERFACE("4ksa", C64_4KSA) SLOT_INTERFACE("4tba", C64_4TBA) SLOT_INTERFACE("bn1541", C64_BN1541) SLOT_INTERFACE("geocable", C64_GEOCABLE) SLOT_INTERFACE("rs232", C64_VIC1011) SLOT_INTERFACE_END