/********************************************************************** Commodore Plus/4 User Port emulation Copyright MESS Team. Visit http://mamedev.org for licensing and usage restrictions. **********************************************************************/ #include "user.h" //************************************************************************** // GLOBAL VARIABLES //************************************************************************** const device_type PLUS4_USER_PORT = &device_creator; //************************************************************************** // CARD INTERFACE //************************************************************************** //------------------------------------------------- // device_plus4_user_port_interface - constructor //------------------------------------------------- device_plus4_user_port_interface::device_plus4_user_port_interface(const machine_config &mconfig, device_t &device) : device_slot_card_interface(mconfig,device) { m_slot = dynamic_cast(device.owner()); } //------------------------------------------------- // ~device_plus4_user_port_interface - destructor //------------------------------------------------- device_plus4_user_port_interface::~device_plus4_user_port_interface() { } //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // plus4_user_port_device - constructor //------------------------------------------------- plus4_user_port_device::plus4_user_port_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : device_t(mconfig, PLUS4_USER_PORT, "User Port", tag, owner, clock, "plus4_user_port", __FILE__), device_slot_interface(mconfig, *this) { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void plus4_user_port_device::device_start() { m_cart = dynamic_cast(get_card_device()); } //------------------------------------------------- // device_reset - device-specific reset //------------------------------------------------- void plus4_user_port_device::device_reset() { if (get_card_device()) { get_card_device()->reset(); } } READ8_MEMBER( plus4_user_port_device::p_r ) { UINT8 data = 0xff; if (m_cart != NULL) data = m_cart->plus4_p_r(); return data; } WRITE8_MEMBER( plus4_user_port_device::p_w ) { if (m_cart != NULL) m_cart->plus4_p_w(data); } READ_LINE_MEMBER( plus4_user_port_device::rxd_r ) { int state = 1; if (m_cart != NULL) state = m_cart->plus4_rxd_r(); return state; } READ_LINE_MEMBER( plus4_user_port_device::dcd_r ) { int state = 1; if (m_cart != NULL) state = m_cart->plus4_dcd_r(); return state; } READ_LINE_MEMBER( plus4_user_port_device::dsr_r ) { int state = 1; if (m_cart != NULL) state = m_cart->plus4_dsr_r(); return state; } WRITE_LINE_MEMBER( plus4_user_port_device::txd_w ) { if (m_cart != NULL) m_cart->plus4_txd_w(state); } WRITE_LINE_MEMBER( plus4_user_port_device::dtr_w ) { if (m_cart != NULL) m_cart->plus4_dtr_w(state); } WRITE_LINE_MEMBER( plus4_user_port_device::rts_w ) { if (m_cart != NULL) m_cart->plus4_rts_w(state); } WRITE_LINE_MEMBER( plus4_user_port_device::rxc_w ) { if (m_cart != NULL) m_cart->plus4_rxc_w(state); } WRITE_LINE_MEMBER( plus4_user_port_device::atn_w ) { if (m_cart != NULL) m_cart->plus4_atn_w(state); } //------------------------------------------------- // SLOT_INTERFACE( plus4_user_port_cards ) //------------------------------------------------- SLOT_INTERFACE_START( plus4_user_port_cards ) SLOT_INTERFACE("diag264", DIAG264_USER_PORT_LOOPBACK) SLOT_INTERFACE_END