// license:BSD-3-Clause // copyright-holders:Curt Coder /********************************************************************** Compucolor Floppy Disk Drive emulation Copyright MESS Team. Visit http://mamedev.org for licensing and usage restrictions. *********************************************************************/ #include "floppy.h" //************************************************************************** // DEVICE DEFINITIONS //************************************************************************** const device_type COMPUCOLOR_FLOPPY_PORT = &device_creator; const device_type COMPUCOLOR_FLOPPY = &device_creator; //------------------------------------------------- // SLOT_INTERFACE( compucolor_floppy_port_devices ) //------------------------------------------------- SLOT_INTERFACE_START( compucolor_floppy_port_devices ) SLOT_INTERFACE("floppy", COMPUCOLOR_FLOPPY) SLOT_INTERFACE_END //------------------------------------------------- // FLOPPY_FORMATS( floppy_formats ) //------------------------------------------------- FLOPPY_FORMATS_MEMBER( compucolor_floppy_device::floppy_formats ) FLOPPY_CCVF_FORMAT FLOPPY_FORMATS_END //------------------------------------------------- // SLOT_INTERFACE( compucolor_floppies ) //------------------------------------------------- static SLOT_INTERFACE_START( compucolor_floppies ) SLOT_INTERFACE_INTERNAL( "525sssd", FLOPPY_525_SSSD ) SLOT_INTERFACE_END //------------------------------------------------- // MACHINE_DRIVER( compucolor_floppy ) //------------------------------------------------- static MACHINE_CONFIG_FRAGMENT( compucolor_floppy ) MCFG_FLOPPY_DRIVE_ADD("floppy", compucolor_floppies, "525sssd", compucolor_floppy_device::floppy_formats) MACHINE_CONFIG_END //------------------------------------------------- // machine_config_additions - device-specific // machine configurations //------------------------------------------------- machine_config_constructor compucolor_floppy_device::device_mconfig_additions() const { return MACHINE_CONFIG_NAME( compucolor_floppy ); } //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // device_compucolor_floppy_port_interface - constructor //------------------------------------------------- device_compucolor_floppy_port_interface::device_compucolor_floppy_port_interface(const machine_config &mconfig, device_t &device) : device_rs232_port_interface(mconfig, device) { } //------------------------------------------------- // compucolor_floppy_port_device - constructor //------------------------------------------------- compucolor_floppy_port_device::compucolor_floppy_port_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : rs232_port_device(mconfig, COMPUCOLOR_FLOPPY_PORT, "Compucolor Floppy Port", tag, owner, clock, "compclr_flp_port", __FILE__) { } //------------------------------------------------- // compucolor_floppy_device - constructor //------------------------------------------------- compucolor_floppy_device::compucolor_floppy_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : device_t(mconfig, COMPUCOLOR_FLOPPY, "Compucolor floppy", tag, owner, clock, "compclr_flp", __FILE__), device_compucolor_floppy_port_interface(mconfig, *this), m_floppy(*this, "floppy:525sssd"), m_rw(1), m_stp(0), m_sel(1), m_period(attotime::from_hz(9600*8)) { m_owner = dynamic_cast(this->owner()); } //------------------------------------------------- // device_config_complete - //------------------------------------------------- void compucolor_floppy_port_device::device_config_complete() { rs232_port_device::device_config_complete(); m_dev = dynamic_cast(get_card_device()); } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void compucolor_floppy_port_device::device_start() { rs232_port_device::device_start(); } void compucolor_floppy_device::device_start() { // allocate timer m_timer = timer_alloc(); m_timer->adjust(attotime::from_hz(9600*8), 0, attotime::from_hz(9600*8)); // state saving save_item(NAME(m_rw)); save_item(NAME(m_stp)); save_item(NAME(m_sel)); } //------------------------------------------------- // device_timer - handle timer events //------------------------------------------------- void compucolor_floppy_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) { if (!m_sel && !m_rw) { output_rxd(read_bit()); } } //------------------------------------------------- // tx_w - //------------------------------------------------- void compucolor_floppy_device::tx(UINT8 state) { if (!m_sel && m_rw) { write_bit(state); } } //------------------------------------------------- // rw_w - //------------------------------------------------- void compucolor_floppy_device::rw_w(int state) { if (!m_rw && state) { output_rxd(1); } m_rw = state; } //------------------------------------------------- // stepper_w - //------------------------------------------------- void compucolor_floppy_device::stepper_w(UINT8 data) { if (!m_sel) { if ((m_stp == 1 && data == 4) || (m_stp == 2 && data == 1) || (m_stp == 4 && data == 2)) { // step in m_floppy->dir_w(1); m_floppy->stp_w(0); m_floppy->stp_w(1); } else if ((m_stp == 1 && data == 2) || (m_stp == 2 && data == 4) || (m_stp == 4 && data == 1)) { // step out m_floppy->dir_w(0); m_floppy->stp_w(0); m_floppy->stp_w(1); } } m_stp = data; } //------------------------------------------------- // select_w - //------------------------------------------------- void compucolor_floppy_device::select_w(int state) { m_floppy->mon_w(state); if (!m_sel && state) { output_rxd(1); } m_sel = state; } //------------------------------------------------- // read_bit - //------------------------------------------------- bool compucolor_floppy_device::read_bit() { attotime when = machine().time(); attotime edge = m_floppy->get_next_transition(when); attotime next = when + m_period; return (edge.is_never() || edge >= next) ? 0 : 1; } //------------------------------------------------- // write_bit - //------------------------------------------------- void compucolor_floppy_device::write_bit(bool bit) { // TODO }