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path: root/src/devices/bus/apricot/expansion/expansion.cpp
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// license:GPL-2.0+
// copyright-holders:Dirk Best
/***************************************************************************

    ACT Apricot Expansion Slot

***************************************************************************/

#include "emu.h"
#include "expansion.h"


//**************************************************************************
//  EXPANSION SLOT DEVICE
//**************************************************************************

const device_type APRICOT_EXPANSION_SLOT = device_creator<apricot_expansion_slot_device>;

//-------------------------------------------------
//  apricot_expansion_slot_device - constructor
//-------------------------------------------------

apricot_expansion_slot_device::apricot_expansion_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
	device_t(mconfig, APRICOT_EXPANSION_SLOT, "Apricot Expansion Slot", tag, owner, clock, "apricot_exp_slot", __FILE__),
	device_slot_interface(mconfig, *this)
{
}

apricot_expansion_slot_device::apricot_expansion_slot_device(const machine_config &mconfig, device_type type, const char *name,
	const char *tag, device_t *owner, uint32_t clock, const char *shortname, const char *source) :
	device_t(mconfig, type, name, tag, owner, clock, shortname, source),
	device_slot_interface(mconfig, *this)
{
}

//-------------------------------------------------
//  device_start - device-specific startup
//-------------------------------------------------

void apricot_expansion_slot_device::device_start()
{
	device_apricot_expansion_card_interface *dev = dynamic_cast<device_apricot_expansion_card_interface *>(get_card_device());

	if (dev)
	{
		apricot_expansion_bus_device *bus = downcast<apricot_expansion_bus_device *>(m_owner);
		bus->add_card(dev);
	}
}


//**************************************************************************
//  EXPANSION BUS DEVICE
//**************************************************************************

const device_type APRICOT_EXPANSION_BUS = device_creator<apricot_expansion_bus_device>;

//-------------------------------------------------
//  apricot_expansion_bus_device - constructor
//-------------------------------------------------

apricot_expansion_bus_device::apricot_expansion_bus_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
	device_t(mconfig, APRICOT_EXPANSION_BUS, "Apricot Expansion Bus", tag, owner, clock, "apricot_exp_bus", __FILE__),
	m_program(nullptr),
	m_io(nullptr),
	m_program_iop(nullptr),
	m_io_iop(nullptr),
	m_dma1_handler(*this),
	m_dma2_handler(*this),
	m_ext1_handler(*this),
	m_ext2_handler(*this),
	m_int2_handler(*this),
	m_int3_handler(*this), m_cpu_tag(nullptr), m_iop_tag(nullptr)
{
}

//-------------------------------------------------
//  apricot_expansion_bus_device - destructor
//-------------------------------------------------

apricot_expansion_bus_device::~apricot_expansion_bus_device()
{
	m_dev.detach_all();
}

//-------------------------------------------------
//  device_start - device-specific startup
//-------------------------------------------------

void apricot_expansion_bus_device::device_start()
{
	// resolve callbacks
	m_dma1_handler.resolve_safe();
	m_dma2_handler.resolve_safe();
	m_ext1_handler.resolve_safe();
	m_ext2_handler.resolve_safe();
	m_int2_handler.resolve_safe();
	m_int3_handler.resolve_safe();
}

//-------------------------------------------------
//  device_reset - device-specific reset
//-------------------------------------------------

void apricot_expansion_bus_device::device_reset()
{
	cpu_device *cpu = m_owner->subdevice<cpu_device>(m_cpu_tag);
	m_program = &cpu->space(AS_PROGRAM);
	m_io = &cpu->space(AS_IO);

	cpu_device *iop = m_owner->subdevice<cpu_device>(m_iop_tag);
	m_program_iop = &iop->space(AS_PROGRAM);
	m_io_iop = &iop->space(AS_IO);
}

//-------------------------------------------------
//  add_card - add new card to our bus
//-------------------------------------------------

void apricot_expansion_bus_device::add_card(device_apricot_expansion_card_interface *card)
{
	card->set_bus_device(this);
	m_dev.append(*card);
}

//-------------------------------------------------
//  set_cpu_tag - set cpu we are attached to
//-------------------------------------------------

void apricot_expansion_bus_device::set_cpu_tag(device_t &device, device_t *owner, const char *tag)
{
	apricot_expansion_bus_device &bus = dynamic_cast<apricot_expansion_bus_device &>(device);
	bus.m_cpu_tag = tag;
}

//-------------------------------------------------
//  set_iop_tag - set iop we are attached to
//-------------------------------------------------

void apricot_expansion_bus_device::set_iop_tag(device_t &device, device_t *owner, const char *tag)
{
	apricot_expansion_bus_device &bus = dynamic_cast<apricot_expansion_bus_device &>(device);
	bus.m_iop_tag = tag;
}

// callbacks from slot device to the host
WRITE_LINE_MEMBER( apricot_expansion_bus_device::dma1_w ) { m_dma1_handler(state); }
WRITE_LINE_MEMBER( apricot_expansion_bus_device::dma2_w ) { m_dma2_handler(state); }
WRITE_LINE_MEMBER( apricot_expansion_bus_device::ext1_w ) { m_ext1_handler(state); }
WRITE_LINE_MEMBER( apricot_expansion_bus_device::ext2_w ) { m_ext2_handler(state); }
WRITE_LINE_MEMBER( apricot_expansion_bus_device::int2_w ) { m_int2_handler(state); }
WRITE_LINE_MEMBER( apricot_expansion_bus_device::int3_w ) { m_int3_handler(state); }

//-------------------------------------------------
//  install_ram - attach ram to cpu/iop
//-------------------------------------------------

void apricot_expansion_bus_device::install_ram(offs_t addrstart, offs_t addrend, void *baseptr)
{
	m_program->install_ram(addrstart, addrend, baseptr);

	if (m_program_iop)
		m_program_iop->install_ram(addrstart, addrend, baseptr);
}


//**************************************************************************
//  CARTRIDGE INTERFACE
//**************************************************************************

//-------------------------------------------------
//  device_apricot_expansion_card_interface - constructor
//-------------------------------------------------

device_apricot_expansion_card_interface::device_apricot_expansion_card_interface(const machine_config &mconfig, device_t &device) :
	device_slot_card_interface(mconfig, device),
	m_next(nullptr),
	m_bus(nullptr)
{
}

//-------------------------------------------------
//  ~device_apricot_expansion_card_interface - destructor
//-------------------------------------------------

device_apricot_expansion_card_interface::~device_apricot_expansion_card_interface()
{
}

void device_apricot_expansion_card_interface::set_bus_device(apricot_expansion_bus_device *bus)
{
	m_bus = bus;
}