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// license:BSD-3-Clause
// copyright-holders:Sandro Ronco
/*********************************************************************
z88.c
Z88 cartridge slots emulation
*********************************************************************/
#include "emu.h"
#include "z88.h"
/***************************************************************************
PARAMETERS
***************************************************************************/
#define CLOSE_FLAP_TIME attotime::from_msec(200)
//**************************************************************************
// GLOBAL VARIABLES
//**************************************************************************
const device_type Z88CART_SLOT = &device_creator<z88cart_slot_device>;
//**************************************************************************
// Z88 cartridges Interface
//**************************************************************************
//-------------------------------------------------
// device_z88cart_interface - constructor
//-------------------------------------------------
device_z88cart_interface::device_z88cart_interface(const machine_config &mconfig, device_t &device)
: device_slot_card_interface(mconfig, device)
{
}
//-------------------------------------------------
// ~device_z88cart_interface - destructor
//-------------------------------------------------
device_z88cart_interface::~device_z88cart_interface()
{
}
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
//-------------------------------------------------
// z88cart_slot_device - constructor
//-------------------------------------------------
z88cart_slot_device::z88cart_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
device_t(mconfig, Z88CART_SLOT, "Z88 Cartridge Slot", tag, owner, clock, "z88cart_slot", __FILE__),
device_image_interface(mconfig, *this),
device_slot_interface(mconfig, *this),
m_out_flp_cb(*this), m_cart(nullptr), m_flp_timer(nullptr)
{
}
//-------------------------------------------------
// z88cart_slot_device - destructor
//-------------------------------------------------
z88cart_slot_device::~z88cart_slot_device()
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void z88cart_slot_device::device_start()
{
m_cart = dynamic_cast<device_z88cart_interface *>(get_card_device());
// resolve callbacks
m_out_flp_cb.resolve_safe();
m_flp_timer = timer_alloc(TIMER_FLP_CLEAR);
m_flp_timer->reset();
}
//-------------------------------------------------
// device_config_complete - perform any
// operations now that the configuration is
// complete
//-------------------------------------------------
void z88cart_slot_device::device_config_complete()
{
// set brief and instance name
update_names();
}
//-------------------------------------------------
// device_timer - handler timer events
//-------------------------------------------------
void z88cart_slot_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
{
if (id == TIMER_FLP_CLEAR)
{
// close the flap
m_out_flp_cb(CLEAR_LINE);
}
}
/*-------------------------------------------------
call load
-------------------------------------------------*/
image_init_result z88cart_slot_device::call_load()
{
if (m_cart)
{
offs_t read_length;
uint8_t *cart_base = m_cart->get_cart_base();
if (cart_base != nullptr)
{
if (software_entry() == nullptr)
{
read_length = length();
fread(cart_base + (m_cart->get_cart_size() - read_length), read_length);
}
else
{
read_length = get_software_region_length("rom");
memcpy(cart_base + (m_cart->get_cart_size() - read_length), get_software_region("rom"), read_length);
}
}
else
return image_init_result::FAIL;
}
// open the flap
m_out_flp_cb(ASSERT_LINE);
// setup the timer for close the flap
m_flp_timer->adjust(CLOSE_FLAP_TIME);
return image_init_result::PASS;
}
/*-------------------------------------------------
call_unload
-------------------------------------------------*/
void z88cart_slot_device::call_unload()
{
if (m_cart)
{
auto cart_size = m_cart->get_cart_size();
if (cart_size>0)
memset(m_cart->get_cart_base(), 0xff, cart_size);
}
// open the flap
m_out_flp_cb(ASSERT_LINE);
// setup the timer for close the flap
m_flp_timer->adjust(CLOSE_FLAP_TIME);
}
/*-------------------------------------------------
get default card software
-------------------------------------------------*/
std::string z88cart_slot_device::get_default_card_software()
{
return software_get_default_slot("128krom");
}
/*-------------------------------------------------
read
-------------------------------------------------*/
READ8_MEMBER(z88cart_slot_device::read)
{
if (m_cart)
return m_cart->read(space, offset);
else
return 0xff;
}
/*-------------------------------------------------
write
-------------------------------------------------*/
WRITE8_MEMBER(z88cart_slot_device::write)
{
if (m_cart)
m_cart->write(space, offset, data);
}
/*-------------------------------------------------
get_cart_base
-------------------------------------------------*/
uint8_t* z88cart_slot_device::get_cart_base()
{
if (m_cart)
return m_cart->get_cart_base();
else
return nullptr;
}
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