// license:BSD-3-Clause
// copyright-holders:Barry Rodewald
/*
* cpc_rom.c
* Amstrad CPC mountable ROM image device
*
*/
#include "emu.h"
#include "cpc_rom.h"
const device_type CPC_ROM = device_creator<cpc_rom_device>;
SLOT_INTERFACE_EXTERN(cpc_exp_cards);
//**************************************************************************
// DEVICE CONFIG INTERFACE
//**************************************************************************
// device machine config
static MACHINE_CONFIG_FRAGMENT( cpc_rom )
MCFG_ROMSLOT_ADD("rom1")
MCFG_ROMSLOT_ADD("rom2")
MCFG_ROMSLOT_ADD("rom3")
MCFG_ROMSLOT_ADD("rom4")
MCFG_ROMSLOT_ADD("rom5")
MCFG_ROMSLOT_ADD("rom6")
MCFG_ROMSLOT_ADD("rom7")
MCFG_ROMSLOT_ADD("rom8")
// pass-through
MCFG_DEVICE_ADD("exp", CPC_EXPANSION_SLOT, 0)
MCFG_DEVICE_SLOT_INTERFACE(cpc_exp_cards, nullptr, false)
MCFG_CPC_EXPANSION_SLOT_OUT_IRQ_CB(DEVWRITELINE("^", cpc_expansion_slot_device, irq_w))
MCFG_CPC_EXPANSION_SLOT_OUT_NMI_CB(DEVWRITELINE("^", cpc_expansion_slot_device, nmi_w))
MCFG_CPC_EXPANSION_SLOT_OUT_ROMDIS_CB(DEVWRITELINE("^", cpc_expansion_slot_device, romdis_w)) // ROMDIS
MACHINE_CONFIG_END
machine_config_constructor cpc_rom_device::device_mconfig_additions() const
{
return MACHINE_CONFIG_NAME( cpc_rom );
}
//**************************************************************************
// LIVE DEVICE
//**************************************************************************
cpc_rom_device::cpc_rom_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) :
device_t(mconfig, CPC_ROM, "ROM Box", tag, owner, clock, "cpc_rom", __FILE__),
device_cpc_expansion_card_interface(mconfig, *this)
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void cpc_rom_device::device_start()
{
}
//-------------------------------------------------
// device_reset - device-specific reset
//-------------------------------------------------
void cpc_rom_device::device_reset()
{
}
/*** ROM image device ***/
// device type definition
const device_type ROMSLOT = device_creator<rom_image_device>;
//-------------------------------------------------
// rom_image_device - constructor
//-------------------------------------------------
rom_image_device::rom_image_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock)
: device_t(mconfig, ROMSLOT, "ROM image", tag, owner, clock, "rom_image", __FILE__),
device_image_interface(mconfig, *this), m_base(nullptr)
{
}
//-------------------------------------------------
// rom_image_device - destructor
//-------------------------------------------------
rom_image_device::~rom_image_device()
{
}
//-------------------------------------------------
// device_start - device-specific startup
//-------------------------------------------------
void rom_image_device::device_start()
{
m_base = nullptr;
}
/*-------------------------------------------------
DEVICE_IMAGE_LOAD( rom )
-------------------------------------------------*/
image_init_result rom_image_device::call_load()
{
device_image_interface* image = this;
uint64_t size = image->length();
m_base = std::make_unique<uint8_t[]>(16384);
if(size <= 16384)
{
image->fread(m_base.get(),size);
}
else
{
image->fseek(size-16384,SEEK_SET);
image->fread(m_base.get(),16384);
}
return image_init_result::PASS;
}
/*-------------------------------------------------
DEVICE_IMAGE_UNLOAD( rom )
-------------------------------------------------*/
void rom_image_device::call_unload()
{
m_base = nullptr;
}