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// license:BSD-3-Clause
// copyright-holders:S. Smith,David Haywood,Fabio Priuli
/***********************************************************************************************************
Neo Geo cart emulation
Standard cart type, possibly with bankswitch in the area beyond 0x100000
(We also include here V-Liner, which uses a standard cart + RAM + some custom input)
***********************************************************************************************************/
#include "emu.h"
#include "rom.h"
//-------------------------------------------------
// neogeo_rom_device - constructor
//-------------------------------------------------
DEFINE_DEVICE_TYPE(NEOGEO_ROM, neogeo_rom_device, "neocart_rom", "Neo Geo Standard Carts")
neogeo_rom_device::neogeo_rom_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint16_t clock) :
device_t(mconfig, type, tag, owner, clock),
device_neogeo_cart_interface(mconfig, *this)
{
}
neogeo_rom_device::neogeo_rom_device(const machine_config &mconfig, const char *tag, device_t *owner, uint16_t clock) :
neogeo_rom_device(mconfig, NEOGEO_ROM, tag, owner, clock)
{
}
//-------------------------------------------------
// mapper specific start/reset
//-------------------------------------------------
void neogeo_rom_device::device_start()
{
}
void neogeo_rom_device::device_reset()
{
}
/*-------------------------------------------------
mapper specific handlers
-------------------------------------------------*/
uint16_t neogeo_rom_device::rom_r(offs_t offset)
{
// to speed up access to ROM, the access to ROM are actually replaced in the driver
// by accesses to the maincpu rom region, where we have anyway copied the rom content
uint16_t* rom = (get_rom_size()) ? get_rom_base() : get_region_rom_base();
return rom[offset];
}
void neogeo_rom_device::banksel_w(uint16_t data)
{
// to speed up access to ROM, the banking is taken care of at driver level
// by mapping higher banks to the corresponding offset in maincpu rom region
}
/*************************************************
V-Liner : this is plain NeoGeo cart + RAM
**************************************************/
DEFINE_DEVICE_TYPE(NEOGEO_VLINER_CART, neogeo_vliner_cart_device, "neocart_vliner", "Neo Geo V-Liner Cart")
neogeo_vliner_cart_device::neogeo_vliner_cart_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock) :
neogeo_rom_device(mconfig, NEOGEO_VLINER_CART, tag, owner, clock),
m_nvram(*this, "nvram")
{
}
void neogeo_vliner_cart_device::device_start()
{
m_cart_ram = make_unique_clear<uint16_t[]>(0x2000/2);
m_nvram->set_base(m_cart_ram.get(), 0x2000);
save_pointer(NAME(m_cart_ram), 0x2000/2);
}
void neogeo_vliner_cart_device::device_add_mconfig(machine_config &config)
{
NVRAM(config, m_nvram);
}
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