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// license:BSD-3-Clause
// copyright-holders:Wilbert Pol
#include "emu.h"
#include "superloderunner.h"
namespace {
class msx_cart_superloderunner_device : public device_t, public msx_cart_interface
{
public:
msx_cart_superloderunner_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock)
: device_t(mconfig, MSX_CART_SUPERLODERUNNER, tag, owner, clock)
, msx_cart_interface(mconfig, *this)
, m_rombank(*this, "rombank")
{ }
virtual std::error_condition initialize_cartridge(std::string &message) override;
protected:
// device_t implementation
virtual void device_start() override ATTR_COLD;
private:
void bank_w(u8 data);
memory_bank_creator m_rombank;
};
void msx_cart_superloderunner_device::device_start()
{
// Install evil system wide memory write handler
memory_space().install_write_handler(0x0000, 0x0000, emu::rw_delegate(*this, FUNC(msx_cart_superloderunner_device::bank_w)));
}
std::error_condition msx_cart_superloderunner_device::initialize_cartridge(std::string &message)
{
if (!cart_rom_region())
{
message = "msx_cart_superloderunner_device: Required region 'rom' was not found.";
return image_error::INTERNAL;
}
if (cart_rom_region()->bytes() != 0x20000)
{
message = "msx_cart_superloderunner_device: Region 'rom' has unsupported size.";
return image_error::INVALIDLENGTH;
}
m_rombank->configure_entries(0, 8, cart_rom_region()->base(), 0x4000);
page(2)->install_read_bank(0x8000, 0xbfff, m_rombank);
return std::error_condition();
}
void msx_cart_superloderunner_device::bank_w(u8 data)
{
m_rombank->set_entry(data & 0x07);
}
} // anonymous namespace
DEFINE_DEVICE_TYPE_PRIVATE(MSX_CART_SUPERLODERUNNER, msx_cart_interface, msx_cart_superloderunner_device, "msx_cart_superloderunner", "MSX Cartridge - Super Lode Runner")
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