// license:BSD-3-Clause // copyright-holders:Wilbert Pol #include "emu.h" #include "hfox.h" DEFINE_DEVICE_TYPE(MSX_CART_HFOX, msx_cart_hfox_device, "msx_cart_hfox", "MSX Cartridge - Harry Fox") msx_cart_hfox_device::msx_cart_hfox_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : device_t(mconfig, MSX_CART_HFOX, tag, owner, clock) , msx_cart_interface(mconfig, *this) , m_selected_bank{ 0, 0 } , m_bank_base{ nullptr, nullptr } { } void msx_cart_hfox_device::device_start() { save_item(NAME(m_selected_bank)); machine().save().register_postload(save_prepost_delegate(FUNC(msx_cart_hfox_device::restore_banks), this)); } void msx_cart_hfox_device::restore_banks() { m_bank_base[0] = get_rom_base() + ((m_selected_bank[0] & 0x01) * 0x8000); m_bank_base[1] = get_rom_base() + ((m_selected_bank[1] & 0x01) * 0x8000) + 0x4000; } void msx_cart_hfox_device::device_reset() { m_selected_bank[0] = m_selected_bank[1] = 0; } void msx_cart_hfox_device::initialize_cartridge() { if (get_rom_size() < 0x10000) { fatalerror("rtype: Invalid ROM size\n"); } restore_banks(); } READ8_MEMBER(msx_cart_hfox_device::read_cart) { if (offset >= 0x4000 && offset < 0xc000) { return m_bank_base[offset >> 15][offset & 0x3fff]; } return 0xff; } WRITE8_MEMBER(msx_cart_hfox_device::write_cart) { switch (offset) { case 0x6000: m_selected_bank[0] = data; restore_banks(); break; case 0x7000: m_selected_bank[1] = data; restore_banks(); break; default: logerror("msx_cart_hfox_device: unhandled write %02x to %04x\n", data, offset); break; } }