// license:BSD-3-Clause // copyright-holders:Wilbert Pol #include "emu.h" #include "dooly.h" DEFINE_DEVICE_TYPE(MSX_CART_DOOLY, msx_cart_dooly_device, "msx_cart_dooly", "MSX Cartridge - Dooly") msx_cart_dooly_device::msx_cart_dooly_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : device_t(mconfig, MSX_CART_DOOLY, tag, owner, clock) , msx_cart_interface(mconfig, *this) , m_prot(0) { } void msx_cart_dooly_device::device_start() { save_item(NAME(m_prot)); } void msx_cart_dooly_device::device_reset() { m_prot = 0; } void msx_cart_dooly_device::initialize_cartridge() { if (get_rom_size() != 0x8000) { fatalerror("dooly: Invalid ROM size\n"); } } uint8_t msx_cart_dooly_device::read_cart(offs_t offset) { if (offset >= 0x4000 && offset < 0xc000) { uint8_t data = get_rom_base()[offset - 0x4000]; switch (m_prot) { case 0x04: data = bitswap<8>(data, 7, 6, 5, 4, 3, 1, 0, 2); break; } return data; } return 0xff; } void msx_cart_dooly_device::write_cart(offs_t offset, uint8_t data) { if (offset >= 0x4000 && offset < 0xc000) { m_prot = data & 0x07; if (m_prot != 0 && m_prot != 4) { logerror("msx_cart_dooly_device: unhandled write %02x to %04x\n", data, offset); } } }