// license:BSD-3-Clause // copyright-holders:Wilbert Pol #include "emu.h" #include "rom.h" DEFINE_DEVICE_TYPE(MSX_SLOT_ROM, msx_slot_rom_device, "msx_slot_rom", "MSX Internal ROM") msx_slot_rom_device::msx_slot_rom_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) : msx_slot_rom_device(mconfig, MSX_SLOT_ROM, tag, owner, clock) { } msx_slot_rom_device::msx_slot_rom_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock) : device_t(mconfig, type, tag, owner, clock) , msx_internal_slot_interface(mconfig, *this) , m_rom_region(*this, finder_base::DUMMY_TAG) , m_region_offset(0) { } void msx_slot_rom_device::device_start() { // Sanity checks if (m_rom_region->bytes() < m_region_offset + m_size) { fatalerror("Memory region '%s' is too small for rom slot '%s'\n", m_rom_region.finder_tag(), tag()); } u8 *rom = m_rom_region->base() + m_region_offset; for (int i = m_start_address >> 14; i < 4 && i * 0x4000 < m_end_address; i++) { page(i)->install_rom(i * 0x4000, std::min((i + 1) * 0x4000, m_end_address) - 1, rom); rom += 0x4000; } }