// license:BSD-3-Clause // copyright-holders:Wilbert Pol /* Emulation of the firmware mapper as found in Frael Bruc 100 machines. */ #include "emu.h" #include "bruc100.h" DEFINE_DEVICE_TYPE(MSX_SLOT_BRUC100, msx_slot_bruc100_device, "msx_slot_bruc100", "MSX Internal BRUC100") msx_slot_bruc100_device::msx_slot_bruc100_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) : device_t(mconfig, MSX_SLOT_BRUC100, tag, owner, clock) , msx_internal_slot_interface(mconfig, *this) , m_rom_region(*this, finder_base::DUMMY_TAG) , m_rombank(*this, "rombank%u", 0U) , m_region_offset(0) { } void msx_slot_bruc100_device::device_start() { // Sanity checks if (m_rom_region->bytes() < m_region_offset + 0x10000) { fatalerror("Memory region '%s' is too small for the BRUC100 firmware\n", m_rom_region.finder_tag()); } m_rombank[0]->configure_entries(0, 2, m_rom_region->base() + m_region_offset, 0x8000); m_rombank[1]->configure_entries(0, 2, m_rom_region->base() + m_region_offset + 0x4000, 0x8000); page(0)->install_read_bank(0x0000, 0x3fff, m_rombank[0]); page(1)->install_read_bank(0x4000, 0x7fff, m_rombank[1]); } void msx_slot_bruc100_device::device_reset() { m_rombank[0]->set_entry(0); m_rombank[1]->set_entry(0); } void msx_slot_bruc100_device::select_bank(u8 bank) { m_rombank[0]->set_entry(bank); m_rombank[1]->set_entry(bank); }