// license:BSD-3-Clause // copyright-holders:Wilbert Pol /* Emulation of the firmware mapper as found in Sony HB-F1XDJ and HB-F1XV machines. */ #include "emu.h" #include "sony08.h" DEFINE_DEVICE_TYPE(MSX_SLOT_SONY08, msx_slot_sony08_device, "msx_slot_sony08", "MSX Internal SONY08") msx_slot_sony08_device::msx_slot_sony08_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) : device_t(mconfig, MSX_SLOT_SONY08, tag, owner, clock) , msx_internal_slot_interface(mconfig, *this) , m_nvram(*this, "nvram") , m_rom_region(*this, finder_base::DUMMY_TAG) , m_rombank(*this, "rombank%u", 0U) , m_view{ {*this, "view0"}, {*this, "view1"} } , m_region_offset(0) { } void msx_slot_sony08_device::device_add_mconfig(machine_config &config) { NVRAM(config, m_nvram, nvram_device::DEFAULT_ALL_0); } void msx_slot_sony08_device::device_start() { // Sanity checks if (m_rom_region->bytes() < m_region_offset + 0x100000) { fatalerror("Memory region '%s' is too small for the SONY08 firmware\n", m_rom_region.finder_tag()); } m_sram= std::make_unique(SRAM_SIZE); m_nvram->set_base(&m_sram[0], SRAM_SIZE); save_pointer(NAME(m_sram), SRAM_SIZE); for (int i = 0; i < 4; i++) m_rombank[i]->configure_entries(0, 0x80, m_rom_region->base() + m_region_offset, 0x2000); m_rombank[4]->configure_entries(0, 0x100, m_rom_region->base() + m_region_offset + 0x80000, 0x800); m_rombank[5]->configure_entries(0, 0x100, m_rom_region->base() + m_region_offset + 0x80000, 0x800); page(0)->install_view(0x0000, 0x3fff, m_view[0]); m_view[0][0]; m_view[0][1].install_ram(0x0000, 0x3fff, &m_sram[0]); page(1)->install_read_bank(0x4000, 0x5fff, m_rombank[0]); page(1)->install_write_handler(0x4fff, 0x4fff, emu::rw_delegate(*this, FUNC(msx_slot_sony08_device::bank_w<0>))); page(1)->install_view(0x6000, 0x7fff, m_view[1]); m_view[1][0].install_read_bank(0x6000, 0x7fff, m_rombank[1]); m_view[1][1].install_read_bank(0x6000, 0x6fff, m_rombank[1]); m_view[1][1].install_read_bank(0x7000, 0x77ff, m_rombank[4]); m_view[1][1].install_read_bank(0x7800, 0x7fff, m_rombank[5]); page(1)->install_write_handler(0x6fff, 0x6fff, emu::rw_delegate(*this, FUNC(msx_slot_sony08_device::bank_w<1>))); page(1)->install_write_handler(0x77ff, 0x77ff, emu::rw_delegate(*this, FUNC(msx_slot_sony08_device::bank_w<4>))); page(1)->install_write_handler(0x7fff, 0x7fff, emu::rw_delegate(*this, FUNC(msx_slot_sony08_device::bank_w<5>))); page(2)->install_read_bank(0x8000, 0x9fff, m_rombank[2]); page(2)->install_write_handler(0x8fff, 0x8fff, emu::rw_delegate(*this, FUNC(msx_slot_sony08_device::bank_w<2>))); page(2)->install_read_bank(0xa000, 0xbfff, m_rombank[3]); page(2)->install_write_handler(0xafff, 0xafff, emu::rw_delegate(*this, FUNC(msx_slot_sony08_device::bank_w<3>))); } void msx_slot_sony08_device::device_reset() { for (int i = 0; i < 2; i++) m_view[i].select(0); for (int i = 0; i < 6; i++) m_rombank[i]->set_entry(0); } template void msx_slot_sony08_device::bank_w(u8 data) { if (Bank >= 4) m_rombank[Bank]->set_entry(data); else m_rombank[Bank]->set_entry(data & 0x7f); if (Bank < 2) m_view[Bank].select(BIT(data, 7) ? 1 : 0); }