// license:BSD-3-Clause // copyright-holders:Wilbert Pol #include "emu.h" #include "ram.h" DEFINE_DEVICE_TYPE(MSX_SLOT_RAM, msx_slot_ram_device, "msx_slot_ram", "MSX Internal RAM") msx_slot_ram_device::msx_slot_ram_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock) : device_t(mconfig, MSX_SLOT_RAM, tag, owner, clock) , msx_internal_slot_interface(mconfig, *this) { } void msx_slot_ram_device::device_start() { if (m_size < m_end_address - m_start_address) fatalerror("Invalid size %04x for address range %004x - %04x\n", m_start_address, m_end_address); m_ram = std::make_unique(m_size); save_pointer(NAME(m_ram), m_size); u8 *ram = &m_ram[0]; u32 start_address = m_start_address; for (int i = m_start_address >> 14; i < 4 && i * 0x4000 < m_end_address; i++) { page(i)->install_ram(start_address, std::min((i + 1) * 0x4000, m_end_address) - 1, ram); start_address += 0x4000; ram += 0x4000; } }