// license:BSD-3-Clause // copyright-holders:David Haywood #include "emu.h" #include "machine/gaelco_ds5002fp.h" #include "cpu/mcs51/mcs51.h" #include "machine/nvram.h" DEFINE_DEVICE_TYPE(GAELCO_DS5002FP, gaelco_ds5002fp_device, "gaelco_ds5002fp", "Gaelco DS5002FP") void gaelco_ds5002fp_device::dallas_rom(address_map &map) { map(0x00000, 0x07fff).readonly().share("sram"); } void gaelco_ds5002fp_device::dallas_ram(address_map &map) { map(0x00000, 0x0ffff).rw(FUNC(gaelco_ds5002fp_device::hostmem_r), FUNC(gaelco_ds5002fp_device::hostmem_w)); map(0x10000, 0x17fff).ram().share("sram"); // yes, the games access it as data and use it for temporary storage!! } gaelco_ds5002fp_device::gaelco_ds5002fp_device(machine_config const &mconfig, char const *tag, device_t *owner, u32 clock) : device_t(mconfig, GAELCO_DS5002FP, tag, owner, clock) , device_memory_interface(mconfig, *this) , m_hostmem_config({ "hostmem", ENDIANNESS_BIG, 8, 16, 0 }) , m_hostmem(nullptr) { } READ8_MEMBER(gaelco_ds5002fp_device::hostmem_r) { return m_hostmem->read_byte(offset); } WRITE8_MEMBER(gaelco_ds5002fp_device::hostmem_w) { m_hostmem->write_byte(offset, data); } void gaelco_ds5002fp_device::device_add_mconfig(machine_config &config) { ds5002fp_device &mcu(DS5002FP(config, "mcu", DERIVED_CLOCK(1, 1))); mcu.set_addrmap(AS_PROGRAM, &gaelco_ds5002fp_device::dallas_rom); mcu.set_addrmap(AS_IO, &gaelco_ds5002fp_device::dallas_ram); NVRAM(config, "sram", nvram_device::DEFAULT_ALL_0); } void gaelco_ds5002fp_device::device_start() { m_hostmem = &space(0); } device_memory_interface::space_config_vector gaelco_ds5002fp_device::memory_space_config() const { return space_config_vector{ std::make_pair(0, &m_hostmem_config) }; }