// license:BSD-3-Clause // copyright-holders:Fabio Priuli /*********************************************************************************************************** Samsung SPC-1000 Expansion port ***********************************************************************************************************/ #include "emu.h" #include "exp.h" //************************************************************************** // GLOBAL VARIABLES //************************************************************************** DEFINE_DEVICE_TYPE(SPC1000_EXP_SLOT, spc1000_exp_device, "spc1000_exp", "Samsung SPC-1000 expansion") device_spc1000_card_interface::device_spc1000_card_interface(const machine_config &mconfig, device_t &device) : device_interface(device, "spc1000exp") { } device_spc1000_card_interface::~device_spc1000_card_interface() { } //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // spc1000_exp_device - constructor //------------------------------------------------- spc1000_exp_device::spc1000_exp_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : device_t(mconfig, SPC1000_EXP_SLOT, tag, owner, clock), device_single_card_slot_interface(mconfig, *this), m_card(nullptr) { } //------------------------------------------------- // spc1000_exp_device - destructor //------------------------------------------------- spc1000_exp_device::~spc1000_exp_device() { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void spc1000_exp_device::device_start() { m_card = get_card_device(); } /*------------------------------------------------- read -------------------------------------------------*/ uint8_t spc1000_exp_device::read(offs_t offset) { if (m_card) return m_card->read(offset); else return 0xff; } /*------------------------------------------------- write -------------------------------------------------*/ void spc1000_exp_device::write(offs_t offset, uint8_t data) { if (m_card) m_card->write(offset, data); }