// license:BSD-3-Clause // copyright-holders:David Haywood #include "emu.h" #include "slot.h" //************************************************************************** // GLOBAL VARIABLES //************************************************************************** DEFINE_DEVICE_TYPE(EKARA_CART_SLOT, ekara_cart_slot_device, "ekara_cart_slot", "e-kara Cartridge Slot") //************************************************************************** // EKARA cartridges Interface //************************************************************************** //------------------------------------------------- // device_ekara_cart_interface - constructor //------------------------------------------------- device_ekara_cart_interface::device_ekara_cart_interface(const machine_config &mconfig, device_t &device) : device_interface(device, "ekaracart"), m_rom(nullptr), m_rom_size(0) { } //------------------------------------------------- // ~device_ekara_cart_interface - destructor //------------------------------------------------- device_ekara_cart_interface::~device_ekara_cart_interface() { } //------------------------------------------------- // rom_alloc - alloc the space for the cart //------------------------------------------------- void device_ekara_cart_interface::rom_alloc(uint32_t size) { if (m_rom == nullptr) { m_rom = device().machine().memory().region_alloc(device().subtag("^cart:rom"), size, 1, ENDIANNESS_BIG)->base(); m_rom_size = size; } } //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // ekara_cart_slot_device - constructor //------------------------------------------------- ekara_cart_slot_device::ekara_cart_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : device_t(mconfig, EKARA_CART_SLOT, tag, owner, clock), device_cartrom_image_interface(mconfig, *this), device_single_card_slot_interface(mconfig, *this), m_type(EKARA_PLAIN), m_cart(nullptr) { } //------------------------------------------------- // ekara_cart_slot_device - destructor //------------------------------------------------- ekara_cart_slot_device::~ekara_cart_slot_device() { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void ekara_cart_slot_device::device_start() { m_cart = get_card_device(); } //------------------------------------------------- // EKARA PCB //------------------------------------------------- struct ekara_slot { int pcb_id; const char *slot_option; }; // Here, we take the feature attribute from .xml (i.e. the PCB name) and we assign a unique ID to it static const ekara_slot slot_list[] = { { EKARA_PLAIN, "plain" }, { EKARA_I2C_BASE, "i2c_base" }, { EKARA_I2C_24C08, "rom_24c08" }, { EKARA_I2C_24LC04, "rom_24lc04" }, { EKARA_I2C_24LC02, "rom_24lc02" }, }; static int ekara_get_pcb_id(const char *slot) { for (auto & elem : slot_list) { if (!strcmp(elem.slot_option, slot)) return elem.pcb_id; } return 0; } static const char *ekara_get_slot(int type) { for (auto & elem : slot_list) { if (elem.pcb_id == type) return elem.slot_option; } return "plain"; } /*------------------------------------------------- call load -------------------------------------------------*/ std::pair ekara_cart_slot_device::call_load() { if (m_cart) { uint32_t const len = !loaded_through_softlist() ? length() : get_software_region_length("rom"); m_cart->rom_alloc(len); uint8_t *const ROM = m_cart->get_rom_base(); if (!loaded_through_softlist()) fread(ROM, len); else memcpy(ROM, get_software_region("rom"), len); if (!loaded_through_softlist()) { // attempt to detect cart type without softlist assistance m_type = get_cart_type(ROM, len); } else { // or for softlist loading, use the type specified const char *pcb_name = get_feature("slot"); if (pcb_name) m_type = ekara_get_pcb_id(pcb_name); } } return std::make_pair(std::error_condition(), std::string()); } /*------------------------------------------------- get_cart_type - code to detect cart type from fullpath -------------------------------------------------*/ int ekara_cart_slot_device::get_cart_type(const uint8_t *ROM, uint32_t len) { // without code analysis we have no way of knowing. int type = EKARA_PLAIN; return type; } /*------------------------------------------------- get default card software -------------------------------------------------*/ std::string ekara_cart_slot_device::get_default_card_software(get_default_card_software_hook &hook) const { if (hook.image_file()) { uint64_t len; hook.image_file()->length(len); // FIXME: check error return, guard against excessively large files std::vector rom(len); /*auto const [err, actual] =*/ read(*hook.image_file(), &rom[0], len); // FIXME: check error return or read returning short int const type = get_cart_type(&rom[0], len); char const *const slot_string = ekara_get_slot(type); //printf("type: %s\n", slot_string); return std::string(slot_string); } return software_get_default_slot("plain"); } /*------------------------------------------------- read -------------------------------------------------*/ uint8_t ekara_cart_slot_device::read_cart(offs_t offset) { return m_cart->read_cart(offset); } /*------------------------------------------------- write -------------------------------------------------*/ void ekara_cart_slot_device::write_cart(offs_t offset, uint8_t data) { m_cart->write_cart(offset, data); } /*------------------------------------------------- read extra -------------------------------------------------*/ uint8_t ekara_cart_slot_device::read_extra(offs_t offset) { return m_cart->read_extra(offset); } /*------------------------------------------------- write extra -------------------------------------------------*/ void ekara_cart_slot_device::write_extra(offs_t offset, uint8_t data) { m_cart->write_extra(offset, data); } /*------------------------------------------------- write control -------------------------------------------------*/ void ekara_cart_slot_device::write_bus_control(offs_t offset, uint8_t data) { m_cart->write_bus_control(offset, data); } bool ekara_cart_slot_device::is_read_access_not_rom(void) { return m_cart->is_read_access_not_rom(); } bool ekara_cart_slot_device::is_write_access_not_rom(void) { return m_cart->is_write_access_not_rom(); } /*------------------------------------------------- direct seeprom access (popira2, gc0010) -------------------------------------------------*/ void ekara_cart_slot_device::write_sda(int state) { m_cart->write_sda(state); } void ekara_cart_slot_device::write_scl(int state) { m_cart->write_scl(state); } int ekara_cart_slot_device::read_sda() { return m_cart->read_sda(); }