// license:BSD-3-Clause // copyright-holders:Fabio Priuli /*********************************************************************************************************** APF Imagination / M-1000 cart emulation (through slot devices) ***********************************************************************************************************/ #include "emu.h" #include "slot.h" //************************************************************************** // GLOBAL VARIABLES //************************************************************************** DEFINE_DEVICE_TYPE(APF_CART_SLOT, apf_cart_slot_device, "apf_cart_slot", "APF Cartridge Slot") //************************************************************************** // APF Cartridges Interface //************************************************************************** //------------------------------------------------- // device_apf_cart_interface - constructor //------------------------------------------------- device_apf_cart_interface::device_apf_cart_interface(const machine_config &mconfig, device_t &device) : device_interface(device, "apfcart"), m_rom(nullptr), m_rom_size(0) { } //------------------------------------------------- // ~device_apf_cart_interface - destructor //------------------------------------------------- device_apf_cart_interface::~device_apf_cart_interface() { } //------------------------------------------------- // rom_alloc - alloc the space for the cart //------------------------------------------------- void device_apf_cart_interface::rom_alloc(uint32_t size, const char *tag) { if (m_rom == nullptr) { m_rom = device().machine().memory().region_alloc(std::string(tag).append(APFSLOT_ROM_REGION_TAG).c_str(), size, 1, ENDIANNESS_LITTLE)->base(); m_rom_size = size; } } //------------------------------------------------- // ram_alloc - alloc the space for the ram //------------------------------------------------- void device_apf_cart_interface::ram_alloc(uint32_t size) { m_ram.resize(size); } //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // apf_cart_slot_device - constructor //------------------------------------------------- apf_cart_slot_device::apf_cart_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : device_t(mconfig, APF_CART_SLOT, tag, owner, clock), device_cartrom_image_interface(mconfig, *this), device_single_card_slot_interface(mconfig, *this), m_type(APF_STD), m_cart(nullptr) { } //------------------------------------------------- // apf_cart_slot_device - destructor //------------------------------------------------- apf_cart_slot_device::~apf_cart_slot_device() { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void apf_cart_slot_device::device_start() { m_cart = get_card_device(); } //------------------------------------------------- // APF PCB //------------------------------------------------- struct apf_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 apf_slot slot_list[] = { { APF_STD, "std" }, { APF_BASIC, "basic" }, { APF_SPACEDST, "spacedst" } }; static int apf_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 *apf_get_slot(int type) { for (auto & elem : slot_list) { if (elem.pcb_id == type) return elem.slot_option; } return "std"; } /*------------------------------------------------- call load -------------------------------------------------*/ image_init_result apf_cart_slot_device::call_load() { if (m_cart) { uint32_t size = !loaded_through_softlist() ? length() : get_software_region_length("rom"); if (size > 0x3800) { seterror(image_error::INVALIDIMAGE, "Image extends beyond the expected size for an APF cart"); return image_init_result::FAIL; } m_cart->rom_alloc(size, tag()); if (!loaded_through_softlist()) fread(m_cart->get_rom_base(), size); else memcpy(m_cart->get_rom_base(), get_software_region("rom"), size); if (!loaded_through_softlist()) { m_type = APF_STD; // attempt to identify Space Destroyer, which needs 1K of additional RAM if (size == 0x1800) { m_type = APF_SPACEDST; m_cart->ram_alloc(0x400); } if (size > 0x2000) m_type = APF_BASIC; } else { const char *pcb_name = get_feature("slot"); if (pcb_name) m_type = apf_get_pcb_id(pcb_name); if (get_software_region("ram")) m_cart->ram_alloc(get_software_region_length("ram")); } //printf("Type: %s\n", apf_get_slot(m_type)); return image_init_result::PASS; } return image_init_result::PASS; } /*------------------------------------------------- get default card software -------------------------------------------------*/ std::string apf_cart_slot_device::get_default_card_software(get_default_card_software_hook &hook) const { if (hook.image_file()) { uint64_t size; hook.image_file()->length(size); // FIXME: check error return // attempt to identify Space Destroyer, which needs 1K of additional RAM int type = APF_STD; if (size == 0x1800) type = APF_SPACEDST; if (size > 0x2000) type = APF_BASIC; char const *const slot_string = apf_get_slot(type); //printf("type: %s\n", slot_string); return std::string(slot_string); } return software_get_default_slot("std"); } /*------------------------------------------------- read -------------------------------------------------*/ uint8_t apf_cart_slot_device::read_rom(offs_t offset) { if (m_cart) return m_cart->read_rom(offset); else return 0xff; } /*------------------------------------------------- read -------------------------------------------------*/ uint8_t apf_cart_slot_device::extra_rom(offs_t offset) { if (m_cart) return m_cart->extra_rom(offset); else return 0xff; } /*------------------------------------------------- read -------------------------------------------------*/ uint8_t apf_cart_slot_device::read_ram(offs_t offset) { if (m_cart) return m_cart->read_ram(offset); else return 0xff; } /*------------------------------------------------- write -------------------------------------------------*/ void apf_cart_slot_device::write_ram(offs_t offset, uint8_t data) { if (m_cart) m_cart->write_ram(offset, data); }