// license:BSD-3-Clause // copyright-holders:Fabio Priuli /*********************************************************************************************************** V-Tech CreatiVision cart emulation (through slot devices) ***********************************************************************************************************/ #include "emu.h" #include "slot.h" //************************************************************************** // GLOBAL VARIABLES //************************************************************************** DEFINE_DEVICE_TYPE(CRVISION_CART_SLOT, crvision_cart_slot_device, "crvision_cart_slot", "CreatiVision Cartridge Slot") //************************************************************************** // CreatiVision Cartridges Interface //************************************************************************** //------------------------------------------------- // device_crvision_cart_interface - constructor //------------------------------------------------- device_crvision_cart_interface::device_crvision_cart_interface(const machine_config &mconfig, device_t &device) : device_interface(device, "crvisioncart"), m_rom(nullptr), m_rom_size(0) { } //------------------------------------------------- // ~device_crvision_cart_interface - destructor //------------------------------------------------- device_crvision_cart_interface::~device_crvision_cart_interface() { } //------------------------------------------------- // rom_alloc - alloc the space for the cart //------------------------------------------------- void device_crvision_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_LITTLE)->base(); m_rom_size = size; } } //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // crvision_cart_slot_device - constructor //------------------------------------------------- crvision_cart_slot_device::crvision_cart_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock) : device_t(mconfig, CRVISION_CART_SLOT, tag, owner, clock), device_cartrom_image_interface(mconfig, *this), device_single_card_slot_interface(mconfig, *this), m_type(CRV_4K), m_cart(nullptr) { } //------------------------------------------------- // crvision_cart_slot_device - destructor //------------------------------------------------- crvision_cart_slot_device::~crvision_cart_slot_device() { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void crvision_cart_slot_device::device_start() { m_cart = get_card_device(); } //------------------------------------------------- // APF PCB //------------------------------------------------- struct crvision_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 crvision_slot slot_list[] = { { CRV_4K, "crv_rom4k" }, { CRV_6K, "crv_rom6k" }, { CRV_8K, "crv_rom8k" }, { CRV_10K, "crv_rom10k" }, { CRV_12K, "crv_rom12k" }, { CRV_16K, "crv_rom16k" }, { CRV_18K, "crv_rom18k" } }; static int crvision_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 *crvision_get_slot(int type) { for (auto & elem : slot_list) { if (elem.pcb_id == type) return elem.slot_option; } return "crv_rom4k"; } /*------------------------------------------------- call load -------------------------------------------------*/ image_init_result crvision_cart_slot_device::call_load() { if (m_cart) { uint32_t size = !loaded_through_softlist() ? length() : get_software_region_length("rom"); if (size > 0x4800) { seterror(image_error::INVALIDIMAGE, "Image extends beyond the expected size for an APF cart"); return image_init_result::FAIL; } m_cart->rom_alloc(size); 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 = CRV_4K; switch (size) { case 0x4800: m_type = CRV_18K; break; case 0x4000: m_type = CRV_16K; break; case 0x3000: m_type = CRV_12K; break; case 0x2800: m_type = CRV_10K; break; case 0x2000: m_type = CRV_8K; break; case 0x1800: m_type = CRV_6K; break; case 0x1000: default: break; } } else { const char *pcb_name = get_feature("slot"); if (pcb_name) m_type = crvision_get_pcb_id(pcb_name); } printf("Type: %s\n", crvision_get_slot(m_type)); return image_init_result::PASS; } return image_init_result::PASS; } /*------------------------------------------------- get default card software -------------------------------------------------*/ std::string crvision_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 int type = CRV_4K; switch (size) { case 0x4800: type = CRV_18K; break; case 0x4000: type = CRV_16K; break; case 0x3000: type = CRV_12K; break; case 0x2800: type = CRV_10K; break; case 0x2000: type = CRV_8K; break; case 0x1800: type = CRV_6K; break; case 0x1000: default: break; } char const *const slot_string = crvision_get_slot(type); //printf("type: %s\n", slot_string); return std::string(slot_string); } return software_get_default_slot("crv_rom4k"); } /*------------------------------------------------- read_rom -------------------------------------------------*/ uint8_t crvision_cart_slot_device::read_rom40(offs_t offset) { if (m_cart) return m_cart->read_rom40(offset); else return 0xff; } uint8_t crvision_cart_slot_device::read_rom80(offs_t offset) { if (m_cart) return m_cart->read_rom80(offset); else return 0xff; }