// license:BSD-3-Clause // copyright-holders:etabeta /*********************************************************************************************************** Bally Astrocade cart emulation (through slot devices) ***********************************************************************************************************/ #include "emu.h" #include "slot.h" //************************************************************************** // GLOBAL VARIABLES //************************************************************************** const device_type ASTROCADE_CART_SLOT = &device_creator; //************************************************************************** // Astrocade Cartridges Interface //************************************************************************** //------------------------------------------------- // device_astrocade_cart_interface - constructor //------------------------------------------------- device_astrocade_cart_interface::device_astrocade_cart_interface(const machine_config &mconfig, device_t &device) : device_slot_card_interface(mconfig, device), m_rom(NULL), m_rom_size(0) { } //------------------------------------------------- // ~device_astrocade_cart_interface - destructor //------------------------------------------------- device_astrocade_cart_interface::~device_astrocade_cart_interface() { } //------------------------------------------------- // rom_alloc - alloc the space for the cart //------------------------------------------------- void device_astrocade_cart_interface::rom_alloc(UINT32 size, const char *tag) { if (m_rom == NULL) { astring tempstring(tag); tempstring.cat(ASTROCADESLOT_ROM_REGION_TAG); m_rom = device().machine().memory().region_alloc(tempstring, size, 1, ENDIANNESS_LITTLE)->base(); m_rom_size = size; } } //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // astrocade_cart_slot_device - constructor //------------------------------------------------- astrocade_cart_slot_device::astrocade_cart_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : device_t(mconfig, ASTROCADE_CART_SLOT, "Bally Astrocade Cartridge Slot", tag, owner, clock, "astrocade_cart_slot", __FILE__), device_image_interface(mconfig, *this), device_slot_interface(mconfig, *this), m_type(ASTROCADE_STD) { } //------------------------------------------------- // astrocade_cart_slot_device - destructor //------------------------------------------------- astrocade_cart_slot_device::~astrocade_cart_slot_device() { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void astrocade_cart_slot_device::device_start() { m_cart = dynamic_cast(get_card_device()); } //------------------------------------------------- // device_config_complete - perform any // operations now that the configuration is // complete //------------------------------------------------- void astrocade_cart_slot_device::device_config_complete() { // set brief and instance name update_names(); } //------------------------------------------------- // ASTROCADE PCB //------------------------------------------------- struct astrocade_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 astrocade_slot slot_list[] = { { ASTROCADE_STD, "rom" }, { ASTROCADE_256K, "rom_256k" }, { ASTROCADE_512K, "rom_512k" } }; static int astrocade_get_pcb_id(const char *slot) { for (int i = 0; i < ARRAY_LENGTH(slot_list); i++) { if (!core_stricmp(slot_list[i].slot_option, slot)) return slot_list[i].pcb_id; } return 0; } static const char *astrocade_get_slot(int type) { for (int i = 0; i < ARRAY_LENGTH(slot_list); i++) { if (slot_list[i].pcb_id == type) return slot_list[i].slot_option; } return "std"; } /*------------------------------------------------- call load -------------------------------------------------*/ bool astrocade_cart_slot_device::call_load() { if (m_cart) { UINT32 size = (software_entry() == NULL) ? length() : get_software_region_length("rom"); m_cart->rom_alloc(size, tag()); if (software_entry() == NULL) fread(m_cart->get_rom_base(), size); else memcpy(m_cart->get_rom_base(), get_software_region("rom"), size); if (software_entry() == NULL) { m_type = ASTROCADE_STD; if (size == 0x40000) m_type = ASTROCADE_256K; if (size == 0x80000) m_type = ASTROCADE_512K; } else { const char *pcb_name = get_feature("slot"); if (pcb_name) m_type = astrocade_get_pcb_id(pcb_name); } //printf("Type: %s\n", astrocade_get_slot(m_type)); return IMAGE_INIT_PASS; } return IMAGE_INIT_PASS; } /*------------------------------------------------- call softlist load -------------------------------------------------*/ bool astrocade_cart_slot_device::call_softlist_load(software_list_device &swlist, const char *swname, const rom_entry *start_entry) { load_software_part_region(*this, swlist, swname, start_entry); return TRUE; } /*------------------------------------------------- get default card software -------------------------------------------------*/ void astrocade_cart_slot_device::get_default_card_software(astring &result) { if (open_image_file(mconfig().options())) { const char *slot_string = "rom"; UINT32 size = core_fsize(m_file); int type = ASTROCADE_STD; if (size == 0x40000) type = ASTROCADE_256K; if (size == 0x80000) type = ASTROCADE_512K; slot_string = astrocade_get_slot(type); //printf("type: %s\n", slot_string); clear(); result.cpy(slot_string); return; } software_get_default_slot(result, "rom"); } /*------------------------------------------------- read -------------------------------------------------*/ READ8_MEMBER(astrocade_cart_slot_device::read_rom) { if (m_cart) return m_cart->read_rom(space, offset); else return 0xff; }