// license:BSD-3-Clause // copyright-holders:etabeta /*********************************************************************************************************** GCE Vectrex cart emulation (through slot devices) ***********************************************************************************************************/ #include "emu.h" #include "slot.h" //************************************************************************** // GLOBAL VARIABLES //************************************************************************** const device_type VECTREX_CART_SLOT = &device_creator; //************************************************************************** // Vectrex Cartridges Interface //************************************************************************** //------------------------------------------------- // device_vectrex_cart_interface - constructor //------------------------------------------------- device_vectrex_cart_interface::device_vectrex_cart_interface(const machine_config &mconfig, device_t &device) : device_slot_card_interface(mconfig, device), m_rom(NULL), m_rom_size(0) { } //------------------------------------------------- // ~device_vectrex_cart_interface - destructor //------------------------------------------------- device_vectrex_cart_interface::~device_vectrex_cart_interface() { } //------------------------------------------------- // rom_alloc - alloc the space for the cart //------------------------------------------------- void device_vectrex_cart_interface::rom_alloc(UINT32 size, const char *tag) { if (m_rom == NULL) { astring tempstring(tag); tempstring.cat(VECSLOT_ROM_REGION_TAG); m_rom = device().machine().memory().region_alloc(tempstring, size, 1, ENDIANNESS_LITTLE)->base(); m_rom_size = size; } } //************************************************************************** // LIVE DEVICE //************************************************************************** //------------------------------------------------- // vectrex_cart_slot_device - constructor //------------------------------------------------- vectrex_cart_slot_device::vectrex_cart_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : device_t(mconfig, VECTREX_CART_SLOT, "GCE Vectrex Cartridge Slot", tag, owner, clock, "vectrex_cart_slot", __FILE__), device_image_interface(mconfig, *this), device_slot_interface(mconfig, *this), m_type(VECTREX_STD), m_vec3d(VEC3D_NONE) { } //------------------------------------------------- // vectrex_cart_slot_device - destructor //------------------------------------------------- vectrex_cart_slot_device::~vectrex_cart_slot_device() { } //------------------------------------------------- // device_start - device-specific startup //------------------------------------------------- void vectrex_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 vectrex_cart_slot_device::device_config_complete() { // set brief and instance name update_names(); } //------------------------------------------------- // Vectrex PCB //------------------------------------------------- struct vectrex_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 vectrex_slot slot_list[] = { { VECTREX_STD, "vec_rom" }, { VECTREX_64K, "vec_rom64k" }, { VECTREX_SRAM, "vec_sram" } }; #if 0 static int vectrex_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; } #endif static const char *vectrex_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 "vec_rom"; } /*------------------------------------------------- call load -------------------------------------------------*/ bool vectrex_cart_slot_device::call_load() { if (m_cart) { UINT32 size = (software_entry() == NULL) ? length() : get_software_region_length("rom"); UINT8 *ROM; if (size > 0x10000) { seterror(IMAGE_ERROR_UNSPECIFIED, "Unsupported cartridge size"); return IMAGE_INIT_FAIL; } m_cart->rom_alloc((size < 0x1000) ? 0x1000 : size, tag()); ROM = m_cart->get_rom_base(); if (software_entry() == NULL) fread(ROM, size); else memcpy(ROM, get_software_region("rom"), size); // Verify the file is accepted by the Vectrex bios if (memcmp(ROM, "g GCE", 5)) { seterror(IMAGE_ERROR_UNSPECIFIED, "Invalid image"); return IMAGE_INIT_FAIL; } // determine type m_type = VECTREX_STD; if (!memcmp(ROM + 0x06, "SRAM", 4)) m_type = VECTREX_SRAM; if (size > 0x8000) m_type = VECTREX_64K; //printf("Type: %s\n", vectrex_get_slot(m_type)); // determine 3D setup (to help video setup at machine_start) if (!memcmp(ROM + 0x11, "NARROW", 6) && (ROM[0x39] == 0x0c)) m_vec3d = VEC3D_NARROW; if (!memcmp(ROM + 0x11, "CRAZY COASTER", 13)) m_vec3d = VEC3D_CCOAST; if (!memcmp(ROM + 0x11, "3D MINE STORM", 13)) m_vec3d = VEC3D_MINEST; return IMAGE_INIT_PASS; } return IMAGE_INIT_PASS; } /*------------------------------------------------- call softlist load -------------------------------------------------*/ bool vectrex_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 vectrex_cart_slot_device::get_default_card_software(astring &result) { if (open_image_file(mconfig().options())) { const char *slot_string = "vec_rom"; UINT32 size = core_fsize(m_file); dynamic_buffer rom(size); int type = VECTREX_STD; core_fread(m_file, rom, size); if (!memcmp(rom + 0x06, "SRAM", 4)) type = VECTREX_SRAM; if (size > 0x8000) type = VECTREX_64K; slot_string = vectrex_get_slot(type); //printf("type: %s\n", slot_string); clear(); result.cpy(slot_string); return; } software_get_default_slot(result, "vec_rom"); } /*------------------------------------------------- read_rom -------------------------------------------------*/ READ8_MEMBER(vectrex_cart_slot_device::read_rom) { if (m_cart) return m_cart->read_rom(space, offset); else return 0xff; } /*------------------------------------------------- write_ram -------------------------------------------------*/ WRITE8_MEMBER(vectrex_cart_slot_device::write_ram) { if (m_cart) m_cart->write_ram(space, offset, data); } /*------------------------------------------------- write_bank -------------------------------------------------*/ WRITE8_MEMBER(vectrex_cart_slot_device::write_bank) { if (m_cart) m_cart->write_bank(space, offset, data); }