diff options
author | 2014-10-10 15:28:46 +0000 | |
---|---|---|
committer | 2014-10-10 15:28:46 +0000 | |
commit | f0fad04eb68b545e6075f3b65d6d4db8c03e4025 (patch) | |
tree | e1a52b526fd0a7e306fd5cfe9adac62976555823 /src/emu/bus/vectrex/slot.c | |
parent | 4de494250b26fc201171ac3b2b3c24f25ac08aab (diff) |
(MESS) converted vectrex and crvision to use slot devices for
their carts. nw.
(with these, we are done for the moment with new slot devices for carts...)
Diffstat (limited to 'src/emu/bus/vectrex/slot.c')
-rw-r--r-- | src/emu/bus/vectrex/slot.c | 280 |
1 files changed, 280 insertions, 0 deletions
diff --git a/src/emu/bus/vectrex/slot.c b/src/emu/bus/vectrex/slot.c new file mode 100644 index 00000000000..b44da803f74 --- /dev/null +++ b/src/emu/bus/vectrex/slot.c @@ -0,0 +1,280 @@ +/*********************************************************************************************************** + + GCE Vectrex cart emulation + (through slot devices) + + ***********************************************************************************************************/ + + +#include "emu.h" +#include "slot.h" + +//************************************************************************** +// GLOBAL VARIABLES +//************************************************************************** + +const device_type VECTREX_CART_SLOT = &device_creator<vectrex_cart_slot_device>; + +//************************************************************************** +// 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<device_vectrex_cart_interface *>(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); +} + + |