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Diffstat (limited to 'src/devices/bus/arcadia/slot.c')
-rw-r--r-- | src/devices/bus/arcadia/slot.c | 260 |
1 files changed, 260 insertions, 0 deletions
diff --git a/src/devices/bus/arcadia/slot.c b/src/devices/bus/arcadia/slot.c new file mode 100644 index 00000000000..b93e7fd211c --- /dev/null +++ b/src/devices/bus/arcadia/slot.c @@ -0,0 +1,260 @@ +// license:BSD-3-Clause +// copyright-holders:Fabio Priuli +/*********************************************************************************************************** + + Emerson Arcadia 2001 (and clones) cart emulation + (through slot devices) + + ***********************************************************************************************************/ + + +#include "emu.h" +#include "slot.h" + +//************************************************************************** +// GLOBAL VARIABLES +//************************************************************************** + +const device_type EA2001_CART_SLOT = &device_creator<arcadia_cart_slot_device>; + +//************************************************************************** +// ARCADIA Cartridges Interface +//************************************************************************** + +//------------------------------------------------- +// device_arcadia_cart_interface - constructor +//------------------------------------------------- + +device_arcadia_cart_interface::device_arcadia_cart_interface(const machine_config &mconfig, device_t &device) + : device_slot_card_interface(mconfig, device), + m_rom(NULL), + m_rom_size(0) +{ +} + + +//------------------------------------------------- +// ~device_arcadia_cart_interface - destructor +//------------------------------------------------- + +device_arcadia_cart_interface::~device_arcadia_cart_interface() +{ +} + +//------------------------------------------------- +// rom_alloc - alloc the space for the cart +//------------------------------------------------- + +void device_arcadia_cart_interface::rom_alloc(UINT32 size, const char *tag) +{ + if (m_rom == NULL) + { + m_rom = device().machine().memory().region_alloc(std::string(tag).append(EA2001SLOT_ROM_REGION_TAG).c_str(), size, 1, ENDIANNESS_LITTLE)->base(); + m_rom_size = size; + } +} + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// arcadia_cart_slot_device - constructor +//------------------------------------------------- +arcadia_cart_slot_device::arcadia_cart_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : + device_t(mconfig, EA2001_CART_SLOT, "Emerson Arcadia Cartridge Slot", tag, owner, clock, "arcadia_cart_slot", __FILE__), + device_image_interface(mconfig, *this), + device_slot_interface(mconfig, *this), + m_type(ARCADIA_STD) +{ +} + + +//------------------------------------------------- +// arcadia_cart_slot_device - destructor +//------------------------------------------------- + +arcadia_cart_slot_device::~arcadia_cart_slot_device() +{ +} + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void arcadia_cart_slot_device::device_start() +{ + m_cart = dynamic_cast<device_arcadia_cart_interface *>(get_card_device()); +} + +//------------------------------------------------- +// device_config_complete - perform any +// operations now that the configuration is +// complete +//------------------------------------------------- + +void arcadia_cart_slot_device::device_config_complete() +{ + // set brief and instance name + update_names(); +} + + +//------------------------------------------------- +// ARCADIA PCB +//------------------------------------------------- + +struct arcadia_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 arcadia_slot slot_list[] = +{ + { ARCADIA_STD, "std" }, + { ARCADIA_GOLF, "golf" } +}; + +static int arcadia_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; +} + +#if 0 +static const char *arcadia_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"; +} +#endif + +/*------------------------------------------------- + call load + -------------------------------------------------*/ + +bool arcadia_cart_slot_device::call_load() +{ + if (m_cart) + { + UINT32 len = (software_entry() == NULL) ? length() : get_software_region_length("rom"); + + m_cart->rom_alloc(len, tag()); + + if (software_entry() == NULL) + fread(m_cart->get_rom_base(), len); + else + memcpy(m_cart->get_rom_base(), get_software_region("rom"), len); + + if (software_entry() == NULL) + { + // we need to identify Golf! + m_type = ARCADIA_STD; + + +// the patch below is kept in case it could be used to identify golf cart from fullpath +#if 0 + // this is a testpatch for the golf cartridge + // so to make it work on a standard arcadia 2001 + // cart (i.e. mapping the hi 2K to $2000) + // not enough yet (some pointers stored as data?) + patch[]= { + // addr, orig. value, patched value + { 0x0077, 0x40, 0x20 }, + { 0x011e, 0x40, 0x20 }, + { 0x0348, 0x40, 0x20 }, + { 0x03be, 0x40, 0x20 }, + { 0x04ce, 0x40, 0x20 }, + { 0x04da, 0x40, 0x20 }, + { 0x0562, 0x42, 0x22 }, + { 0x0617, 0x40, 0x20 }, + { 0x0822, 0x40, 0x20 }, + { 0x095e, 0x42, 0x22 }, + { 0x09d3, 0x42, 0x22 }, + { 0x0bb0, 0x42, 0x22 }, + { 0x0efb, 0x40, 0x20 }, + { 0x0ec1, 0x43, 0x23 }, + { 0x0f00, 0x40, 0x20 }, + { 0x0f12, 0x40, 0x20 }, + { 0x0ff5, 0x43, 0x23 }, + { 0x0ff7, 0x41, 0x21 }, + { 0x0ff9, 0x40, 0x20 }, + { 0x0ffb, 0x41, 0x21 }, + { 0x20ec, 0x42, 0x22 } + }; +#endif + + } + else + { + const char *pcb_name = get_feature("slot"); + if (pcb_name) + m_type = arcadia_get_pcb_id(pcb_name); + } + + //printf("Type: %s\n", arcadia_get_slot(m_type)); + + return IMAGE_INIT_PASS; + } + + return IMAGE_INIT_PASS; +} + + +/*------------------------------------------------- + call softlist load + -------------------------------------------------*/ + +bool arcadia_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 arcadia_cart_slot_device::get_default_card_software(std::string &result) +{ + software_get_default_slot(result, "std"); +} + +/*------------------------------------------------- + read + -------------------------------------------------*/ + +READ8_MEMBER(arcadia_cart_slot_device::read_rom) +{ + if (m_cart) + return m_cart->read_rom(space, offset); + else + return 0xff; +} + +/*------------------------------------------------- + write + -------------------------------------------------*/ + +READ8_MEMBER(arcadia_cart_slot_device::extra_rom) +{ + if (m_cart) + return m_cart->extra_rom(space, offset); + else + return 0xff; +} |