diff options
Diffstat (limited to 'src/devices/bus/pce/pce_slot.cpp')
-rw-r--r-- | src/devices/bus/pce/pce_slot.cpp | 68 |
1 files changed, 22 insertions, 46 deletions
diff --git a/src/devices/bus/pce/pce_slot.cpp b/src/devices/bus/pce/pce_slot.cpp index 8f52410a1a3..2a6d3dd3290 100644 --- a/src/devices/bus/pce/pce_slot.cpp +++ b/src/devices/bus/pce/pce_slot.cpp @@ -48,11 +48,11 @@ device_pce_cart_interface::~device_pce_cart_interface() // rom_alloc - alloc the space for the cart //------------------------------------------------- -void device_pce_cart_interface::rom_alloc(uint32_t size, const char *tag) +void device_pce_cart_interface::rom_alloc(uint32_t size) { if (m_rom == nullptr) { - m_rom = device().machine().memory().region_alloc(std::string(tag).append(PCESLOT_ROM_REGION_TAG).c_str(), size, 1, ENDIANNESS_LITTLE)->base(); + m_rom = device().machine().memory().region_alloc(device().subtag("^cart:rom"), size, 1, ENDIANNESS_LITTLE)->base(); m_rom_size = size; } } @@ -136,10 +136,12 @@ void device_pce_cart_interface::rom_map_setup(uint32_t size) //------------------------------------------------- pce_cart_slot_device::pce_cart_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : device_t(mconfig, PCE_CART_SLOT, tag, owner, clock), - device_image_interface(mconfig, *this), + device_cartrom_image_interface(mconfig, *this), device_single_card_slot_interface<device_pce_cart_interface>(mconfig, *this), m_interface("pce_cart"), - m_type(PCE_STD), m_cart(nullptr) + m_type(PCE_STD), + m_cart(nullptr), + m_address_space(*this, finder_base::DUMMY_TAG, -1, 8) { } @@ -181,6 +183,8 @@ static const pce_slot slot_list[] = { PCE_POPULOUS, "populous" }, { PCE_SF2, "sf2" }, { PCE_TENNOKOE, "tennokoe" }, + { PCE_ACARD_DUO, "acard_duo" }, + { PCE_ACARD_PRO, "acard_pro" }, }; static int pce_get_pcb_id(const char *slot) @@ -210,43 +214,40 @@ static const char *pce_get_slot(int type) call load -------------------------------------------------*/ -image_init_result pce_cart_slot_device::call_load() +std::pair<std::error_condition, std::string> pce_cart_slot_device::call_load() { if (m_cart) { - uint32_t offset; uint32_t len = !loaded_through_softlist() ? length() : get_software_region_length("rom"); - uint8_t *ROM; // From fullpath, check for presence of a header and skip it if (!loaded_through_softlist() && (len % 0x4000) == 512) { - logerror("Rom-header found, skipping\n"); - offset = 512; + logerror("ROM header found, skipping\n"); + uint32_t const offset = 512; len -= offset; fseek(offset, SEEK_SET); } - m_cart->rom_alloc(len, tag()); - ROM = m_cart->get_rom_base(); + m_cart->rom_alloc(len); + uint8_t *const ROM = m_cart->get_rom_base(); if (!loaded_through_softlist()) fread(ROM, len); else memcpy(ROM, get_software_region("rom"), len); - // check for encryption (US carts) + // check for bit-reversal (US carts) if (ROM[0x1fff] < 0xe0) { - uint8_t decrypted[256]; - - /* Initialize decryption table */ + // Initialize unscrambling table + uint8_t unscrambled[256]; for (int i = 0; i < 256; i++) - decrypted[i] = ((i & 0x01) << 7) | ((i & 0x02) << 5) | ((i & 0x04) << 3) | ((i & 0x08) << 1) | ((i & 0x10) >> 1) | ((i & 0x20 ) >> 3) | ((i & 0x40) >> 5) | ((i & 0x80) >> 7); + unscrambled[i] = bitswap<8>(i, 0, 1, 2, 3, 4, 5, 6, 7); - /* Decrypt ROM image */ + // Unscramble ROM image for (int i = 0; i < len; i++) - ROM[i] = decrypted[ROM[i]]; + ROM[i] = unscrambled[ROM[i]]; } m_cart->rom_map_setup(len); @@ -263,13 +264,11 @@ image_init_result pce_cart_slot_device::call_load() if (m_type == PCE_POPULOUS) m_cart->ram_alloc(0x8000); - if (m_type == PCE_CDSYS3J || m_type == PCE_CDSYS3U) - m_cart->ram_alloc(0x30000); - return image_init_result::PASS; + m_cart->install_memory_handlers(*m_address_space); } - return image_init_result::PASS; + return std::make_pair(std::error_condition(), std::string()); } @@ -325,8 +324,7 @@ std::string pce_cart_slot_device::get_default_card_software(get_default_card_sof hook.image_file()->length(len); // FIXME: check error return, guard against excessively large files std::vector<uint8_t> rom(len); - size_t actual; - hook.image_file()->read(&rom[0], len, actual); // FIXME: check error return or read returning short + read(*hook.image_file(), &rom[0], len); // FIXME: check error return or read returning short int const type = get_cart_type(&rom[0], len); char const *const slot_string = pce_get_slot(type); @@ -338,25 +336,3 @@ std::string pce_cart_slot_device::get_default_card_software(get_default_card_sof return software_get_default_slot("rom"); } - -/*------------------------------------------------- - read - -------------------------------------------------*/ - -uint8_t pce_cart_slot_device::read_cart(offs_t offset) -{ - if (m_cart) - return m_cart->read_cart(offset); - else - return 0xff; -} - -/*------------------------------------------------- - write - -------------------------------------------------*/ - -void pce_cart_slot_device::write_cart(offs_t offset, uint8_t data) -{ - if (m_cart) - m_cart->write_cart(offset, data); -} |