diff options
Diffstat (limited to 'src/devices/machine/smartmed.cpp')
-rw-r--r-- | src/devices/machine/smartmed.cpp | 561 |
1 files changed, 46 insertions, 515 deletions
diff --git a/src/devices/machine/smartmed.cpp b/src/devices/machine/smartmed.cpp index 1e7dc925ce0..75473c8922d 100644 --- a/src/devices/machine/smartmed.cpp +++ b/src/devices/machine/smartmed.cpp @@ -14,6 +14,7 @@ TODO: * support multi-plane mode? * use HD-format images instead of our experimental custom format? + * better separation of SmartMedia image and NAND flash device Raphael Nabet 2004 */ @@ -21,6 +22,10 @@ #include "emu.h" #include "smartmed.h" +#include "softlist_dev.h" + +#include <tuple> + namespace { @@ -35,14 +40,6 @@ inline uint32_t get_UINT32BE(UINT32BE word) return (word.bytes[0] << 24) | (word.bytes[1] << 16) | (word.bytes[2] << 8) | word.bytes[3]; } -[[maybe_unused]] inline void set_UINT32BE(UINT32BE *word, uint32_t data) -{ - word->bytes[0] = (data >> 24) & 0xff; - word->bytes[1] = (data >> 16) & 0xff; - word->bytes[2] = (data >> 8) & 0xff; - word->bytes[3] = data & 0xff; -} - /* SmartMedia image header */ struct SM_disk_image_header { @@ -69,77 +66,28 @@ enum } // anonymous namespace - -DEFINE_DEVICE_TYPE(NAND, nand_device, "nand", "NAND Flash Memory") - -nand_device::nand_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) - : nand_device(mconfig, NAND, tag, owner, clock) -{ -} - -nand_device::nand_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock) - : device_t(mconfig, type, tag, owner, clock) - , m_page_data_size(0) - , m_page_total_size(0) - , m_num_pages(0) - , m_log2_pages_per_block(0) - , m_pagereg(nullptr) - , m_id_len(0) - , m_col_address_cycles(0) - , m_row_address_cycles(0) - , m_sequential_row_read(0) - , m_write_rnb(*this) -{ - memset(m_id, 0, sizeof(m_id)); -} - -/* - Init a SmartMedia image -*/ -void nand_device::device_start() -{ - m_feeprom_data = nullptr; - m_data_uid_ptr = nullptr; - m_mode = SM_M_INIT; - m_pointer_mode = SM_PM_A; - m_page_addr = 0; - m_byte_addr = 0; - m_status = 0xC0; - m_accumulated_status = 0; - m_mp_opcode = 0; - m_mode_3065 = 0; - m_pagereg = std::make_unique<uint8_t[]>(m_page_total_size); - -#ifdef SMARTMEDIA_IMAGE_SAVE - m_image_format = 0; -#endif - m_write_rnb.resolve_safe(); -} - /* Load a SmartMedia image */ -image_init_result smartmedia_image_device::smartmedia_format_1() +std::error_condition smartmedia_image_device::smartmedia_format_1() { + std::error_condition err; + size_t bytes_read; + SM_disk_image_header custom_header; - const int bytes_read = fread(&custom_header, sizeof(custom_header)); - if (bytes_read != sizeof(custom_header)) - { - return image_init_result::FAIL; - } + std::tie(err, bytes_read) = read(image_core_file(), &custom_header, sizeof(custom_header)); + if (err || (bytes_read != sizeof(custom_header))) + return err ? err : std::errc::io_error; if (custom_header.version > 1) - { - return image_init_result::FAIL; - } + return image_error::INVALIDIMAGE; m_page_data_size = get_UINT32BE(custom_header.page_data_size); m_page_total_size = get_UINT32BE(custom_header.page_total_size); m_num_pages = get_UINT32BE(custom_header.num_pages); m_log2_pages_per_block = get_UINT32BE(custom_header.log2_pages_per_block); - m_feeprom_data_alloc = std::make_unique<uint8_t[]>(m_page_total_size*m_num_pages); - m_feeprom_data = &m_feeprom_data_alloc[0]; + m_feeprom_data = std::make_unique<uint8_t[]>(m_page_total_size*m_num_pages); m_data_uid_ptr = std::make_unique<uint8_t[]>(256 + 16); m_mode = SM_M_INIT; m_pointer_mode = SM_PM_A; @@ -169,13 +117,16 @@ image_init_result smartmedia_image_device::smartmedia_format_1() fread(&m_mp_opcode, 1); fread(m_data_uid_ptr.get(), 256 + 16); } - fread(m_feeprom_data, m_page_total_size*m_num_pages); + + std::tie(err, m_feeprom_data, bytes_read) = read(image_core_file(), m_page_total_size * m_num_pages); + if (err || (bytes_read != (m_page_total_size * m_num_pages))) + return err ? err : std::errc::io_error; #ifdef SMARTMEDIA_IMAGE_SAVE m_image_format = 1; #endif - return image_init_result::PASS; + return std::error_condition(); } int smartmedia_image_device::detect_geometry( uint8_t id1, uint8_t id2) @@ -214,28 +165,24 @@ int smartmedia_image_device::detect_geometry( uint8_t id1, uint8_t id2) return result; } -image_init_result smartmedia_image_device::smartmedia_format_2() +std::error_condition smartmedia_image_device::smartmedia_format_2() { + std::error_condition err; + size_t bytes_read; + disk_image_format_2_header custom_header; - const int bytes_read = fread(&custom_header, sizeof(custom_header)); - if (bytes_read != sizeof(custom_header)) - { - return image_init_result::FAIL; - } + std::tie(err, bytes_read) = read(image_core_file(), &custom_header, sizeof(custom_header)); + if (err || (bytes_read != sizeof(custom_header))) + return err ? err : std::errc::io_error; if ((custom_header.data1[0] != 0xEC) && (custom_header.data1[0] != 0x98)) - { - return image_init_result::FAIL; - } + return image_error::INVALIDIMAGE; if (!detect_geometry(custom_header.data1[0], custom_header.data1[1])) - { - return image_init_result::FAIL; - } + return image_error::INVALIDIMAGE; - m_feeprom_data_alloc = std::make_unique<uint8_t[]>(m_page_total_size*m_num_pages); - m_feeprom_data = &m_feeprom_data_alloc[0]; + m_feeprom_data = std::make_unique<uint8_t[]>(m_page_total_size*m_num_pages); m_data_uid_ptr = std::make_unique<uint8_t[]>(256 + 16); m_mode = SM_M_INIT; m_pointer_mode = SM_PM_A; @@ -261,29 +208,30 @@ image_init_result smartmedia_image_device::smartmedia_format_2() } memcpy(m_data_uid_ptr.get() + 256, custom_header.data3, 16); - fread(m_feeprom_data, m_page_total_size*m_num_pages); + std::tie(err, m_feeprom_data, bytes_read) = read(image_core_file(), m_page_total_size * m_num_pages); + if (err || (bytes_read != (m_page_total_size * m_num_pages))) + return err ? err : std::errc::io_error; #ifdef SMARTMEDIA_IMAGE_SAVE m_image_format = 2; #endif - return image_init_result::PASS; + return std::error_condition(); } -image_init_result smartmedia_image_device::call_load() +std::pair<std::error_condition, std::string> smartmedia_image_device::call_load() { - image_init_result result; - uint64_t position; + std::error_condition result; // try format 1 - position = ftell(); + uint64_t const position = ftell(); result = smartmedia_format_1(); - if (result != image_init_result::PASS) + if (result) { // try format 2 fseek(position, SEEK_SET); result = smartmedia_format_2(); } - return result; + return std::make_pair(result, std::string()); } /* @@ -349,434 +297,17 @@ void smartmedia_image_device::call_unload() return; } -int nand_device::is_present() -{ - return m_num_pages != 0; -} - -int nand_device::is_protected() -{ - return (m_status & 0x80) == 0; -} - -int nand_device::is_busy() -{ - return (m_status & 0x40) == 0; -} - -void nand_device::set_data_ptr(void *ptr) -{ - m_feeprom_data = (uint8_t *)ptr; -} - -/* - write a byte to SmartMedia command port -*/ -void nand_device::command_w(uint8_t data) -{ - if (!is_present()) - return; - - switch (data) - { - case 0xff: // Reset - m_mode = SM_M_INIT; - m_pointer_mode = SM_PM_A; - m_status = (m_status & 0x80) | 0x40; - m_accumulated_status = 0; - m_mode_3065 = 0; - if (!m_write_rnb.isnull()) - { - m_write_rnb(0); - m_write_rnb(1); - } - break; - case 0x00: // Read (1st cycle) - m_mode = SM_M_READ; - m_pointer_mode = SM_PM_A; - m_page_addr = 0; - m_addr_load_ptr = 0; - break; - case 0x01: - if (m_page_data_size != 512) - { - logerror("smartmedia: unsupported upper data field select (256-byte pages)\n"); - m_mode = SM_M_INIT; - } - else - { - m_mode = SM_M_READ; - m_pointer_mode = SM_PM_B; - m_page_addr = 0; - m_addr_load_ptr = 0; - } - break; - case 0x50: - if (m_page_data_size > 512) - { - logerror("smartmedia: unsupported spare area select\n"); - m_mode = SM_M_INIT; - } - else - { - m_mode = SM_M_READ; - m_pointer_mode = SM_PM_C; - m_page_addr = 0; - m_addr_load_ptr = 0; - } - break; - case 0x80: // Page Program (1st cycle) - m_mode = SM_M_PROGRAM; - m_page_addr = 0; - m_addr_load_ptr = 0; - m_program_byte_count = 0; - memset(m_pagereg.get(), 0xff, m_page_total_size); - break; - case 0x10: // Page Program (2nd cycle) - case 0x15: - if ((m_mode != SM_M_PROGRAM) && (m_mode != SM_M_RANDOM_DATA_INPUT)) - { - logerror("smartmedia: illegal page program confirm command\n"); - m_mode = SM_M_INIT; - } - else - { - m_status = (m_status & 0x80) | m_accumulated_status; - //logerror( "smartmedia: program, page_addr %08X\n", m_page_addr); - for (int i = 0; i < m_page_total_size; i++) - m_feeprom_data[m_page_addr * m_page_total_size + i] &= m_pagereg[i]; - m_status |= 0x40; - if (data == 0x15) - m_accumulated_status = m_status & 0x1f; - else - m_accumulated_status = 0; - m_mode = SM_M_INIT; - if (!m_write_rnb.isnull()) - { - m_write_rnb(0); - m_write_rnb(1); - } - } - break; - //case 0x11: - // break; - case 0x60: // Block Erase (1st cycle) - m_mode = SM_M_ERASE; - m_page_addr = 0; - m_addr_load_ptr = 0; - break; - case 0xd0: // Block Erase (2nd cycle) - if (m_mode != SM_M_ERASE) - { - logerror("smartmedia: illegal block erase confirm command\n"); - m_mode = SM_M_INIT; - } - else - { - m_status &= 0x80; - memset(m_feeprom_data + ((m_page_addr & (-1 << m_log2_pages_per_block)) * m_page_total_size), 0xFF, (size_t)(1 << m_log2_pages_per_block) * m_page_total_size); - //logerror( "smartmedia: erase, page_addr %08X, offset %08X, length %08X\n", m_page_addr, (m_page_addr & (-1 << m_log2_pages_per_block)) * m_page_total_size, (1 << m_log2_pages_per_block) * m_page_total_size); - m_status |= 0x40; - m_mode = SM_M_INIT; - if (m_pointer_mode == SM_PM_B) - m_pointer_mode = SM_PM_A; - if (!m_write_rnb.isnull()) - { - m_write_rnb(0); - m_write_rnb(1); - } - } - break; - case 0x70: // Read Status - m_mode = SM_M_READSTATUS; - break; - //case 0x71: - // break; - case 0x90: // Read ID - m_mode = SM_M_READID; - m_addr_load_ptr = 0; - break; - //case 0x91: - // break; - case 0x30: // Read (2nd cycle) - if (m_col_address_cycles == 1) - { - m_mode = SM_M_30; - } - else - { - if (m_mode != SM_M_READ) - { - logerror("smartmedia: illegal read 2nd cycle command\n"); - m_mode = SM_M_INIT; - } - else if (m_addr_load_ptr < (m_col_address_cycles + m_row_address_cycles)) - { - logerror("smartmedia: read 2nd cycle, not enough address cycles (actual: %d, expected: %d)\n", m_addr_load_ptr, m_col_address_cycles + m_row_address_cycles); - m_mode = SM_M_INIT; - } - else - { - if (!m_write_rnb.isnull()) - { - m_write_rnb(0); - m_write_rnb(1); - } - } - } - break; - case 0x65: - if (m_mode != SM_M_30) - { - logerror("smartmedia: unexpected address port write\n"); - m_mode = SM_M_INIT; - } - else - { - m_mode_3065 = 1; - } - break; - case 0x05: // Random Data Output (1st cycle) - if ((m_mode != SM_M_READ) && (m_mode != SM_M_RANDOM_DATA_OUTPUT)) - { - logerror("smartmedia: illegal random data output command\n"); - m_mode = SM_M_INIT; - } - else - { - m_mode = SM_M_RANDOM_DATA_OUTPUT; - m_addr_load_ptr = 0; - } - break; - case 0xE0: // Random Data Output (2nd cycle) - if (m_mode != SM_M_RANDOM_DATA_OUTPUT) - { - logerror("smartmedia: illegal random data output confirm command\n"); - m_mode = SM_M_INIT; - } - else - { - // do nothing - } - break; - case 0x85: // Random Data Input - if ((m_mode != SM_M_PROGRAM) && (m_mode != SM_M_RANDOM_DATA_INPUT)) - { - logerror("smartmedia: illegal random data input command\n"); - m_mode = SM_M_INIT; - } - else - { - m_mode = SM_M_RANDOM_DATA_INPUT; - m_addr_load_ptr = 0; - m_program_byte_count = 0; - } - break; - default: - logerror("smartmedia: unsupported command 0x%02x\n", data); - m_mode = SM_M_INIT; - break; - } -} - -/* - write a byte to SmartMedia address port -*/ -void nand_device::address_w(uint8_t data) -{ - if (!is_present()) - return; - - switch (m_mode) - { - case SM_M_INIT: - logerror("smartmedia: unexpected address port write\n"); - break; - case SM_M_READ: - case SM_M_PROGRAM: - if ((m_addr_load_ptr == 0) && (m_col_address_cycles == 1)) - { - switch (m_pointer_mode) - { - case SM_PM_A: - m_byte_addr = data; - break; - case SM_PM_B: - m_byte_addr = data + 256; - m_pointer_mode = SM_PM_A; - break; - case SM_PM_C: - if (!m_mode_3065) - m_byte_addr = (data & 0x0f) + m_page_data_size; - else - m_byte_addr = (data & 0x0f) + 256; - break; - } - } - else - { - if (m_addr_load_ptr < m_col_address_cycles) - { - m_byte_addr &= ~(0xFF << (m_addr_load_ptr * 8)); - m_byte_addr |= (data << (m_addr_load_ptr * 8)); - } - else if (m_addr_load_ptr < m_col_address_cycles + m_row_address_cycles) - { - m_page_addr &= ~(0xFF << ((m_addr_load_ptr - m_col_address_cycles) * 8)); - m_page_addr |= (data << ((m_addr_load_ptr - m_col_address_cycles) * 8)); - } - } - m_addr_load_ptr++; - break; - case SM_M_ERASE: - if (m_addr_load_ptr < m_row_address_cycles) - { - m_page_addr &= ~(0xFF << (m_addr_load_ptr * 8)); - m_page_addr |= (data << (m_addr_load_ptr * 8)); - } - m_addr_load_ptr++; - break; - case SM_M_RANDOM_DATA_INPUT: - case SM_M_RANDOM_DATA_OUTPUT: - if (m_addr_load_ptr < m_col_address_cycles) - { - m_byte_addr &= ~(0xFF << (m_addr_load_ptr * 8)); - m_byte_addr |= (data << (m_addr_load_ptr * 8)); - } - m_addr_load_ptr++; - break; - case SM_M_READSTATUS: - case SM_M_30: - logerror("smartmedia: unexpected address port write\n"); - break; - case SM_M_READID: - if (m_addr_load_ptr == 0) - m_byte_addr = data; - m_addr_load_ptr++; - break; - } -} - -/* - read a byte from SmartMedia data port -*/ -uint8_t nand_device::data_r() -{ - uint8_t reply = 0; - if (!is_present()) - return 0; - - switch (m_mode) - { - case SM_M_INIT: - case SM_M_30: - logerror("smartmedia: unexpected data port read\n"); - break; - case SM_M_READ: - case SM_M_RANDOM_DATA_OUTPUT: - if (!m_mode_3065) - { - if (m_byte_addr < m_page_total_size) - { - if (m_page_addr < m_num_pages) - reply = m_feeprom_data[m_page_addr * m_page_total_size + m_byte_addr]; - else - reply = 0xff; - } - else - { - reply = 0xFF; - } - } - else - { - // FIXME: this appears to be incorrect, m_data_uid_ptr is a smaller structure of 256*16 - // this code would always result in reading past the buffer - uint32_t addr = m_page_addr * m_page_total_size + m_byte_addr; - if (addr < 256 + 16) - reply = m_data_uid_ptr[addr]; - } - m_byte_addr++; - if ((m_byte_addr == m_page_total_size) && (m_sequential_row_read != 0)) - { - m_byte_addr = (m_pointer_mode != SM_PM_C) ? 0 : m_page_data_size; - m_page_addr++; - if (m_page_addr == m_num_pages) - m_page_addr = 0; - } - break; - case SM_M_PROGRAM: - case SM_M_RANDOM_DATA_INPUT: - case SM_M_ERASE: - logerror("smartmedia: unexpected data port read\n"); - break; - case SM_M_READSTATUS: - reply = m_status & 0xc1; - break; - case SM_M_READID: - if (m_byte_addr < m_id_len) - reply = m_id[m_byte_addr]; - else - reply = 0; - m_byte_addr++; - break; - } - - return reply; -} - -/* - write a byte to SmartMedia data port -*/ -void nand_device::data_w(uint8_t data) -{ - if (!is_present()) - return; - - switch (m_mode) - { - case SM_M_INIT: - case SM_M_READ: - case SM_M_30: - case SM_M_RANDOM_DATA_OUTPUT: - logerror("smartmedia: unexpected data port write\n"); - break; - case SM_M_PROGRAM: - case SM_M_RANDOM_DATA_INPUT: - if (m_program_byte_count++ < m_page_total_size) - { - m_pagereg[m_byte_addr] = data; - } - m_byte_addr++; - if (m_byte_addr == m_page_total_size) - m_byte_addr = (m_pointer_mode != SM_PM_C) ? 0 : m_page_data_size; - break; - case SM_M_ERASE: - case SM_M_READSTATUS: - case SM_M_READID: - logerror("smartmedia: unexpected data port write\n"); - break; - } -} - - -/* - Initialize one SmartMedia chip: may be called at driver init or image load - time (or machine init time if you don't use MESS image core) -*/ -void nand_device::device_reset() -{ - m_mode = SM_M_INIT; - m_pointer_mode = SM_PM_A; - m_status = (m_status & 0x80) | 0x40; - m_accumulated_status = 0; -} - - DEFINE_DEVICE_TYPE(SMARTMEDIA, smartmedia_image_device, "smartmedia", "SmartMedia Flash card") smartmedia_image_device::smartmedia_image_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : nand_device(mconfig, SMARTMEDIA, tag, owner, clock) - , device_image_interface(mconfig, *this) + , device_memcard_image_interface(mconfig, *this) +{ + // SmartMedia images have been read only so keep it that way until someone puts more thought into this device + nvram_enable_backup(false); +} + +const software_list_loader &smartmedia_image_device::get_software_list_loader() const { + return image_software_list_loader::instance(); } |