diff options
Diffstat (limited to 'src/devices/bus/msx_cart/ascii.cpp')
-rw-r--r-- | src/devices/bus/msx_cart/ascii.cpp | 555 |
1 files changed, 0 insertions, 555 deletions
diff --git a/src/devices/bus/msx_cart/ascii.cpp b/src/devices/bus/msx_cart/ascii.cpp deleted file mode 100644 index 7d1b354b404..00000000000 --- a/src/devices/bus/msx_cart/ascii.cpp +++ /dev/null @@ -1,555 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:Wilbert Pol -#include "emu.h" -#include "ascii.h" - - -DEFINE_DEVICE_TYPE(MSX_CART_ASCII8, msx_cart_ascii8_device, "msx_cart_ascii8", "MSX Cartridge - ASCII8") -DEFINE_DEVICE_TYPE(MSX_CART_ASCII16, msx_cart_ascii16_device, "msx_cart_ascii16", "MSX Cartridge - ASCII16") -DEFINE_DEVICE_TYPE(MSX_CART_ASCII8_SRAM, msx_cart_ascii8_sram_device, "msx_cart_ascii8_sram", "MSX Cartridge - ASCII8 w/SRAM") -DEFINE_DEVICE_TYPE(MSX_CART_ASCII16_SRAM, msx_cart_ascii16_sram_device, "msx_cart_ascii16_sram", "MSX Cartridge - ASCII16 w/SRAM") -DEFINE_DEVICE_TYPE(MSX_CART_MSXWRITE, msx_cart_msxwrite_device, "msx_cart_msxwrite", "MSX Cartridge - MSXWRITE") - - -msx_cart_ascii8_device::msx_cart_ascii8_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) - : device_t(mconfig, MSX_CART_ASCII8, tag, owner, clock) - , msx_cart_interface(mconfig, *this) - , m_bank_mask(0) -{ - for (int i = 0; i < 4; i++) - { - m_selected_bank[i] = 0; - m_bank_base[i] = nullptr; - } -} - - -void msx_cart_ascii8_device::device_start() -{ - save_item(NAME(m_selected_bank)); -} - - -void msx_cart_ascii8_device::device_post_load() -{ - restore_banks(); -} - - -void msx_cart_ascii8_device::restore_banks() -{ - for (int i = 0; i < 4; i++) - { - m_bank_base[i] = get_rom_base() + (m_selected_bank[i] & m_bank_mask ) * 0x2000; - } -} - - -void msx_cart_ascii8_device::device_reset() -{ - for (auto & elem : m_selected_bank) - { - elem = 0; - } -} - - -void msx_cart_ascii8_device::initialize_cartridge() -{ - uint32_t size = get_rom_size(); - - if ( size > 256 * 0x2000 ) - { - fatalerror("ascii8: ROM is too big\n"); - } - - uint16_t banks = size / 0x2000; - - if (size != banks * 0x2000 || (~(banks - 1) % banks)) - { - fatalerror("ascii8: Invalid ROM size\n"); - } - - m_bank_mask = banks - 1; - - restore_banks(); -} - - -uint8_t msx_cart_ascii8_device::read_cart(offs_t offset) -{ - if ( offset >= 0x4000 && offset < 0xC000 ) - { - return m_bank_base[(offset - 0x4000) >> 13][offset & 0x1fff]; - } - return 0xff; -} - - -void msx_cart_ascii8_device::write_cart(offs_t offset, uint8_t data) -{ - if (offset >= 0x6000 && offset < 0x8000) - { - uint8_t bank = (offset / 0x800) & 0x03; - - m_selected_bank[bank] = data; - m_bank_base[bank] = get_rom_base() + (m_selected_bank[bank] & m_bank_mask ) * 0x2000; - } -} - - - -msx_cart_ascii16_device::msx_cart_ascii16_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) - : device_t(mconfig, MSX_CART_ASCII16, tag, owner, clock) - , msx_cart_interface(mconfig, *this) - , m_bank_mask(0) -{ - for (int i = 0; i < 2; i++) - { - m_selected_bank[i] = 0; - m_bank_base[i] = nullptr; - } -} - - -void msx_cart_ascii16_device::device_start() -{ - save_item(NAME(m_selected_bank)); -} - - -void msx_cart_ascii16_device::device_post_load() -{ - restore_banks(); -} - - -void msx_cart_ascii16_device::restore_banks() -{ - for (int i = 0; i < 2; i++) - { - m_bank_base[i] = get_rom_base() + (m_selected_bank[i] & m_bank_mask) * 0x4000; - } -} - - -void msx_cart_ascii16_device::device_reset() -{ - for (auto & elem : m_selected_bank) - { - elem = 0; - } -} - - -void msx_cart_ascii16_device::initialize_cartridge() -{ - uint32_t size = get_rom_size(); - - if ( size > 256 * 0x4000 ) - { - fatalerror("ascii16: ROM is too big\n"); - } - - uint16_t banks = size / 0x4000; - - if (size != banks * 0x4000 || (~(banks - 1) % banks)) - { - fatalerror("ascii16: Invalid ROM size\n"); - } - - m_bank_mask = banks - 1; - - restore_banks(); -} - - -uint8_t msx_cart_ascii16_device::read_cart(offs_t offset) -{ - if ( offset >= 0x4000 && offset < 0xC000 ) - { - return m_bank_base[offset >> 15][offset & 0x3fff]; - } - return 0xff; -} - - -void msx_cart_ascii16_device::write_cart(offs_t offset, uint8_t data) -{ - if (offset >= 0x6000 && offset < 0x6800) - { - m_selected_bank[0] = data; - m_bank_base[0] = get_rom_base() + (m_selected_bank[0] & m_bank_mask) * 0x4000; - } - - if (offset >= 0x7000 && offset < 0x7800) - { - m_selected_bank[1] = data; - m_bank_base[1] = get_rom_base() + (m_selected_bank[1] & m_bank_mask) * 0x4000; - } -} - - - - - -msx_cart_ascii8_sram_device::msx_cart_ascii8_sram_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) - : device_t(mconfig, MSX_CART_ASCII8_SRAM, tag, owner, clock) - , msx_cart_interface(mconfig, *this) - , m_bank_mask(0) - , m_sram_select_mask(0) -{ - for (int i = 0; i < 4; i++) - { - m_selected_bank[i] = 0; - m_bank_base[i] = nullptr; - } -} - - -void msx_cart_ascii8_sram_device::device_start() -{ - save_item(NAME(m_selected_bank)); -} - - -void msx_cart_ascii8_sram_device::device_post_load() -{ - restore_banks(); -} - - -void msx_cart_ascii8_sram_device::setup_bank(uint8_t bank) -{ - if (m_selected_bank[bank] & ~(m_sram_select_mask | m_bank_mask)) - { - // Nothing is mapped - m_bank_base[bank] = nullptr; - } - else if (m_selected_bank[bank] & m_sram_select_mask) - { - // SRAM is selected - m_bank_base[bank] = get_sram_base(); - } - else - { - m_bank_base[bank] = get_rom_base() + (m_selected_bank[bank] & m_bank_mask ) * 0x2000; - } -} - - -void msx_cart_ascii8_sram_device::restore_banks() -{ - for (int i = 0; i < 4; i++) - { - setup_bank(i); - } -} - - -void msx_cart_ascii8_sram_device::device_reset() -{ - for (auto & elem : m_selected_bank) - { - elem = 0; - } -} - - -void msx_cart_ascii8_sram_device::initialize_cartridge() -{ - uint32_t size = get_rom_size(); - - if ( size > 128 * 0x2000 ) - { - fatalerror("ascii8_sram: ROM is too big\n"); - } - - uint16_t banks = size / 0x2000; - - if (size != banks * 0x2000 || (~(banks - 1) % banks)) - { - fatalerror("ascii8_sram: Invalid ROM size\n"); - } - - if (get_sram_size() != 0x2000) - { - fatalerror("ascii8_sram: Unsupported SRAM size\n"); - } - - m_bank_mask = banks - 1; - m_sram_select_mask = banks; - - restore_banks(); -} - - -uint8_t msx_cart_ascii8_sram_device::read_cart(offs_t offset) -{ - if ( offset >= 0x4000 && offset < 0xC000 ) - { - uint8_t *bank_base = m_bank_base[(offset - 0x4000) >> 13]; - - if (bank_base != nullptr) - { - return bank_base[offset & 0x1fff]; - } - } - return 0xff; -} - - -void msx_cart_ascii8_sram_device::write_cart(offs_t offset, uint8_t data) -{ - if (offset >= 0x6000 && offset < 0x8000) - { - uint8_t bank = (offset / 0x800) & 0x03; - - m_selected_bank[bank] = data; - setup_bank(bank); - } - else if (offset >= 0x8000 && offset < 0xc000) - { - uint8_t bank = (offset & 0x2000) ? 3 : 2; - - if ((m_selected_bank[bank] & m_sram_select_mask) && !(m_selected_bank[bank] & ~(m_sram_select_mask | m_bank_mask))) - { - // Write to SRAM - m_bank_base[bank][offset & 0x1fff] = data; - } - } -} - - - -msx_cart_ascii16_sram_device::msx_cart_ascii16_sram_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) - : device_t(mconfig, MSX_CART_ASCII16_SRAM, tag, owner, clock) - , msx_cart_interface(mconfig, *this) - , m_bank_mask(0) - , m_sram_select_mask(0) -{ - for (int i = 0; i < 2; i++) - { - m_selected_bank[i] = 0; - m_bank_base[i] = nullptr; - } -} - - -void msx_cart_ascii16_sram_device::device_start() -{ - save_item(NAME(m_selected_bank)); -} - - -void msx_cart_ascii16_sram_device::device_post_load() -{ - restore_banks(); -} - - -void msx_cart_ascii16_sram_device::setup_bank(uint8_t bank) -{ - if (m_selected_bank[bank] & ~(m_sram_select_mask | m_bank_mask)) - { - // Nothing is mapped - m_bank_base[bank] = nullptr; - } - else if (m_selected_bank[bank] & m_sram_select_mask) - { - // SRAM is selected - m_bank_base[bank] = get_sram_base(); - } - else - { - m_bank_base[bank] = get_rom_base() + (m_selected_bank[bank] & m_bank_mask) * 0x4000; - } -} - - -void msx_cart_ascii16_sram_device::restore_banks() -{ - for (int i = 0; i < 2; i++) - { - setup_bank(i); - } -} - - -void msx_cart_ascii16_sram_device::device_reset() -{ - for (auto & elem : m_selected_bank) - { - elem = 0; - } -} - - -void msx_cart_ascii16_sram_device::initialize_cartridge() -{ - uint32_t size = get_rom_size(); - - if ( size > 128 * 0x4000 ) - { - fatalerror("ascii16_sram: ROM is too big\n"); - } - - uint16_t banks = size / 0x4000; - - if (size != banks * 0x4000 || (~(banks - 1) % banks)) - { - fatalerror("ascii16_sram: Invalid ROM size\n"); - } - - if (get_sram_size() != 0x800) - { - fatalerror("ascii16_sram: Unsupported SRAM size\n"); - } - - m_bank_mask = banks - 1; - m_sram_select_mask = banks; - - restore_banks(); -} - - -uint8_t msx_cart_ascii16_sram_device::read_cart(offs_t offset) -{ - if ( offset >= 0x4000 && offset < 0xC000 ) - { - uint8_t bank = offset >> 15; - - if (m_bank_base[bank] != nullptr) - { - if (m_selected_bank[bank] & m_sram_select_mask) - { - return m_bank_base[bank][offset & 0x7ff]; - } - else - { - return m_bank_base[bank][offset & 0x3fff]; - } - } - } - return 0xff; -} - - -void msx_cart_ascii16_sram_device::write_cart(offs_t offset, uint8_t data) -{ - if (offset >= 0x6000 && offset < 0x6800) - { - m_selected_bank[0] = data; - setup_bank(0); - } - - if (offset >= 0x7000 && offset < 0x7800) - { - m_selected_bank[1] = data; - setup_bank(1); - } - - if (offset >= 0x8000 && offset < 0xc000) - { - if ((m_selected_bank[1] & m_sram_select_mask) && !(m_selected_bank[1] & ~(m_sram_select_mask | m_bank_mask))) - { - // Write to SRAM - m_bank_base[1][offset & 0x7ff] = data; - } - } -} - - - -msx_cart_msxwrite_device::msx_cart_msxwrite_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) - : device_t(mconfig, MSX_CART_MSXWRITE, tag, owner, clock) - , msx_cart_interface(mconfig, *this) - , m_bank_mask(0) -{ - for (int i = 0; i < 2; i++) - { - m_selected_bank[i] = 0; - m_bank_base[i] = nullptr; - } -} - - -void msx_cart_msxwrite_device::device_start() -{ - save_item(NAME(m_selected_bank)); -} - - -void msx_cart_msxwrite_device::device_post_load() -{ - restore_banks(); -} - - -void msx_cart_msxwrite_device::restore_banks() -{ - for (int i = 0; i < 2; i++) - { - m_bank_base[i] = get_rom_base() + (m_selected_bank[i] & m_bank_mask) * 0x4000; - } -} - - -void msx_cart_msxwrite_device::device_reset() -{ - for (auto & elem : m_selected_bank) - { - elem = 0; - } -} - - -void msx_cart_msxwrite_device::initialize_cartridge() -{ - uint32_t size = get_rom_size(); - - if ( size > 256 * 0x4000 ) - { - fatalerror("msxwrite: ROM is too big\n"); - } - - uint16_t banks = size / 0x4000; - - if (size != banks * 0x4000 || (~(banks - 1) % banks)) - { - fatalerror("msxwrite: Invalid ROM size\n"); - } - - m_bank_mask = banks - 1; - - restore_banks(); -} - - -uint8_t msx_cart_msxwrite_device::read_cart(offs_t offset) -{ - if ( offset >= 0x4000 && offset < 0xC000 ) - { - return m_bank_base[offset >> 15][offset & 0x3fff]; - } - return 0xff; -} - - -void msx_cart_msxwrite_device::write_cart(offs_t offset, uint8_t data) -{ - // The rom writes to 6fff and 7fff for banking, unknown whether - // other locations also trigger banking. - switch (offset) - { - case 0x6fff: - m_selected_bank[0] = data; - m_bank_base[0] = get_rom_base() + (m_selected_bank[0] & m_bank_mask) * 0x4000; - break; - - case 0x7fff: - m_selected_bank[1] = data; - m_bank_base[1] = get_rom_base() + (m_selected_bank[1] & m_bank_mask) * 0x4000; - break; - } -} |