diff options
Diffstat (limited to 'src/devices/bus/msx_cart/crossblaim.cpp')
-rw-r--r-- | src/devices/bus/msx_cart/crossblaim.cpp | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/src/devices/bus/msx_cart/crossblaim.cpp b/src/devices/bus/msx_cart/crossblaim.cpp deleted file mode 100644 index 6494e492f5b..00000000000 --- a/src/devices/bus/msx_cart/crossblaim.cpp +++ /dev/null @@ -1,86 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:Wilbert Pol -#include "emu.h" -#include "crossblaim.h" - -DEFINE_DEVICE_TYPE(MSX_CART_CROSSBLAIM, msx_cart_crossblaim_device, "msx_cart_crossblaim", "MSX Cartridge Cross Blaim") - - -msx_cart_crossblaim_device::msx_cart_crossblaim_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) - : device_t(mconfig, MSX_CART_CROSSBLAIM, tag, owner, clock) - , msx_cart_interface(mconfig, *this) - , m_selected_bank(1) -{ - for (auto & elem : m_bank_base) - { - elem = nullptr; - } -} - - -void msx_cart_crossblaim_device::device_start() -{ - save_item(NAME(m_selected_bank)); -} - - -void msx_cart_crossblaim_device::device_post_load() -{ - restore_banks(); -} - - -void msx_cart_crossblaim_device::setup_bank() -{ - m_bank_base[0] = ( m_selected_bank & 2 ) ? nullptr : get_rom_base() + ( m_selected_bank & 0x03 ) * 0x4000; - m_bank_base[2] = get_rom_base() + ( m_selected_bank & 0x03 ) * 0x4000; - m_bank_base[3] = ( m_selected_bank & 2 ) ? nullptr : get_rom_base() + ( m_selected_bank & 0x03 ) * 0x4000; -} - - -void msx_cart_crossblaim_device::restore_banks() -{ - m_bank_base[1] = get_rom_base(); - setup_bank(); -} - - -void msx_cart_crossblaim_device::device_reset() -{ - m_selected_bank = 1; -} - - -void msx_cart_crossblaim_device::initialize_cartridge() -{ - if (get_rom_size() != 0x10000) - { - fatalerror("crossblaim: Invalid ROM size\n"); - } - - restore_banks(); -} - - -uint8_t msx_cart_crossblaim_device::read_cart(offs_t offset) -{ - uint8_t *bank_base = m_bank_base[offset >> 14]; - - if (bank_base != nullptr) - { - return bank_base[offset & 0x3fff]; - } - - return 0xff; -} - - -void msx_cart_crossblaim_device::write_cart(offs_t offset, uint8_t data) -{ - m_selected_bank = data & 3; - if (m_selected_bank == 0) - { - m_selected_bank = 1; - } - setup_bank(); -} |