diff options
Diffstat (limited to 'src/devices/bus/c64/dqbb.cpp')
-rw-r--r-- | src/devices/bus/c64/dqbb.cpp | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/src/devices/bus/c64/dqbb.cpp b/src/devices/bus/c64/dqbb.cpp index 20adedd9057..e4d50057537 100644 --- a/src/devices/bus/c64/dqbb.cpp +++ b/src/devices/bus/c64/dqbb.cpp @@ -53,7 +53,8 @@ c64_dqbb_cartridge_device::c64_dqbb_cartridge_device(const machine_config &mconf void c64_dqbb_cartridge_device::device_start() { // allocate memory - m_nvram.allocate(0x4000); + m_nvram = std::make_unique<uint8_t[]>(0x4000); + save_pointer(NAME(m_nvram), 0x4000); // state saving save_item(NAME(m_cs)); @@ -74,6 +75,25 @@ void c64_dqbb_cartridge_device::device_reset() } +void c64_dqbb_cartridge_device::nvram_default() +{ +} + + +bool c64_dqbb_cartridge_device::nvram_read(util::read_stream &file) +{ + auto const [err, actual] = read(file, m_nvram.get(), 0x4000); + return !err && (actual == 0x4000); +} + + +bool c64_dqbb_cartridge_device::nvram_write(util::write_stream &file) +{ + auto const [err, actual] = write(file, m_nvram.get(), 0x4000); + return !err; +} + + //------------------------------------------------- // c64_cd_r - cartridge data read //------------------------------------------------- |