diff options
Diffstat (limited to 'src/devices/bus/vic20/megacart.cpp')
-rw-r--r-- | src/devices/bus/vic20/megacart.cpp | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/src/devices/bus/vic20/megacart.cpp b/src/devices/bus/vic20/megacart.cpp index 8094adfba2b..74da56d5395 100644 --- a/src/devices/bus/vic20/megacart.cpp +++ b/src/devices/bus/vic20/megacart.cpp @@ -39,6 +39,7 @@ vic20_megacart_device::vic20_megacart_device(const machine_config &mconfig, cons : device_t(mconfig, VIC20_MEGACART, tag, owner, clock) , device_vic20_expansion_card_interface(mconfig, *this) , device_nvram_interface(mconfig, *this) + , m_nvram(*this, "nvram", 0x2000, ENDIANNESS_LITTLE) , m_nvram_en(0) { } @@ -50,8 +51,6 @@ vic20_megacart_device::vic20_megacart_device(const machine_config &mconfig, cons void vic20_megacart_device::device_start() { - m_nvram.allocate(0x2000); - // state saving save_item(NAME(m_nvram_en)); } @@ -66,6 +65,25 @@ void vic20_megacart_device::device_reset() } +void vic20_megacart_device::nvram_default() +{ +} + + +bool vic20_megacart_device::nvram_read(util::read_stream &file) +{ + auto const [err, actual] = read(file, m_nvram, 0x2000); + return !err && (actual == 0x2000); +} + + +bool vic20_megacart_device::nvram_write(util::write_stream &file) +{ + auto const [err, actual] = write(file, m_nvram, 0x2000); + return !err; +} + + //------------------------------------------------- // vic20_cd_r - cartridge data read //------------------------------------------------- |