diff options
Diffstat (limited to 'src/devices/bus/m5/rom.cpp')
-rw-r--r-- | src/devices/bus/m5/rom.cpp | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/src/devices/bus/m5/rom.cpp b/src/devices/bus/m5/rom.cpp new file mode 100644 index 00000000000..bffd33df541 --- /dev/null +++ b/src/devices/bus/m5/rom.cpp @@ -0,0 +1,63 @@ +// license:BSD-3-Clause +// copyright-holders:Fabio Priuli +/*********************************************************************************************************** + + + M5 cart emulation + + + ***********************************************************************************************************/ + + +#include "emu.h" +#include "rom.h" + + +//------------------------------------------------- +// m5_rom_device - constructor +//------------------------------------------------- + +const device_type M5_ROM_STD = &device_creator<m5_rom_device>; +const device_type M5_ROM_RAM = &device_creator<m5_ram_device>; + + +m5_rom_device::m5_rom_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source) + : device_t(mconfig, type, name, tag, owner, clock, shortname, source), + device_m5_cart_interface( mconfig, *this ) +{ +} + +m5_rom_device::m5_rom_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) + : device_t(mconfig, M5_ROM_STD, "M5 Standard ROM Carts", tag, owner, clock, "m5_rom", __FILE__), + device_m5_cart_interface( mconfig, *this ) +{ +} + + +m5_ram_device::m5_ram_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) + : m5_rom_device(mconfig, M5_ROM_RAM, "M5 Expansion memory cart", tag, owner, clock, "m5_ram", __FILE__) +{ +} + + +/*------------------------------------------------- + mapper specific handlers + -------------------------------------------------*/ + +READ8_MEMBER(m5_rom_device::read_rom) +{ + if (offset < m_rom_size) + return m_rom[offset]; + else + return 0xff; +} + +READ8_MEMBER(m5_ram_device::read_ram) +{ + return m_ram[offset]; +} + +WRITE8_MEMBER(m5_ram_device::write_ram) +{ + m_ram[offset] = data; +} |