diff options
Diffstat (limited to 'src/devices/bus/arcadia/rom.c')
-rw-r--r-- | src/devices/bus/arcadia/rom.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/src/devices/bus/arcadia/rom.c b/src/devices/bus/arcadia/rom.c new file mode 100644 index 00000000000..5a6186aa8de --- /dev/null +++ b/src/devices/bus/arcadia/rom.c @@ -0,0 +1,62 @@ +// license:BSD-3-Clause +// copyright-holders:Fabio Priuli +/*********************************************************************************************************** + + + Emerson Arcadia 2001 cart emulation + + Golf carts have the "extra_rom" handler installed at $4000 instead of $2000 + + ***********************************************************************************************************/ + + +#include "emu.h" +#include "rom.h" + + +//------------------------------------------------- +// arcadia_rom_device - constructor +//------------------------------------------------- + +const device_type ARCADIA_ROM_STD = &device_creator<arcadia_rom_device>; +const device_type ARCADIA_ROM_GOLF = &device_creator<arcadia_golf_device>; + + +arcadia_rom_device::arcadia_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_arcadia_cart_interface( mconfig, *this ) +{ +} + +arcadia_rom_device::arcadia_rom_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) + : device_t(mconfig, ARCADIA_ROM_STD, "Emerson Arcadia Standard Carts", tag, owner, clock, "arcadia_rom", __FILE__), + device_arcadia_cart_interface( mconfig, *this ) +{ +} + +arcadia_golf_device::arcadia_golf_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) + : arcadia_rom_device(mconfig, ARCADIA_ROM_GOLF, "Emerson Arcadia Golf Cart", tag, owner, clock, "arcadia_golf", __FILE__) +{ +} + + +/*------------------------------------------------- + mapper specific handlers + -------------------------------------------------*/ + +READ8_MEMBER(arcadia_rom_device::read_rom) +{ + if (offset < m_rom_size) + return m_rom[offset]; + else + return 0xff; +} + + +READ8_MEMBER(arcadia_rom_device::extra_rom) +{ + if (offset + 0x1000 < m_rom_size) + return m_rom[offset + 0x1000]; + else + return 0xff; +} |