diff options
Diffstat (limited to 'src/emu/machine.cpp')
-rw-r--r-- | src/emu/machine.cpp | 49 |
1 files changed, 48 insertions, 1 deletions
diff --git a/src/emu/machine.cpp b/src/emu/machine.cpp index 94c331eac8d..4871e004d82 100644 --- a/src/emu/machine.cpp +++ b/src/emu/machine.cpp @@ -130,10 +130,13 @@ running_machine::running_machine(const machine_config &_config, machine_manager m_memory(*this), m_ioport(*this), m_parameters(*this), - m_scheduler(*this) + m_scheduler(*this), + m_dummy_space(_config, "dummy_space", &root_device(), 0) { memset(&m_base_time, 0, sizeof(m_base_time)); + m_dummy_space.set_machine(*this); + // set the machine on all devices device_iterator iter(root_device()); for (device_t &device : iter) @@ -963,6 +966,8 @@ void running_machine::logfile_callback(const char *buffer) void running_machine::start_all_devices() { + m_dummy_space.start(); + // iterate through the devices int last_failed_starts = -1; while (last_failed_starts != 0) @@ -1228,6 +1233,48 @@ void system_time::full_time::set(struct tm &t) //************************************************************************** +// DUMMY ADDRESS SPACE +//************************************************************************** + +READ8_MEMBER(dummy_space_device::read) +{ + throw emu_fatalerror("Attempted to read from generic address space (offs %X)\n", offset); +} + +WRITE8_MEMBER(dummy_space_device::write) +{ + throw emu_fatalerror("Attempted to write to generic address space (offs %X = %02X)\n", offset, data); +} + +static ADDRESS_MAP_START(dummy, AS_0, 8, dummy_space_device) + AM_RANGE(0x00000000, 0xffffffff) AM_READWRITE(read, write) +ADDRESS_MAP_END + +const device_type DUMMY_SPACE = &device_creator<dummy_space_device>; + +dummy_space_device::dummy_space_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : + device_t(mconfig, DUMMY_SPACE, "Dummy Space", tag, owner, clock, "dummy_space", __FILE__), + device_memory_interface(mconfig, *this), + m_space_config("dummy", ENDIANNESS_LITTLE, 8, 32, 0, nullptr, *ADDRESS_MAP_NAME(dummy)) +{ +} + +void dummy_space_device::device_start() +{ +} + +//------------------------------------------------- +// memory_space_config - return a description of +// any address spaces owned by this device +//------------------------------------------------- + +const address_space_config *dummy_space_device::memory_space_config(address_spacenum spacenum) const +{ + return (spacenum == 0) ? &m_space_config : nullptr; +} + + +//************************************************************************** // JAVASCRIPT PORT-SPECIFIC //************************************************************************** |