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Aaron Giles e738b79785 Correct a long-standing design flaw: device configuration state
is now separate from runtime device state. I have larger plans
for devices, so there is some temporary scaffolding to hold
everything together, but this first step does separate things
out.

There is a new class 'running_device' which represents the
state of a live device. A list of these running_devices sits
in machine->devicelist and is created when a running_machine
is instantiated.

To access the configuration state, use device->baseconfig()
which returns a reference to the configuration.

The list of running_devices in machine->devicelist has a 1:1
correspondance with the list of device configurations in
machine->config->devicelist, and most navigation options work
equally on either (scanning by class, type, etc.)

For the most part, drivers will now deal with running_device
objects instead of const device_config objects. In fact, in
order to do this patch, I did the following global search &
replace:

  const device_config -> running_device
  device->static_config -> device->baseconfig().static_config
  device->inline_config -> device->baseconfig().inline_config

and then fixed up the compiler errors that fell out.

Some specifics:

  Removed device_get_info_* functions and replaced them with
  methods called get_config_*.
  
  Added methods for get_runtime_* to access runtime state from
  the running_device.
  
  DEVICE_GET_INFO callbacks are only passed a device_config *.
  This means they have no access to the token or runtime state
  at all. For most cases this is fine.
  
  Added new DEVICE_GET_RUNTIME_INFO callback that is passed
  the running_device for accessing data that is live at runtime.
  In the future this will go away to make room for a cleaner
  mechanism.
  
  Cleaned up the handoff of memory regions from the memory
  subsystem to the devices.
2010-01-18 09:34:43 +00:00
docs Changed behavior of -watchdog option to act like a real watchdog. It now 2009-12-24 02:52:17 +00:00
src Correct a long-standing design flaw: device configuration state 2010-01-18 09:34:43 +00:00
.gitattributes Converted the following drivers to use a driver_data structure: [Atari Ace] 2010-01-17 21:56:15 +00:00
makefile Allow that zlib and expat can be linked dynamically without changing the makefile by specifying "=0": 2010-01-17 20:36:46 +00:00