| IEEmulatorHooks | Evaluation (execution) hooks. |
| EEmulator | IR emulator, a controller for an IR state. |
| EEmulator.Metadata | IR emulator metadata. |
| EEmuUtil | Utility code IR emulators. |
| MemoryWrites | Recorder of memory-write operations, used by EState. |
| MemoryWrites.Record | Memory record holding an address and a buffer of bytes. |
| RoutineIOHandler | Concrete accessors of a routine I/O items. |