* Support for DMG (only).
* High accuracy
* Accurate clock frequency: don't sync over frames or sound, but the clock frequency itself.
* Battery saves support.
* Save and load states.
* Time travel backwards in time (Rewind)
* Graphical interface for listing roms in a folder.
* Debugger with a graphical interface:
  - Views for disassembly, registers, video RAM, etc...
  - Statically trace rom for executable memory ranges (and at runtime).
  - Add breakpoints at read, write, jump or execution of memory addresses.
  - Watch addresses.
  - Step code backwards.