At the present stage of development A8E emulates the following Atari 800 XL features (note: nothing in the list is really at 100% so beware of some nasty bugs):

• SALLY (6502 CPU)
  
• ANTIC
  
• GTIA
• SIO (disk drive "D1"; read mode, ATR file format)
  
• Player/Missile graphics
  

To do (whish) list:

• POKEY
• Tune colors
• Gamepad/joystick control
  
• Bug fixing (always)
• Optimizing (always)
• User interface
• Support more disk file formats
  

Unfortunately you need to have a rather fast machine for the emulator if you want to use the OpenGL option!