Bug fixes: Fixed a graphics bug caused by returning an erroneous value from DENISEID (#676, #675) Several smaller GUI tweaks Enhancements: Added support for the debug board implemented by @mras0 (#666) Improved HDF geometry prediction (#674) A new write-through mode makes hard drives persistent (#670) Added several new debugging features Catchpoints (stops emulation on CPU exceptions) (#666) Software traps (#666) Copper breakpoints and Copper watchpoints (#668) Rudimentary callstack recording (#671)