What's new in version 6.4

Dropped support for Mac OS X 10.4 and the PowerPC processor. The program now requires an Intel Mac running Mac OS X 10.5 (Leopard) or better. 
Added a feature to change the write protection and volume number of disk images. 
It is now possible to configure a 65C02 processor in an Apple ][ or ][+ virtual machine. 
When choosing "Copy as Text" from the Edit menu, international characters on the screen are now correctly copied to the Mac clipboard. 
Improved the quality of the QuickLook preview and thumbnail of a saved state file. 
Some custom character sets were not accepted by the virtual machine - this has been fixed. 
Fixed a number of minor issues, thereby improving the overall stability of the program. 
