Atari800MacX v4.4.0 is released. Atari800MacX is the Mac OS X port of Atari800, an Atari 800/800XL/130XL and 5200 Emulator.

Atari800MacX v4.4.0 Changelog:
Features Added/Changed:
- Added support for 512 byte sector SpartaDos X ATR disk images.
Bugs Fixed:
- Fixed bug where erroneously long frame sleeps caused emulator to lock up.
- Fixed issue with window miniaturization buttons.
- Fixed issues with some special characters not being able to be entered in the emulator as well as some international key sequences.
- Fixed issue with super/subscript modes in Epson Printer emulation.
- Fixed issue with R: network emulation and incoming connections, BBS Software will now work.

Download: Atari800MacX v4.4.0
Source: Here