Altirra 2.0 Test 46 is released. Altirra is an Atari 8 bit Emulator on the Windows/DOS platform. Altirra emulates several models of the 8-bit Atari computers. This includes the the 800, 800XL, and 130XE versions. It has a lot of options, and compatibility is decent especially given the emulator's early stages. It also supports some copy protected games properly in emulation.

Altirra 2.0 Test 46 Changelog:
* Features added:
- UI: Request 1ms system timer precision only when unpaused.
- UI: Added option to bind file associations in Windows for image types.
- UI: Added /run, /disk, /tape, and /cart switches to force load types on the command line.
- Input: 1200XL F1-F4 keys can now be enabled in keyboard options.
- Input: ~ key is now an alternate mapping for the inverse key.
* Bugs Fixed:
- Debugger: Built-in kernel symbols now take priority over loaded symbols.
- HLE: Fixed crash in CIO on OPEN command with unknown device.

Download: Altirra 2.0 Test 46
Source: Here