Altirra 2.0 Test 14 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 14 Changelog:

Version with trackball support (CX-80 and 5200) The 5200 trackball is configured the same as the 5200 controller. You will probably want to use a different binding mode for its axes, though, such as absolute instead of relative. In practice, because of the way the 5200 trackball works, it won't actually add much to games since the only real benefit you get from it is that it acts like an auto-centering joystick, which you already get in an emulator. Similarly, the CX-80 trackball is basically a big upside-down mouse and you configure it in the emulator like one, with the same caveat about possibly using absolute mode. The CX-22/early CX-80 mode seemed to work with the XL/XE test programs that I had, and the 5200 one works with Pengo and Missile Command. Oddly, the XE version of Missile Command seems to support two different trackballs without you telling which one (!). It supports both the CX-22 style velocity / direction encoding and the ST mouse encoding. So far it's the only program I know of that does this, as others took only one or the other. I suck at Missile Command, by the way.

Download: Altirra 2.0 Test 14
Source: Here