Altirra 2.5 Test 1 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. Altirra is quite matured now, and IMO, the best Atari Emu currently! It also supports some copy protected games properly in emulation.

Altirra 2.5 Test 1 Changelog:
features added
Debugger: Register (r) command can now set the emulation (E) flag.
Debugger: Improved display of 65C816 register state.
Debugger: Added search capability to History pane.
Debugger: Added some 65C02 and 65C816 instructions to assembler.
Debugger: Added .loadobj command.
Input: Middle mouse button (MMB) can now be used to release mouse capture if it is not already bound.
Profiler: Added columns for unhalted cycles.
Network: DragonCart emulation support.

bugs fixed
65C816: RTI can no longer clear the X flag in emulation mode.
CPU: Fixed crashes when disabling heat map tracking.
HLE: Acceleration hooks no longer fire in 65C816 native mode or with a non-standard emulation mode environment.
Input: Relative binding to the axis 0/1 inputs of a tablet controller now works.
Input: Fixed mouse capture malfunctioning when activated by keyboard shortcut when the mouse is outside of the window.
POKEY: Fixed POTn registers changing without POTGO being strobed.

Download: Altirra 2.5 Test 1
Source: Here