Altirra 2.6 Test 6 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 2.6 Test 6 Changelog:
It's now possible to connect an emulated modem to the emulated BlackBox, bringing us one step closer to emulating the impressive chains of crap some of you have attached to your real hardware. This is enabled via the Devices dialog similarly to setting up a hard disk, by setting up the chain: Computer -> BlackBox -> Modem. I'm not sure if the control line input and output states are correct, but DTR and CD are hooked up as for the 850 emulation and ForemXEP seems to work.
Regarding getting the BlackBox hard disk to work, there are a few gotchas currently:
It has to be attached as a child of the BlackBox device node, not next to it off of Computer. I need to fix this -- the UI shouldn't let you do that.
Currently you can't change the settings on the hard disk device, but instead have to delete and recreate it. This is due to the way that the three types are multiplexed (raw/vhd/phys) and this'll get resolved later somehow.
The default currently for new hard disk devices is Read Only. This will prevent you from saving any BlackBox settings, so you'll want to uncheck this.
You'll want to go into the BlackBox controller menu and configure 0,0 as a SCSI device with 512 byte sectors.

Download: Altirra 2.6 Test 6
Source: Here