Altirra 2.1 Test 16 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 2.1 Test 16 Changelog:

That was happening because the SDX ROM was enabled. Since there aren't any SDX banking registers on the V1 hardware (that I know of), it isn't supposed to be there and I disabled it: However, it would be nice if TLW handled the situation of having a cartridge installed a little more gracefully. On the HD geometry issue: problem is I have nowhere to save the config if the HD isn't enabled. I was thinking of having a separate file next to the HD image to store the geometry, or just allowing a file format that has geometry info in it. VHD's attractive, because most OSes now can mount VHD files.

Download: Altirra 2.1 Test 16
Source: Here