Altirra 2.1 Test 15 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 15 Changelog:

Oof... yeah, I screwed up the KMK/JZ V1 banking logic. The ROM load code was also only loading and saving 6 pages. This version should work a bit better. The emulation code in Altirra is all written from scratch. When I was bringing up basic emulation, it took a while before anything started showing up. It was very cool when River Raid started to work.

Download: Altirra 2.1 Test 15
Source: Here