Homebrew developer Zx-81 has released an update to PSP2600, a Atari 2600 emulator for the PSP. PSP2600 is heavily based on code from Aenea's PSP port of Stella, a multi-platform Atari 2600 VCS emulator originally written by Bradford Mott.
Version 1.1.3 features various performance-related optimizations and includes new EBOOT music courtesy of electro-industrial music band Observe & Control.
Download PSP2600 v1.1.3 for Custom Firmware / PSP2600 v1.1.3 for Firmware 1.5
PSP2600: Atari 2600 emulator for PSP v1.1.3 [Zx-81]