MESS SVN r12682 is released. MESS(Multi Emulator Super System) is an open source emulator which emulates a large variety of different systems. MESS is a source-available project which documents the hardware for a wide variety of (mostly vintage) computers, video game consoles, and calculators through software emulation, as MAME does for arcade games. As a nice side effect to this documentation, MESS allows software and games for these hardware platforms to be run on modern PCs.

MESS SVN Changelog:
r12680
More fixed up Subcode Q, fixed PC Engine Subcode Q too
r12681
Hooked up Subcode RW dummy transfer, added a preliminary CD-ROM index register (fixes CD-DA timing in Guardian Heroes)
r12682
Preliminary implementation of reset and tray close/tray open events

Download: MESS SVN r12682 x86
Download: MESS SVN r12682 x64
Source: Here