MESS SVN r12536 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:
r12536
mac: WIP on accelerated SuperMac Spectrum PDQ video card. This card works fine in B&W and 16 color modes (where it is not accelerated). 256 colors w/ acceleration partially works but the blitter is not all figured out yet. [R. Belmont]

Download: MESS SVN r12536 x86
Download: MESS SVN r12536 x64
Source: Here