I've been sitting on this release a bit longer than I would've liked to, so I decided it would be a good time to just release it. This new release of CrabEmu adds a Qt "port" (and support for Linux) along with many other changes to the emulation. Here's a high-level overview of what exactly has changed in CrabEmu 0.1.9 (in relation to the Dreamcast port, and general stuff):
Fix a lot of cycle counting issues in CrabZ80.
Added support for the SMS VDP's H-Counter.
Added support for utilizing a BIOS ROM with SMS and Game Gear emulation (also, added a BIOS replacement).
Added support for the IO Control and Memory Control registers on the SMS.