CrabEmu 0.2.0 adds support for the SDSC Debug Console. This may leave some people wondering, "What exactly is it? It doesn't ever seem to do much when I'm running a game!" Simply put, the SDSC Debug Console is a virtual piece of hardware that is used to simplify the programming of Sega Master System homebrew software. Thus, if you're not doing any programming, then its probably mostly useless to you, you might as well stop reading this article now.
To those of you still with me at this point, the SDSC Debug Console provides simple printf-like functionality using some unused portions of the Z80's I/O ports. More information about how it works can be found at the SDSC website.