I really don't know where to post this. GB / GBC / GBA Flash / dev hardware:
The devcart being useful since it uses 100% authentic hardware so I know the romhacks run properly on the real thing. Here's the system:
Gamecube with a hard wired wiikey fusion (no ribbon). SD Slot is installed in the track where the dvd laser used to be. SD Gecko is built and installed in slot B just in case. Wiikey fusion lid switch is installed in the back. This system is autobooting so it doesn't use the lid switch, but it's good to still have the lid switch installed.
The wiikey fusion is currently flashed with autobooting swiss build 240. Here's a video of some gameboy color homebrew goodness that I did some of the programming for: