Now that the GNU GCC 3.0 compiler has shipped and supports cross-compilation on the 68HC11 and 68HC12, what can you do with it? You can try out NanoK, a “nanoscopic” task-switching kernel.
Or how about running Ethernet and a TCP/IP stack on your 68HC11? These and other uses of the GNU tool chain for 68HC11/68HC12 chips is covered at www.gnu-m68hc11.org. You’ll also find lots of documentation on installing and using the GNU compiler and tool chain.
They also provide some benchmark examples. With so many robots running on the 68HC11, the number of projects using the free compiler is likely to increase rapidly.