BASIC09
BASIC09 is a structured BASIC programming language dialect developed by Microware for the then-new Motorola 6809 CPU. Somewhat in the fashion of UCSD Pascal it was implemented via 'compilation' into an intermediate representation. It was paired with the OS-9 Operating system, also from Microware and took advantage of several OS-9 features (e.g., shared memory, module loading and unloading, etc.).
Read more about Basic09.