John Hansen has released an updated NBC beta.

This beta release adds call, release, abs, sub, and waitv opcodes. It also makes the preprocessor operate recursively on both parameterized and non-parameterized macros. It fixes a typo in the NXTDefs.h header file and adds some standard preprocessor macros for motor control. The compiler has a major new optimization feature which removes unused variables and threads/subroutines from the compiled executable. In b7 I accidentally broke the “wait” opcode support that was added in b6 but that support has been restored in b8.