The ColecoVision library exposes the ColecoVision hardware's functionality to the C programmer. All basic functionality is supported. Support for the scrolling wheel on the super action controllers is still missing.
The ColecoVision utility library builds on top of the ColecoVision library. It provides a higher level of abstraction.
Both are covered by the LGPL. Small demo programs are included and functions are documented in comments in the header files. The latest version is libcv 0.28 / libcvu 0.21 from 2021-10-01. SDCC 4.0.0 or newer is recommended.
The libraries are intended for use with the C compiler SDCC and my tools png2cv, png2cvs, abc2cvm and cvmtuning.