An update on the CTRON Subproject

The paper reports on the current status of the CTRON subproject (part of the main TRON project). The CTRON subproject has many vital activities. We describe all the technical study items. Topics of implementation based on CTRON specification on many kinds of MPU are described. Promotion activities of the CTRON subproject around the world, especially focusing on free software of CTRON kernel, are described. Finally, we describe the future study items of our subproject. Up to now, CTRON interfaces have been tuned to get the maximum real time response and performance from applications running individually on communications equipment. Studies are now moving ahead on new issues that will expand and optimize CTRON to true multimedia network services and distributed systems.