1. a circuit schematic capture tool and simulation environment. A circuit schematic capture tool and simulation environment. Log is a large circuit editing and simulation system. It has facilities for digital simulation (the original LOG), analog simulation (AnaLOG), network generation (LOGNTK), and plotting (LPLOT). Log is the most popular Chipmunk tool. This package contains analog, diglog and loged. For more information, please see the docs contained in log-doc package. Log needs the p-system emulation runtime libraries for Chipmunk tools to work, which are included in psys packages. From Debian 3.0r0 APT