In any case, I had come up empty-handed on my real objective: finding source code from the manufacturer, OKI. In looking through Lottor’s files, I discovered that Shimomura had written an 8051 "disassembler" program that Lottor was using for reverse-engineering the firmware. I also read numerous emails between Lottor and Shimomura discussing their OKI reverse-engineering project. In one interesting email, Lottor sent Shimomura a console application named "modesn.exe."