This disassembler is meant to interpret the byte codes given by instructions of the mic1 architecure. The mic1 architecture was defined here or really close.
This architecture only had one bus that you could load at a time, but the intents and purposes of this project was to take the raw byte code, and show what the instructions were meant to be.
This software was based on a really old Java simulator that loaded the byte code to a JVM. Good luck finding that.