DuckCorp Dico

Found one definition

1.                 From The Free On-line Dictionary of Computing (19 January 2023):
                   
   
   
                   
                     
   Yaa
      Yet Another Assembler - Macro assembler for GCOS 8 and Mark
      III on Bull DPS-8 machines.  Available from Bull as part of U
      Waterloo Tools package (maintained by <pjf@thinkage.on.ca>).