cleanup

lib/risc/instruction.rb

@@ -36,24 +36,10 @@ module Risc
       ret
     end
 
-    # derived classes must provide a byte_length
-    def byte_length
-      raise "Abstract called on #{self}"
-    end
-
     def to_cpu( translator )
       translator.translate( self )
     end
 
-    def assemble_all( io )
-      self.assemble(io)
-      self.next.assemble_all(io) if self.next
-    end
-
-    def assemble io
-      raise "Abstract called on #{self}"
-    end
-
     def total_byte_length
       ret = 0
       self.each{|ins| ret += ins.byte_length}