keep risc and cpu instructions separate in method

that overwriting was a bit of thorn

lib/risc/boot.rb

@@ -149,9 +149,9 @@ module Risc
                       super_class_name: :Word , instance_names: :List },
           Dictionary: {keys: :List , values: :List  } ,
           CacheEntry: {cached_type: :Type , cached_method: :TypedMethod  } ,
-          TypedMethod: {name: :Word, source: :Object, instructions: :Object,
-                        binary: :BinaryCode, arguments: :Type , for_type: :Type,
-                        frame: :Type } ,
+          TypedMethod: {name: :Word, source: :Object, risc_instructions: :Object,
+                        cpu_instructions: :Object, binary: :BinaryCode, 
+                        arguments: :Type , for_type: :Type, frame: :Type } ,
         }
     end
 

lib/risc/interpreter.rb

@@ -43,7 +43,7 @@ module Risc
     def start( instruction )
       initialize
       set_state(:running)
-      set_instruction instruction
+      set_instruction( instruction )
     end
 
     def set_state( state )
@@ -54,7 +54,7 @@ module Risc
     end
 
     def set_instruction( i )
-      raise "set to same instruction #{i}" if @instruction == i
+      raise "set to same instruction #{i}:#{i.class}" if @instruction == i
       old = @instruction
       @instruction = i
       trigger(:instruction_changed, old , i)
@@ -195,7 +195,7 @@ module Risc
     end
 
     def execute_FunctionCall
-      set_instruction @instruction.method.instructions
+      set_instruction @instruction.method.risc_instructions
       false
     end