diff --git a/lib/register/instructions/branch.rb b/lib/register/instructions/branch.rb
index 61857e02..04fe3adf 100644
--- a/lib/register/instructions/branch.rb
+++ b/lib/register/instructions/branch.rb
@@ -11,7 +11,7 @@ module Register
     attr_reader :block
 
     def to_s
-      "Branch(block: #{block.name})"
+      "Branch: #{block.name}"
     end
 
   end
diff --git a/lib/register/instructions/function_call.rb b/lib/register/instructions/function_call.rb
index 0b65aa20..ab2e4b4b 100644
--- a/lib/register/instructions/function_call.rb
+++ b/lib/register/instructions/function_call.rb
@@ -10,7 +10,7 @@ module Register
     attr_reader :method
 
     def to_s
-      "FunctionCall(#{method.name})"
+      "FunctionCall: #{method.name}"
     end
 
   end
diff --git a/lib/register/instructions/function_return.rb b/lib/register/instructions/function_return.rb
index 2b5ec518..93393178 100644
--- a/lib/register/instructions/function_return.rb
+++ b/lib/register/instructions/function_return.rb
@@ -11,7 +11,7 @@ module Register
     attr_reader :register , :index
 
     def to_s
-      "FunctionReturn(#{register}: #{index})"
+      "FunctionReturn: #{register} [#{index}]"
     end
 
   end
diff --git a/lib/register/instructions/get_slot.rb b/lib/register/instructions/get_slot.rb
index 0c4c0cd4..5e7b5cf9 100644
--- a/lib/register/instructions/get_slot.rb
+++ b/lib/register/instructions/get_slot.rb
@@ -29,7 +29,7 @@ module Register
     attr_accessor :register , :array , :index
 
     def to_s
-      "GetSlot(#{register}: #{array}[#{index}])"
+      "GetSlot: #{register} -> #{array} [#{index}]"
     end
 
   end
diff --git a/lib/register/instructions/load_constant.rb b/lib/register/instructions/load_constant.rb
index 708b1ade..00f52b97 100644
--- a/lib/register/instructions/load_constant.rb
+++ b/lib/register/instructions/load_constant.rb
@@ -12,7 +12,7 @@ module Register
     attr_accessor :register , :constant
 
     def to_s
-      "LoadConstant(#{register}: #{constant})"
+      "LoadConstant: #{register} <- #{constant}"
     end
 
   end
diff --git a/lib/register/instructions/register_transfer.rb b/lib/register/instructions/register_transfer.rb
index 7b7362df..91945fde 100644
--- a/lib/register/instructions/register_transfer.rb
+++ b/lib/register/instructions/register_transfer.rb
@@ -23,7 +23,7 @@ module Register
     attr_reader :from, :to
 
     def to_s
-      "RegisterTransfer(#{from} -> #{to})"
+      "RegisterTransfer: #{from} -> #{to}"
     end
 
   end
diff --git a/lib/register/instructions/save_return.rb b/lib/register/instructions/save_return.rb
index a4faffa3..910346b8 100644
--- a/lib/register/instructions/save_return.rb
+++ b/lib/register/instructions/save_return.rb
@@ -14,7 +14,7 @@ module Register
     attr_reader :register , :index
 
     def to_s
-      "SaveReturn(#{register}[#{index}])"
+      "SaveReturn: #{register} [#{index}]"
     end
 
   end
diff --git a/lib/register/instructions/set_slot.rb b/lib/register/instructions/set_slot.rb
index b0e04e0b..926fc562 100644
--- a/lib/register/instructions/set_slot.rb
+++ b/lib/register/instructions/set_slot.rb
@@ -27,7 +27,7 @@ module Register
     end
     attr_accessor :register , :array , :index
     def to_s
-      "SetSlot(#{register}: #{array}[#{index}])"
+      "SetSlot: #{register} -> #{array} [#{index}]"
     end
 
   end
diff --git a/lib/register/instructions/syscall.rb b/lib/register/instructions/syscall.rb
index 1da3f038..a96f83be 100644
--- a/lib/register/instructions/syscall.rb
+++ b/lib/register/instructions/syscall.rb
@@ -15,7 +15,7 @@ module Register
     attr_reader :name
 
     def to_s
-      "Syscall(#{name})"
+      "Syscall: #{name}"
     end
 
   end
diff --git a/lib/virtual/machine.rb b/lib/virtual/machine.rb
index 873d7ad5..51c0ce0d 100644
--- a/lib/virtual/machine.rb
+++ b/lib/virtual/machine.rb
@@ -62,7 +62,7 @@ module Virtual
         end
       end
       @passes.each do |pass_class|
-        puts "running #{pass_class}"
+        #puts "running #{pass_class}"
         run_blocks_for pass_class
         return if stop_at == pass_class
       end
@@ -75,7 +75,7 @@ module Virtual
       run = false
       @passes.each do |pass_class|
         if run
-          puts "running #{pass_class}"
+          #puts "running #{pass_class}"
           run_blocks_for pass_class
         else
           run = true if start_at == pass_class