diff --git a/README.md b/README.md
index 3b81c8d..1c6b28d 100644
--- a/README.md
+++ b/README.md
@@ -79,13 +79,13 @@ Counting number of instructions by `wc -l $file.hack`
 
 ### Without Symbols
 
-- [ ] `MaxL.asm`
-- [ ] `RectL.asm`
-- [ ] `PongL.asm`
+- [x] `MaxL.asm`
+- [x] `RectL.asm`
+- [x] `PongL.asm`
+- [x] `Add.asm`
 
 ### Symbolic Programs
 
-- [ ] `Add.asm`
 - [ ] `Max.asm`
 - [ ] `Rect.asm`
 - [ ] `Pong.asm`
diff --git a/assembler/assembler.rb b/assembler/assembler.rb
index 04e056b..a9dc69a 100644
--- a/assembler/assembler.rb
+++ b/assembler/assembler.rb
@@ -103,10 +103,10 @@ class Parser
   end
 
   def comp
-    if dest and jump
+    if dest && jump
       line.split('=').last.split(';').first
     elsif dest
-      line.split('=').first
+      line.split('=').last
     elsif jump
       line.split(';').first
     else
diff --git a/assembler/test b/assembler/test
index bb2654f..96e37ea 100755
--- a/assembler/test
+++ b/assembler/test
@@ -1,19 +1,5 @@
-#!/bin/sh
-pushd ../projects/06/add
-../../../tools/Assembler.sh Add.asm
-popd
-
-pushd ../projects/06/max
-../../../tools/Assembler.sh Max.asm
-../../../tools/Assembler.sh MaxL.asm
-popd
-
-pushd ../projects/06/rect
-../../../tools/Assembler.sh Rect.asm
-../../../tools/Assembler.sh RectL.asm
-popd
-
-pushd ../projects/06/pong
-../../../tools/Assembler.sh Pong.asm
-../../../tools/Assembler.sh PongL.asm
-popd
+#!/bin/bash
+diff ../projects/06/add/Add.hack <(ruby assembler.rb ../projects/06/add/Add.asm)
+diff ../projects/06/max/MaxL.hack <(ruby assembler.rb ../projects/06/max/MaxL.asm)
+diff ../projects/06/rect/RectL.hack <(ruby assembler.rb ../projects/06/rect/RectL.asm)
+diff ../projects/06/pong/PongL.hack <(ruby assembler.rb ../projects/06/pong/PongL.asm)