diff --git a/README.md b/README.md
index bca9d04..bcdb9e2 100644
--- a/README.md
+++ b/README.md
@@ -1,13 +1,27 @@
 # cpu-emulator
 tiny x86 cpu emulator
 
-## Usage
-
+## Installation
 ```
 $ git clone http://github.com/tuz358/cpu-emulator.git
 $ cd ./cpu-emulator
 $ make
+```
+
+## Sample
+```
 $ ./cpu-emulator sample/fibonacci.bin
+hlt called.
+eax = 0x00000037 (55)
+ecx = 0x00000000 (0)
+edx = 0x00000015 (21)
+ebx = 0x00000022 (34)
+esp = 0x00000400 (1024)
+ebp = 0x00000000 (0)
+esi = 0x00000000 (0)
+edi = 0x00000000 (0)
+eip = 0x00000000 (0)
+$
 ```
 
 ## Author