diff --git a/decoder8086.odin b/decoder8086.odin
index 034d50a..2aaaeac 100644
--- a/decoder8086.odin
+++ b/decoder8086.odin
@@ -72,6 +72,24 @@ main :: proc() {
         inst_map[inst.encoding] = inst
     }
 
+    if true {
+        for i in 0..<bytes_read {
+            fmt.printfln("%b", data[i])
+            mask: u8 = 0b11111111
+            for i in 0..=4 {
+                encoding := data[i] & mask
+                if inst, ok := inst_map[encoding]; ok {
+                    fmt.printfln("%b, %v", encoding, inst.desc)
+                    // fmt.println(inst.desc)
+                    break
+                }
+                mask <<= 1
+            }
+            // fmt.println("=============")
+        }
+        os.exit(0)
+    }
+
     read_next := false
     src_dst := true
     is_word := false