diff --git a/data.py b/data.py
new file mode 100644
index 0000000..4e2415e
--- /dev/null
+++ b/data.py
@@ -0,0 +1,54 @@
+from math import log2
+from random import randint
+
+DATANUM = 10000
+
+setNum = 2
+offsetBits = 7
+tagBits = 21
+
+# setNum = int(input("Set: "))
+# offsetBits = int(input("offset bits: "))
+# tagBits = int(input("tag bits: "))
+
+print("-machine(in bits)  32")
+print("-total_cache_size(in KB) 1")
+print("-num_cache_way 1")
+print("-block_size(in bytes) 512")
+print("")
+
+
+for i in range(DATANUM):
+    ans = []
+
+    tagTouchBits = 4
+    for i in range(tagBits-tagTouchBits):
+        ans.append(0)
+    for i in range(tagTouchBits):
+        ans.append(randint(0, 1))
+
+    setBits = int(log2(setNum))
+    for i in range(setBits):
+        ans.append(randint(0, 1))
+
+    for i in range(offsetBits):
+        ans.append(randint(0, 1))
+    
+    # print(ans)
+    
+    charStr = ""
+    index = 0
+    output = ""
+    for i in ans:
+        charStr += str(i)
+        index += 1
+        if index == 4:
+            # print(charStr)
+            base2 = int(charStr, 2)
+            # print("base 2:", base2)
+            output += hex(base2)[-1]
+            charStr = ""
+            index = 0
+    
+    typeNum = randint(0, 1)
+    print("{} 0x{}".format("R" if typeNum else "W", output))
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