assgin pins for ALU

README.md

@@ -68,3 +68,17 @@ K10: LM
 LR0~LR7: Y0~Y7
 ```
 
+### ALU_parallel_8b
+
+八位并行超前进位运算器。
+
+```
+K0~K7: A0~A7
+K8~K15: B0~B7
+K16~K19: S0~S3
+K20: M
+K21: C0
+LR0~LR7: F0~F7
+LR8: C8
+```
+