更新 'README.md'

README.md

@@ -9,3 +9,7 @@ riscv_demo/
 │ └── testbench.v # 测试激励  
 └── scripts/  
 └── run_all.tcl # Palladium Z2 脚本  
+
+```
+xrun -64bit -access +rwc -sv design/top.v testbench/testbench.v -top testbench
+```