修复默认不是 16 进制渲染格式的问题 | 修复有符号数字计算错误的问题 | 给高位宽的数字加上前缀 0

public/index.html

@@ -16,8 +16,8 @@
 
     <script>
         window.readVcdFile = async () => {
-            let inputVcdFile = 'movAvg.vcd';
-            let inputViewFile = 'movAvg.view';
+            let inputVcdFile = 'test.vcd';
+            let inputViewFile = 'test.view';
             const response = await fetch(inputVcdFile);
             const arrayBuffer = await response.arrayBuffer();            
             return [arrayBuffer, inputVcdFile, inputViewFile];