diff --git a/tools/cheat-builder/build.js b/tools/cheat-builder/build.js
index 32a1fd4..943cbc4 100644
--- a/tools/cheat-builder/build.js
+++ b/tools/cheat-builder/build.js
@@ -11,14 +11,16 @@ const loadlist = async () => {
         return Object.entries(datas).filter(n => n[1] != "????");
     }
     // ---------------修改的代码在这里------------------
-    const entries = Object.entries(datas);
-    const retval = new Array(entries.length);
-    let l = 0;
-    for( const data of entries ){
-        if( data[1] !== "????" ) retval[l++] = data;
+    else {
+        const entries = Object.entries(datas);
+        const retval = new Array(entries.length);
+        let l = 0;
+        for( let i=0; i < entries.length; ++i ){
+            if( entries[i][1] !== "????" ) retval[l++] = entries[i];
+        }
+        retval.length = l;
+        return retval;
     }
-    retval.length = l;
-    return retval;
     // ---------------修改的代码完结处------------------
 }
 
@@ -182,9 +184,10 @@ const start = async () => {
     // ---------------修改的代码在这里------------------
     else
     {
-        const res = new Array(10240), idx = {};
+        const res = new Array(6400), idx = {};
         let l = 0;
-        for( const data of roms ){
+        for( let i=0; i < roms.length; ++i ){
+            const data = roms[i];
             if( !data ) continue;
 
             const { serial, cheat } = data;
diff --git a/tools/cheat-builder/cht.js b/tools/cheat-builder/cht.js
index d4939c4..c27598c 100644
--- a/tools/cheat-builder/cht.js
+++ b/tools/cheat-builder/cht.js
@@ -239,7 +239,8 @@ const assembleCheat = (list, dup, hole) => {
   } 
   // ---------------修改的代码在这里------------------
   else {
-    for( const command of list ){
+    for( let i=0; i < list.length; ++i ){
+      const command = list[i];
       const addr = fromTaddr(command[0]);
       const len = command.length - 1;
       for( let pos=0; pos < len; ++pos) {
@@ -276,7 +277,8 @@ const assembleCheat = (list, dup, hole) => {
   else {
     const blocks = new Array();
     let curr = null;
-    for( const [addr, value] of ordered ){
+    for( let i=0; i < ordered.length; ++i ){
+      const [addr, value] = ordered[i];
       dup.set(addr, hole);
       if( !curr ) {
         curr = { addr, value, count: 1 };