diff --git a/NEWS.md b/NEWS.md
index 0c872a63..c73ac568 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -110,6 +110,7 @@ Red Panda C++ Version 2.27
   - Change: Change background color for highlighted buttons in the default theme.
   - enhancement: Make colors in code suggestion popup consistent with the editor.
   - enhancement: Make colors in header suggestion popup consistent with the editor.
+  - fix: C++ source after ';' are treated as comments in cpu info window.
     
 Red Panda C++ Version 2.26
   - enhancement: Code suggestion for embedded std::vectors.
diff --git a/RedPandaIDE/editor.cpp b/RedPandaIDE/editor.cpp
index f0c5031e..183d9446 100644
--- a/RedPandaIDE/editor.cpp
+++ b/RedPandaIDE/editor.cpp
@@ -2093,10 +2093,7 @@ void Editor::onTooltipTimer()
         }
     }
     if (reason == TipType::Number) {
-        if ((syntaxer()->language() != QSynedit::ProgrammingLanguage::Assembly
-             && syntaxer()->language() != QSynedit::ProgrammingLanguage::ATTAssembly
-             )
-            ) {
+        if (!QSynedit::isAssemblyLanguage(syntaxer()->language())) {
             reason=TipType::None;
         }
     }
@@ -2130,9 +2127,7 @@ void Editor::onTooltipTimer()
         }
         break;
     case TipType::Keyword:
-        if ((syntaxer()->language() == QSynedit::ProgrammingLanguage::Assembly
-             || syntaxer()->language() == QSynedit::ProgrammingLanguage::ATTAssembly)
-                ) {
+        if (QSynedit::isAssemblyLanguage(syntaxer()->language())) {
             if (!mCompletionPopup->isVisible()
                  && !mHeaderCompletionPopup->isVisible()) {
                 s = wordAtRowCol(p);
@@ -2200,9 +2195,7 @@ void Editor::onTooltipTimer()
         }
         break;
     case TipType::Number:
-        if ((syntaxer()->language() == QSynedit::ProgrammingLanguage::Assembly
-             || syntaxer()->language() == QSynedit::ProgrammingLanguage::ATTAssembly)
-                ) {
+        if (QSynedit::isAssemblyLanguage(syntaxer()->language())) {
             bool neg=false;
             qlonglong val;
             bool ok;
@@ -2226,9 +2219,7 @@ void Editor::onTooltipTimer()
         break;
     case TipType::Keyword:
         if (pSettings->editor().enableIdentifierToolTips()) {
-            if ((syntaxer()->language() == QSynedit::ProgrammingLanguage::Assembly
-                 || syntaxer()->language() == QSynedit::ProgrammingLanguage::ATTAssembly)
-                    ) {
+            if (QSynedit::isAssemblyLanguage(syntaxer()->language())) {
                 hint = QSynedit::ASMSyntaxer::Instructions.value(s.toLower(),"");
             }
         }
diff --git a/RedPandaIDE/syntaxermanager.cpp b/RedPandaIDE/syntaxermanager.cpp
index f8553908..c85a19c4 100644
--- a/RedPandaIDE/syntaxermanager.cpp
+++ b/RedPandaIDE/syntaxermanager.cpp
@@ -43,6 +43,10 @@ QSynedit::PSyntaxer SyntaxerManager::getSyntaxer(QSynedit::ProgrammingLanguage l
         return std::make_shared<QSynedit::ASMSyntaxer>();
     case QSynedit::ProgrammingLanguage::ATTAssembly:
         return std::make_shared<QSynedit::ASMSyntaxer>(true);
+    case QSynedit::ProgrammingLanguage::MixedAssembly:
+        return std::make_shared<QSynedit::ASMSyntaxer>(false, true);
+    case QSynedit::ProgrammingLanguage::MixedATTAssembly:
+        return std::make_shared<QSynedit::ASMSyntaxer>(true, true);
     case QSynedit::ProgrammingLanguage::Makefile:
         return std::make_shared<QSynedit::MakefileSyntaxer>();
     case QSynedit::ProgrammingLanguage::GLSL:
diff --git a/RedPandaIDE/widgets/cpudialog.cpp b/RedPandaIDE/widgets/cpudialog.cpp
index b397646e..bbe2568c 100644
--- a/RedPandaIDE/widgets/cpudialog.cpp
+++ b/RedPandaIDE/widgets/cpudialog.cpp
@@ -33,7 +33,7 @@ CPUDialog::CPUDialog(QWidget *parent) :
     setWindowFlags(windowFlags() | Qt::WindowMinimizeButtonHint | Qt::WindowMaximizeButtonHint);
     setWindowFlag(Qt::WindowContextHelpButtonHint,false);
     ui->setupUi(this);
-    ui->txtCode->setSyntaxer(syntaxerManager.getSyntaxer(QSynedit::ProgrammingLanguage::Assembly));
+    updateSyntaxer();
     ui->txtCode->setReadOnly(true);
     ui->txtCode->gutter().setShowLineNumbers(false);
     ui->txtCode->setCaretUseTextColor(true);
@@ -47,8 +47,6 @@ CPUDialog::CPUDialog(QWidget *parent) :
     options.setFlag(QSynedit::EditorOption::eoScrollPastEof,false);
     options.setFlag(QSynedit::EditorOption::eoScrollPastEol,false);
     ui->txtCode->setOptions(options);
-    syntaxerManager.applyColorScheme(ui->txtCode->syntaxer(),
-                                        pSettings->editor().colorScheme());
     PColorSchemeItem item = pColorManager->getItem(pSettings->editor().colorScheme(),COLOR_SCHEME_ACTIVE_LINE);
     if (item) {
         ui->txtCode->setActiveLineColor(item->background());
@@ -132,6 +130,8 @@ void CPUDialog::setDisassembly(const QString& file, const QString& funcName,cons
         }
     }
     ui->txtCode->document()->setContents(lines);
+    ui->txtCode->reparseDocument();
+    ui->txtCode->invalidate();
     if (activeLine!=-1)
         ui->txtCode->setCaretXYCentered(QSynedit::BufferCoord{1,activeLine+1});
     mSetting=false;
@@ -157,6 +157,23 @@ void CPUDialog::sendSyntaxCommand()
     pMainWindow->debugger()->setDisassemblyLanguage(ui->rdIntel->isChecked());
 }
 
+void CPUDialog::updateSyntaxer()
+{
+    if (pSettings->debugger().blendMode()) {
+        if (pSettings->debugger().useIntelStyle())
+            ui->txtCode->setSyntaxer(syntaxerManager.getSyntaxer(QSynedit::ProgrammingLanguage::MixedAssembly));
+        else
+            ui->txtCode->setSyntaxer(syntaxerManager.getSyntaxer(QSynedit::ProgrammingLanguage::MixedATTAssembly));
+    } else {
+        if (pSettings->debugger().useIntelStyle())
+            ui->txtCode->setSyntaxer(syntaxerManager.getSyntaxer(QSynedit::ProgrammingLanguage::Assembly));
+        else
+            ui->txtCode->setSyntaxer(syntaxerManager.getSyntaxer(QSynedit::ProgrammingLanguage::ATTAssembly));
+    }
+    syntaxerManager.applyColorScheme(ui->txtCode->syntaxer(),
+                                        pSettings->editor().colorScheme());
+}
+
 void CPUDialog::closeEvent(QCloseEvent *event)
 {
     pSettings->ui().setCPUDialogWidth(width());
@@ -174,6 +191,7 @@ void CPUDialog::on_rdIntel_toggled(bool)
     updateInfo();
     pSettings->debugger().setUseIntelStyle(ui->rdIntel->isChecked());
     pSettings->debugger().save();
+    updateSyntaxer();
 }
 
 void CPUDialog::on_rdATT_toggled(bool)
@@ -181,6 +199,7 @@ void CPUDialog::on_rdATT_toggled(bool)
     updateInfo();
     pSettings->debugger().setUseIntelStyle(ui->rdIntel->isChecked());
     pSettings->debugger().save();
+    updateSyntaxer();
 }
 
 void CPUDialog::on_chkBlendMode_stateChanged(int)
@@ -188,6 +207,7 @@ void CPUDialog::on_chkBlendMode_stateChanged(int)
     updateInfo();
     pSettings->debugger().setBlendMode(ui->chkBlendMode->isCheckable());
     pSettings->debugger().save();
+    updateSyntaxer();
 }
 
 void CPUDialog::on_btnStepOverInstruction_clicked()
diff --git a/RedPandaIDE/widgets/cpudialog.h b/RedPandaIDE/widgets/cpudialog.h
index 6e3c1d41..cb6f4419 100644
--- a/RedPandaIDE/widgets/cpudialog.h
+++ b/RedPandaIDE/widgets/cpudialog.h
@@ -41,6 +41,7 @@ signals:
     void closed();
 private:
     void sendSyntaxCommand();
+    void updateSyntaxer();
 private:
     Ui::CPUDialog *ui;
     bool mInited;
diff --git a/libs/qsynedit/qsynedit/qsynedit.cpp b/libs/qsynedit/qsynedit/qsynedit.cpp
index 2be54273..50c3bfbf 100644
--- a/libs/qsynedit/qsynedit/qsynedit.cpp
+++ b/libs/qsynedit/qsynedit/qsynedit.cpp
@@ -4662,12 +4662,9 @@ void QSynEdit::setSyntaxer(const PSyntaxer &syntaxer)
     if (oldSyntaxer ->language() != syntaxer->language()) {
         recalcCharExtent();
         mDocument->beginUpdate();
-        auto action=finally([this]{
-            mDocument->endUpdate();
-        });
         reparseDocument();
+        mDocument->endUpdate();
     }
-    //onSizeOrFontChanged(true);
     invalidate();
 }
 
diff --git a/libs/qsynedit/qsynedit/qsynedit.h b/libs/qsynedit/qsynedit/qsynedit.h
index d0bb1a9d..d7476aea 100644
--- a/libs/qsynedit/qsynedit/qsynedit.h
+++ b/libs/qsynedit/qsynedit/qsynedit.h
@@ -387,6 +387,7 @@ public:
     int selCount() const;
 
     QStringList getContent(BufferCoord startPos, BufferCoord endPos, SelectionMode mode) const;
+    void reparseDocument();
 
     QString lineBreak() const;
 
@@ -538,7 +539,6 @@ private:
     void updateModifiedStatus();
     void reparseLines(int startLine, int endLine);
     //void reparseLine(int line);
-    void reparseDocument();
     void uncollapse(PCodeFoldingRange FoldRange);
     void collapse(PCodeFoldingRange FoldRange);
 
diff --git a/libs/qsynedit/qsynedit/syntaxer/asm.cpp b/libs/qsynedit/qsynedit/syntaxer/asm.cpp
index 65e0676d..7c537a77 100644
--- a/libs/qsynedit/qsynedit/syntaxer/asm.cpp
+++ b/libs/qsynedit/qsynedit/syntaxer/asm.cpp
@@ -147,8 +147,9 @@ const QSet<QString> ASMSyntaxer::ATTDirectives {
     ".zero",".2byte",".4byte",".8byte"
 };
 
-ASMSyntaxer::ASMSyntaxer(bool isATT):
-    mATT(isATT)
+ASMSyntaxer::ASMSyntaxer(bool isATT, bool isCppMixed):
+    mATT{isATT},
+    mCppMixed{isCppMixed}
 {
     initData();
     mNumberAttribute = std::make_shared<TokenAttribute>(SYNS_AttrNumber, TokenType::Number);
@@ -1661,7 +1662,7 @@ void ASMSyntaxer::next()
         SlashProc();
         break;
     case ';':
-        if (mATT) {
+        if (mATT || mCppMixed) {
             SymbolProc();
         } else
             CommentProc();
diff --git a/libs/qsynedit/qsynedit/syntaxer/asm.h b/libs/qsynedit/qsynedit/syntaxer/asm.h
index 3fc96701..ab0c1ce2 100644
--- a/libs/qsynedit/qsynedit/syntaxer/asm.h
+++ b/libs/qsynedit/qsynedit/syntaxer/asm.h
@@ -44,7 +44,7 @@ class ASMSyntaxer : public Syntaxer
     };
 
 public:
-    explicit ASMSyntaxer(bool isATT=false);
+    explicit ASMSyntaxer(bool isATT=false, bool isCppMixed=false);
     ASMSyntaxer(const ASMSyntaxer&)=delete;
     ASMSyntaxer& operator=(const ASMSyntaxer&)=delete;
 
@@ -74,6 +74,7 @@ private:
     PTokenAttribute mRegisterAttribute;
     PTokenAttribute mLabelAttribute;
     bool mATT;
+    bool mCppMixed;
     QSet<QString> mKeywordsCache;
 
 private:
diff --git a/libs/qsynedit/qsynedit/types.cpp b/libs/qsynedit/qsynedit/types.cpp
index 4a9972ab..969e5ff5 100644
--- a/libs/qsynedit/qsynedit/types.cpp
+++ b/libs/qsynedit/qsynedit/types.cpp
@@ -54,4 +54,12 @@ bool BufferCoord::operator!=(const BufferCoord &coord)
     return coord.ch != ch || coord.line != line;
 }
 
+bool isAssemblyLanguage(ProgrammingLanguage lang)
+{
+    return lang == ProgrammingLanguage::Assembly
+            || lang == ProgrammingLanguage::ATTAssembly
+            || lang == ProgrammingLanguage::MixedAssembly
+            || lang == ProgrammingLanguage::MixedATTAssembly;
+}
+
 }
diff --git a/libs/qsynedit/qsynedit/types.h b/libs/qsynedit/qsynedit/types.h
index 5dff5fa7..c4047407 100644
--- a/libs/qsynedit/qsynedit/types.h
+++ b/libs/qsynedit/qsynedit/types.h
@@ -31,6 +31,8 @@ enum class ProgrammingLanguage {
     Composition,
     Assembly,
     ATTAssembly,
+    MixedAssembly,
+    MixedATTAssembly,
     CPP,
     GLSL,
     Makefile,
@@ -87,6 +89,7 @@ using PEditingArea = std::shared_ptr<EditingArea>;
 using EditingAreaList = QList<PEditingArea>;
 using PEditingAreaList = std::shared_ptr<EditingAreaList>;
 
+bool isAssemblyLanguage(ProgrammingLanguage lang);
 }
 
 #endif // TYPES_H