diff --git a/frontend/src/components/editor/PreviewPane.tsx b/frontend/src/components/editor/PreviewPane.tsx
index d40992d..d1301ca 100644
--- a/frontend/src/components/editor/PreviewPane.tsx
+++ b/frontend/src/components/editor/PreviewPane.tsx
@@ -2,12 +2,11 @@ import { useEditorStore } from "@/stores/editorStore";
 import { renderMicron } from "./micronRenderer";
 import { cn } from "@/lib/utils";
 
-type PreviewMode = "ascii" | "micron" | "raw" | "script";
+type PreviewMode = "micron" | "raw" | "script";
 
 export default function PreviewPane() {
   const previewMode = useEditorStore((s) => s.previewMode);
   const setPreviewMode = useEditorStore((s) => s.setPreviewMode);
-  const compiledAscii = useEditorStore((s) => s.compiledAscii);
   const compiledMicron = useEditorStore((s) => s.compiledMicron);
   const compiledScript = useEditorStore((s) => s.compiledScript);
   const isDynamic = useEditorStore((s) => s.isDynamic);
@@ -15,7 +14,6 @@ export default function PreviewPane() {
   const compileError = useEditorStore((s) => s.compileError);
 
   const tabs: { value: PreviewMode; label: string; show: boolean }[] = [
-    { value: "ascii", label: "ASCII", show: true },
     { value: "micron", label: "Micron", show: true },
     { value: "raw", label: "Raw", show: true },
     { value: "script", label: "Script", show: isDynamic },
@@ -60,15 +58,7 @@ export default function PreviewPane() {
         </div>
       </div>
       <div className="flex-1 bg-background overflow-auto min-h-0">
-        {previewMode === "ascii" ? (
-          <pre className="p-2 font-mono text-[11px] whitespace-pre leading-tight text-green-100/90">
-            {compiledAscii || (
-              <span className="text-muted-foreground">
-                ASCII preview will appear here…
-              </span>
-            )}
-          </pre>
-        ) : previewMode === "micron" ? (
+        {previewMode === "micron" ? (
           compiledMicron ? (
             <div
               className="p-2 font-mono text-[11px] whitespace-pre leading-tight"
diff --git a/frontend/src/stores/editorStore.ts b/frontend/src/stores/editorStore.ts
index 4969fec..931fd39 100644
--- a/frontend/src/stores/editorStore.ts
+++ b/frontend/src/stores/editorStore.ts
@@ -17,7 +17,7 @@ interface EditorStore {
   compileError: string | null;
 
   // Preview
-  previewMode: "ascii" | "micron" | "raw" | "script";
+  previewMode: "micron" | "raw" | "script";
 
   // Actions
   setSource: (s: string) => void;
@@ -26,7 +26,7 @@ interface EditorStore {
   setCompileResult: (ascii: string, micron: string, script: string, isDynamic: boolean, warnings: string[]) => void;
   setCompiling: (v: boolean) => void;
   setCompileError: (e: string | null) => void;
-  setPreviewMode: (mode: "ascii" | "micron" | "raw" | "script") => void;
+  setPreviewMode: (mode: "micron" | "raw" | "script") => void;
   reset: () => void;
 }
 
@@ -43,7 +43,7 @@ export const useEditorStore = create<EditorStore>((set) => ({
   isCompiling: false,
   compileError: null,
 
-  previewMode: "ascii",
+  previewMode: "micron",
 
   setSource: (s) => set({ ufSource: s, isDirty: true }),
   setCurrentPage: (p) => set({ currentPage: p }),
@@ -73,6 +73,6 @@ export const useEditorStore = create<EditorStore>((set) => ({
       compileWarnings: [],
       isCompiling: false,
       compileError: null,
-      previewMode: "ascii",
+      previewMode: "micron",
     }),
 }));