diff --git a/A2Mac/Base.lproj/Main.storyboard b/A2Mac/Base.lproj/Main.storyboard
index 89198fa..0f86f92 100644
--- a/A2Mac/Base.lproj/Main.storyboard
+++ b/A2Mac/Base.lproj/Main.storyboard
@@ -686,8 +686,7 @@
                 <windowController id="B8D-0N-5wS" sceneMemberID="viewController">
                     <window key="window" title="Window" allowsToolTipsWhenApplicationIsInactive="NO" autorecalculatesKeyViewLoop="NO" releasedWhenClosed="NO" visibleAtLaunch="NO" animationBehavior="default" id="IQv-IB-iLA">
                         <windowStyleMask key="styleMask" titled="YES" closable="YES" miniaturizable="YES" resizable="YES"/>
-                        <windowPositionMask key="initialPositionMask" leftStrut="YES" rightStrut="YES" topStrut="YES" bottomStrut="YES"/>
-                        <rect key="contentRect" x="196" y="240" width="480" height="270"/>
+                        <rect key="contentRect" x="196" y="240" width="480" height="440"/>
                         <rect key="screenRect" x="0.0" y="0.0" width="1680" height="1027"/>
                         <connections>
                             <outlet property="delegate" destination="B8D-0N-5wS" id="98r-iN-zZc"/>
@@ -706,16 +705,16 @@
             <objects>
                 <viewController id="XfG-lQ-9wD" customClass="ViewController" customModule="A2Mac" customModuleProvider="target" sceneMemberID="viewController">
                     <view key="view" id="m2S-Jp-Qdl">
-                        <rect key="frame" x="0.0" y="0.0" width="480" height="270"/>
-                        <autoresizingMask key="autoresizingMask"/>
+                        <rect key="frame" x="0.0" y="0.0" width="480" height="440"/>
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                         <subviews>
-                            <textField verticalHuggingPriority="750" horizontalCompressionResistancePriority="250" fixedFrame="YES" translatesAutoresizingMaskIntoConstraints="NO" id="Uza-t6-XSw">
-                                <rect key="frame" x="20" y="20" width="440" height="235"/>
-                                <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
-                                <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" selectable="YES" allowsUndo="NO" sendsActionOnEndEditing="YES" state="on" borderStyle="bezel" drawsBackground="YES" id="5AO-Gd-Lzo">
-                                    <font key="font" metaFont="fixedUser" size="11"/>
-                                    <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
-                                    <color key="backgroundColor" name="textBackgroundColor" catalog="System" colorSpace="catalog"/>
+                            <textField verticalHuggingPriority="750" horizontalCompressionResistancePriority="250" fixedFrame="YES" textCompletion="NO" translatesAutoresizingMaskIntoConstraints="NO" id="Uza-t6-XSw">
+                                <rect key="frame" x="10" y="10" width="460" height="420"/>
+                                <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                                <textFieldCell key="cell" scrollable="YES" lineBreakMode="clipping" selectable="YES" enabled="NO" refusesFirstResponder="YES" allowsUndo="NO" sendsActionOnEndEditing="YES" state="on" borderStyle="border" alignment="center" placeholderString="Apple ][ Emulator Virtual Monitor" drawsBackground="YES" allowsEditingTextAttributes="YES" id="5AO-Gd-Lzo">
+                                    <font key="font" size="14" name="Courier-Bold"/>
+                                    <color key="textColor" name="systemGreenColor" catalog="System" colorSpace="catalog"/>
+                                    <color key="backgroundColor" red="0.12549019607843137" green="0.17933968321917809" blue="0.12549019607843137" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
                                 </textFieldCell>
                             </textField>
                         </subviews>
diff --git a/A2Mac/ViewController.swift b/A2Mac/ViewController.swift
index 712f611..b1d8dd3 100644
--- a/A2Mac/ViewController.swift
+++ b/A2Mac/ViewController.swift
@@ -12,14 +12,54 @@ class ViewController: NSViewController {
 
     @IBOutlet weak var display: NSTextFieldCell!
     
-    func check() {
-        let textBufferPointer = UnsafeRawBufferPointer(start: &RAM+0x400, count: 0x400)
-//        let string = String(bytes: ram, encoding: .utf8)
-//        print(string)
+    static let charConvStr : String =
+        "@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_ !\"#$%&'()*+,-./0123456789:;<=>?" +
+        "@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_ !\"#$%&'()*+,-./0123456789:;<=>?" +
+        "@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_ !\"#$%&'()*+,-./0123456789:;<=>?" +
+        "@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~?"
+    
+    static let charConvTbl = Array( charConvStr )
+
+    let textLineOfs : [Int] = [
+        0x000, 0x080, 0x100, 0x180, 0x200, 0x280, 0x300, 0x380, 0x028, 0x0A8, 0x128, 0x1A8,
+        0x228, 0x2A8, 0x328, 0x3A8, 0x050, 0x0D0, 0x150, 0x1D0, 0x250, 0x2D0, 0x350, 0x3D0
+    ]
+    
+    func update() {
         
-        for (index, byte) in textBufferPointer.enumerated() {
-            print("byte \(index): \(byte)")
+        while true {
+            usleep(33333) // 1/30 sec
+
+            let textBaseAddr = 0x400
+            let textLines = 24
+            let textCols = 40
+            
+            var txt : String = "|"
+
+            for y in 0...textLines-1 {
+                let textAddr = textBaseAddr + textLineOfs[y]
+                let textBufferPointer = UnsafeRawBufferPointer(start: &RAM + textAddr, count: textCols)
+
+                for (index, byte) in textBufferPointer.enumerated() {
+                    let idx = Int(byte);
+                    let chr = ViewController.charConvTbl[idx]
+        //            print("byte \(index): \(chr)")
+                    txt = txt + [chr]
+                }
+                
+                txt = txt + "|\n|"
+            }
+            
+            
+            DispatchQueue.main.async {
+                self.display.stringValue = txt;
+            }
         }
+        
+//        DispatchQueue.main.asyncAfter(deadline: .now() + 1/30, execute: {
+//            self.update()
+//        })
+
     }
     
     
@@ -67,10 +107,14 @@ class ViewController: NSViewController {
 //        }
 
 
-//        DispatchQueue.main.asyncAfter(deadline: .now() + 5.0, execute: {
-//            self.check()
+//        DispatchQueue.main.asyncAfter(deadline: .now() + 1/30, execute: {
+//            self.update()
 //        })
         
+        DispatchQueue.global(qos: .background).async {
+            self.update()
+        }
+
     }
 
     override var representedObject: Any? {
diff --git a/A2Mac/instructions/6502_instr_load_store.h b/A2Mac/instructions/6502_instr_load_store.h
index d325a54..2096af0 100644
--- a/A2Mac/instructions/6502_instr_load_store.h
+++ b/A2Mac/instructions/6502_instr_load_store.h
@@ -98,6 +98,7 @@ static inline void STR( uint8_t * dst, uint8_t imm ) {
 //        if (( imm > ' ' ) && ( c < 0x7F ))
 //            printf("%04X: t:%02X '%c'\n", v, imm, isprint(c) ? c : ' ');
 //    }
+
 }
 
 /**