diff --git a/tsvm_core/src/net/torvald/tsvm/peripheral/BlockTransferInterface.kt b/tsvm_core/src/net/torvald/tsvm/peripheral/BlockTransferInterface.kt
index cb3284d..28f0874 100644
--- a/tsvm_core/src/net/torvald/tsvm/peripheral/BlockTransferInterface.kt
+++ b/tsvm_core/src/net/torvald/tsvm/peripheral/BlockTransferInterface.kt
@@ -5,7 +5,7 @@ import java.util.concurrent.atomic.AtomicInteger
 
 abstract class BlockTransferInterface(val isMaster: Boolean, val isSlave: Boolean) {
 
-    protected var recipient: BlockTransferInterface? = null
+    var recipient: BlockTransferInterface? = null; protected set
 
     val ready = AtomicBoolean(true)
     val busy = AtomicBoolean(false)
diff --git a/tsvm_executable/src/net/torvald/tsvm/TevdMenu.kt b/tsvm_executable/src/net/torvald/tsvm/TevdMenu.kt
new file mode 100644
index 0000000..e605a3d
--- /dev/null
+++ b/tsvm_executable/src/net/torvald/tsvm/TevdMenu.kt
@@ -0,0 +1,32 @@
+package net.torvald.tsvm
+
+import com.badlogic.gdx.graphics.Color
+import com.badlogic.gdx.graphics.g2d.SpriteBatch
+import net.torvald.tsvm.VMEmuExecutableWrapper.Companion.FONT
+
+/**
+ * Created by minjaesong on 2023-03-25.
+ */
+class TevdMenu(parent: VMEmuExecutable, x: Int, y: Int, w: Int, h: Int) : EmuMenu(parent, x, y, w, h) {
+
+    override fun show() {
+    }
+
+    override fun hide() {
+    }
+
+    override fun update() {
+    }
+
+    override fun render(batch: SpriteBatch) {
+
+        batch.inUse {
+            batch.color = Color.CORAL
+            FONT.draw(batch, "Tevd!", 12f, 12f)
+        }
+
+    }
+
+    override fun dispose() {
+    }
+}
\ No newline at end of file
diff --git a/tsvm_executable/src/net/torvald/tsvm/VMEmuExecutable.kt b/tsvm_executable/src/net/torvald/tsvm/VMEmuExecutable.kt
index 911570c..3ebb52a 100644
--- a/tsvm_executable/src/net/torvald/tsvm/VMEmuExecutable.kt
+++ b/tsvm_executable/src/net/torvald/tsvm/VMEmuExecutable.kt
@@ -206,6 +206,7 @@ class VMEmuExecutable(val windowWidth: Int, val windowHeight: Int, var panelsX:
         Gdx.input.inputProcessor = if (currentVMselection != null) vms[currentVMselection!!]?.vm?.getIO() ?: null else vmEmuInputProcessor
 
         refreshCardTabs()
+        refreshComTabs()
     }
 
     internal fun initVMenv(vm: VM, profileName: String) {
@@ -418,6 +419,7 @@ class VMEmuExecutable(val windowWidth: Int, val windowHeight: Int, var panelsX:
     private val dummyMenu = DummyMenu(this, menuTabX, menuTabY, menuTabW, menuTabH)
     private val menuRepository = mapOf(
         VM.PERITYPE_SOUND to AudioMenu(this, menuTabX, menuTabY, menuTabW, menuTabH),
+        "TevdDiskDrive" to TevdMenu(this, menuTabX, menuTabY, menuTabW, menuTabH),
         "DUMMY" to dummyMenu
     )
 
@@ -456,6 +458,7 @@ class VMEmuExecutable(val windowWidth: Int, val windowHeight: Int, var panelsX:
                 val menu = menuRepository[periType] ?: dummyMenu
                 menu.cardIndex = i
                 tabs[cardTabIndex + i - 1] = menu
+//                println("Tabs[${cardTabIndex + i - 1}] = $periType")
             }
         }
     }
@@ -464,11 +467,12 @@ class VMEmuExecutable(val windowWidth: Int, val windowHeight: Int, var panelsX:
         val vm = getCurrentlySelectedVM()?.vm
 
         if (vm != null) {
-            for (i in 1..7) {
-                val periType = TODO() ?: "DUMMY"
+            for (i in 0..3) {
+                val periType = vm.getIO().blockTransferPorts[i].recipient?.javaClass?.simpleName ?: "DUMMY"
                 val menu = menuRepository[periType] ?: dummyMenu
                 menu.cardIndex = i // COM will recycle cardIndex
-                tabs[comTabIndex + i - 1] = menu
+                tabs[comTabIndex + i] = menu
+//                println("Tabs[${comTabIndex + i}] = $periType")
             }
         }
     }