diff --git a/assets/serialtest.js b/assets/serialtest.js
index eefd4ce..c795c4d 100644
--- a/assets/serialtest.js
+++ b/assets/serialtest.js
@@ -1,14 +1,7 @@
-var ba = com.sendMessageGetBytes(0, [0x44,0x45,0x56,0x4e,0x41,0x4d,0x17]);
+var ba = com.sendMessageGetBytes(0, "DEVNAM"+String.fromCharCode(0x17));
 serial.println(ba);
-for (let k = 0; k < ba.length; k++) {
-    serial.print(String.fromCharCode(ba[k]));
-}
-serial.print("\n");
 
 ba = com.pullMessage(0)
-for (let k = 0; k < ba.length; k++) {
-    serial.print(String.fromCharCode(ba[k]));
-}
-serial.print("\n");
+serial.println(ba);
 
 serial.println("\nk bye")
\ No newline at end of file
diff --git a/src/net/torvald/tsvm/SerialHelper.kt b/src/net/torvald/tsvm/SerialHelper.kt
index 5150cbe..4857745 100644
--- a/src/net/torvald/tsvm/SerialHelper.kt
+++ b/src/net/torvald/tsvm/SerialHelper.kt
@@ -83,8 +83,7 @@ object SerialHelper {
     }
 
     fun waitUntilReady(vm: VM, portNo: Int) {
-        Thread.sleep(SLEEP_TIME)
-        //while (!checkIfDeviceIsReady(vm, portNo)) { Thread.sleep(SLEEP_TIME) }
+        while (!checkIfDeviceIsReady(vm, portNo)) { Thread.sleep(SLEEP_TIME) }
     }
 
 
@@ -92,7 +91,7 @@ object SerialHelper {
         (vm.getIO().mmio_read(4092L + portNo)!! and 1.toByte()) == 1.toByte()
 
     private fun checkIfDeviceIsReady(vm: VM, portNo: Int) =
-        (vm.getIO().mmio_read(4092L + portNo)!! and 0b110.toByte()) == 0b011.toByte()
+        (vm.getIO().mmio_read(4092L + portNo)!! and 0b111.toByte()) == 0b011.toByte()
 
     private fun initiateWriting(vm: VM, portNo: Int) {
         vm.getIO().mmio_write(4092L + portNo, 0b1110)
@@ -130,10 +129,10 @@ object SerialHelper {
 }
 
 class SerialHelperDelegate(val vm: VM) {
-    fun sendMessage(portNo: Int, message: ByteArray) = SerialHelper.sendMessage(vm, portNo, message)
-    fun pullMessage(portNo: Int) = SerialHelper.pullMessage(vm, portNo)
-    fun sendMessageGetBytes(portNo: Int, message: ByteArray) = SerialHelper.sendMessageGetBytes(vm, portNo, message)
-    fun fetchResponse(portNo: Int) = SerialHelper.fetchResponse(vm, portNo)
+    fun sendMessage(portNo: Int, message: String) = SerialHelper.sendMessage(vm, portNo, message.toByteArray(VM.CHARSET))
+    fun pullMessage(portNo: Int) = SerialHelper.pullMessage(vm, portNo).toString(VM.CHARSET)
+    fun sendMessageGetBytes(portNo: Int, message: String) = SerialHelper.sendMessageGetBytes(vm, portNo, message.toByteArray(VM.CHARSET)).toString(VM.CHARSET)
+    fun fetchResponse(portNo: Int) = SerialHelper.fetchResponse(vm, portNo).toString(VM.CHARSET)
     fun getDeviceStatus(portNo: Int) = SerialHelper.getDeviceStatus(vm, portNo)
     fun waitUntilReady(portNo: Int) = SerialHelper.waitUntilReady(vm, portNo)
 }
\ No newline at end of file