new file mode 100644
--- /dev/null
+++ b/packages/io/serial/current/tests/serial_echo.c
@@ -0,0 +1,118 @@
+//==========================================================================
+//
+//        serial_echo.c
+//
+//        Simple interactive echo test.
+//
+//==========================================================================
+//####COPYRIGHTBEGIN####
+//                                                                          
+// -------------------------------------------                              
+// The contents of this file are subject to the Red Hat eCos Public License 
+// Version 1.1 (the "License"); you may not use this file except in         
+// compliance with the License.  You may obtain a copy of the License at    
+// http://www.redhat.com/                                                   
+//                                                                          
+// Software distributed under the License is distributed on an "AS IS"      
+// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.  See the 
+// License for the specific language governing rights and limitations under 
+// the License.                                                             
+//                                                                          
+// The Original Code is eCos - Embedded Configurable Operating System,      
+// released September 30, 1998.                                             
+//                                                                          
+// The Initial Developer of the Original Code is Red Hat.                   
+// Portions created by Red Hat are                                          
+// Copyright (C) 1998, 1999, 2000 Red Hat, Inc.                             
+// All Rights Reserved.                                                     
+// -------------------------------------------                              
+//                                                                          
+//####COPYRIGHTEND####
+//==========================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s):     jskov
+// Contributors:  jskov
+// Date:          2000-04-11
+// Description:   Simple echo test.
+// 
+//####DESCRIPTIONEND####
+
+#include <pkgconf/system.h>
+
+#include <cyg/infra/testcase.h>         // test macros
+#include <cyg/infra/cyg_ass.h>          // assertion macros
+
+// Package requirements
+#if defined(CYGPKG_IO_SERIAL) && defined(CYGPKG_KERNEL)
+
+#include <pkgconf/kernel.h>
+
+// Package option requirements
+#if defined(CYGFUN_KERNEL_API_C)
+
+#include <cyg/hal/hal_arch.h>           // CYGNUM_HAL_STACK_SIZE_TYPICAL
+#include <cyg/kernel/kapi.h>
+unsigned char stack[CYGNUM_HAL_STACK_SIZE_TYPICAL];
+cyg_thread thread_data;
+cyg_handle_t thread_handle;
+
+#include "ser_test_protocol.inl"
+
+//---------------------------------------------------------------------------
+// Serial test main function.
+void
+serial_test( void )
+{
+    cyg_io_handle_t ser_handle;
+    cyg_uint8 in_buffer[1];
+    int len = 1;
+
+    test_open_ser(&ser_handle);
+
+    CYG_TEST_INFO("Kill GDB and open a terminal emulator.");
+    CYG_TEST_INFO("This test will echo all data.");
+
+    while (1) {
+        len = 1;
+        Tcyg_io_read(ser_handle, in_buffer, &len);
+        len = 1;
+        Tcyg_io_write(ser_handle, in_buffer, &len);
+    }
+
+}
+
+void
+cyg_start(void)
+{
+    CYG_TEST_INIT();
+    cyg_thread_create(10,                   // Priority - just a number
+                      (cyg_thread_entry_t*)serial_test,         // entry
+                      0,                    // 
+                      "serial_thread",     // Name
+                      &stack[0],            // Stack
+                      CYGNUM_HAL_STACK_SIZE_TYPICAL,           // Size
+                      &thread_handle,       // Handle
+                      &thread_data          // Thread data structure
+        );
+    cyg_thread_resume(thread_handle);
+    cyg_scheduler_start();
+}
+
+#else // CYGFUN_KERNEL_API_C
+#define N_A_MSG "Needs kernel C API"
+#endif
+
+#else // CYGPKG_IO_SERIAL && CYGPKG_KERNEL
+#define N_A_MSG "Needs IO/serial and Kernel"
+#endif
+
+#ifdef N_A_MSG
+void
+cyg_start( void )
+{
+    CYG_TEST_INIT();
+    CYG_TEST_NA( N_A_MSG);
+}
+#endif // N_A_MSG
+// EOF serial3.c