new file mode 100644
--- /dev/null
+++ b/packages/io/serial/current/tests/serial3.c
@@ -0,0 +1,150 @@
+//==========================================================================
+//
+//        serial3.c
+//
+//        Test data half-duplex receive and send.
+//
+//==========================================================================
+//####COPYRIGHTBEGIN####
+//
+// -------------------------------------------
+// The contents of this file are subject to the Cygnus eCos Public License
+// Version 1.0 (the "License"); you may not use this file except in
+// compliance with the License.  You may obtain a copy of the License at
+// http://sourceware.cygnus.com/ecos
+// 
+// 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 Cygnus Operating System, released
+// September 30, 1998.
+// 
+// The Initial Developer of the Original Code is Cygnus.  Portions created
+// by Cygnus are Copyright (C) 1998, 1999 Cygnus Solutions.  
+// All Rights Reserved.
+// -------------------------------------------
+//
+//####COPYRIGHTEND####
+//==========================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s):     jskov
+// Contributors:  jskov
+// Date:          1999-03-17
+// Description:   Test the half-duplex receive and send capabilities of 
+//                the serial driver.
+// Requirements:  This test requires the ser_filter on the host side.
+// 
+//####DESCRIPTIONEND####
+
+#include <pkgconf/system.h>
+
+#include <cyg/infra/testcase.h>         // test macros
+#include <cyg/infra/cyg_ass.h>          // assertion macros
+
+#if defined(CYGPKG_IO_SERIAL) && defined(CYGPKG_KERNEL)
+
+#ifdef CYGPKG_KERNEL
+#include <pkgconf/kernel.h>
+#ifdef 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;
+#endif
+#endif
+
+#include "ser_test_protocol.inl"
+
+//---------------------------------------------------------------------------
+// Serial test main function.
+void
+serial_test( void )
+{
+    cyg_io_handle_t ser_handle;
+
+    test_open_ser(&ser_handle);
+
+    // We need the filter for this test.
+    test_ping(ser_handle);
+
+#if defined(CYGPKG_HAL_ARM_AEB)
+    {
+        // The AEB board is too slow to run the driver in interrupt mode
+        // at the default 38400 baud when doing this test.
+        cyg_ser_cfg_t arm_aeb_cfg = { 
+            CYGNUM_SERIAL_BAUD_14400, CYGNUM_SERIAL_WORD_LENGTH_8, 
+            CYGNUM_SERIAL_STOP_1, CYGNUM_SERIAL_PARITY_NONE };
+
+        change_config(ser_handle, &arm_aeb_cfg);
+    }
+#endif
+
+    // Start slowly, the go for max size.
+    {
+        test_binary(ser_handle,             16, MODE_EOP_ECHO);
+        test_binary(ser_handle,            128, MODE_EOP_ECHO);
+        test_binary(ser_handle,            256, MODE_EOP_ECHO);
+        test_binary(ser_handle, IN_BUFFER_SIZE, MODE_EOP_ECHO);
+    }
+
+    // Write some varying length packets.
+    {
+        int i;
+        for(i = 0; i < 8; i++) {
+            // No echo.
+            test_binary(ser_handle,   256 + 42*i, MODE_NO_ECHO);
+            test_binary(ser_handle,    64 +  7*i, MODE_NO_ECHO);
+            // Echo.
+            test_binary(ser_handle,   256 + 42*i, MODE_EOP_ECHO);
+            test_binary(ser_handle,    64 +  7*i, MODE_EOP_ECHO);
+        }
+    }
+
+#if 0 // Disable this for now.
+    // End with some long packets.
+    {
+        test_binary(ser_handle,  2048, MODE_NO_ECHO);
+        test_binary(ser_handle, 16384, MODE_NO_ECHO);
+        test_binary(ser_handle, 65536, MODE_NO_ECHO);
+    }
+#endif
+
+    CYG_TEST_PASS_FINISH("serial3 test OK");
+}
+
+void
+cyg_start(void)
+{
+    CYG_TEST_INIT();
+#ifdef CYGFUN_KERNEL_API_C
+    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
+    serial_test();
+#endif
+}
+
+#else // ifdef CYGPKG_IO_SERIAL
+
+void
+cyg_start(void)
+{
+    CYG_TEST_INIT();
+    CYG_TEST_NA("Requires serial device driver and kernel");
+}
+
+#endif
+// EOF serial3.c