new file mode 100644
--- /dev/null
+++ b/packages/io/serial/current/include/ttyio.h
@@ -0,0 +1,78 @@
+#ifndef CYGONCE_TTYIO_H
+#define CYGONCE_TTYIO_H
+// ====================================================================
+//
+//      ttyio.h
+//
+//      Device I/O 
+//
+// ====================================================================
+//####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):   gthomas
+// Contributors:        gthomas
+// Date:        1999-02-04
+// Purpose:     Special support for tty I/O devices
+// Description:
+//
+//####DESCRIPTIONEND####
+//
+// ====================================================================
+
+// This file contains the user-level visible I/O interfaces
+
+#include <pkgconf/hal.h>
+#include <cyg/infra/cyg_type.h>
+#include <cyg/io/serialio.h>
+#include <cyg/io/config_keys.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+    cyg_uint32         tty_out_flags;
+    cyg_uint32         tty_in_flags;
+} cyg_tty_info_t;
+
+// TTY flags - used to control behaviour when sending data to tty
+#define CYG_TTY_OUT_FLAGS_CRLF  0x0001  // Map '\n' => '\n\r' on output
+
+#define CYG_TTY_OUT_FLAGS_DEFAULT (CYG_TTY_OUT_FLAGS_CRLF)
+
+// TTY flags - used to control behaviour when receiving data from tty
+#define CYG_TTY_IN_FLAGS_CR      0x0001  // Map '\r' => '\n' on input
+#define CYG_TTY_IN_FLAGS_CRLF    0x0002  // Map '\n\r' => '\n' on input
+#define CYG_TTY_IN_FLAGS_ECHO    0x0004  // Echo characters as processed
+#define CYG_TTY_IN_FLAGS_BINARY  0x0008  // No input processing
+
+#define CYG_TTY_IN_FLAGS_DEFAULT (CYG_TTY_IN_FLAGS_CR|CYG_TTY_IN_FLAGS_ECHO)
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  /* CYGONCE_TTYIO_H */
+/* EOF ttyio.h */