new file mode 100644
--- /dev/null
+++ b/packages/devs/common/current/include/iorb.h
@@ -0,0 +1,106 @@
+#ifndef CYGONCE_DEVS_COMMON_IORB_H
+#define CYGONCE_DEVS_COMMON_IORB_H
+
+//==========================================================================
+//
+//	iorb.h
+//
+//	Header file for IORB data structure
+//
+//==========================================================================
+//####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 Cygnus Solutions.  All Rights Reserved.
+// -------------------------------------------
+//
+//####COPYRIGHTEND####
+//==========================================================================
+//#####DESCRIPTIONBEGIN####
+//
+// Author(s): 	proven
+// Contributors:	proven
+// Date:	1998-04-20
+// Purpose:	Define IORB data structure
+// Description:	This file contains the C/C++ struct declaration of Cyg_IORB.
+//		Cyg_IORB is the basic class for all device operations for
+//		both the C and C++ API.
+// Usage:	#include <cyg/devs/common/iorb.h>
+//
+//####DESCRIPTIONEND####
+//
+//==========================================================================
+
+#include <cyg/infra/cyg_type.h>
+#include <cyg/infra/cyg_ass.h>		// assertion macros
+#include <cyg/infra/cyg_trac.h>		// tracing macros
+
+// -------------------------------------------------------------------------
+// Cyg_IORB
+
+/*
+ * This struct will be accessed by some ISR routines. Any field that is
+ * modified by an ISR routine must be declared volatile. Currently this
+ * includes next, ret_length, and resultstatus.
+ * 
+ * Note: For next this means the pointer next is volatile not the contents.
+ */
+typedef struct Cyg_IORB_t
+{
+#ifdef __cplusplus
+    friend class Cyg_Device;
+
+    private:
+    Cyg_Device        * pdevice;
+
+    // Accessor functions
+    void set_pdevice(Cyg_Device * device) { pdevice = device; }
+
+    public:
+
+    // Accessor functions
+    Cyg_Device *
+    get_pdevice(void) { return(pdevice); }
+
+#else
+    // Make sure the C and C++ versions are the same size;
+    CYG_ADDRESS         pdevice;
+#endif
+
+    struct Cyg_IORB_t * volatile next;		
+
+    void              * buffer;         // ptr to buffer
+    cyg_uint32		buffer_length;  // length of buffer
+    volatile cyg_uint32 xferred_length; // length of buffer xferd
+
+    cyg_uint8       	opcode;         // operation code + options
+    volatile cyg_uint8 	status;         // state, result + error code
+
+    CYG_ADDRWORD        callback_data;	// data field for callback routine
+    void            	(*callback)( struct Cyg_IORB_t * piorb);
+} Cyg_IORB;
+
+// opflags codes
+#define CYG_IORB_NOBLOCK  0x01		// opcode for special serial reads
+
+// Resultstatus codes
+#define CYG_IORB_OK	  0x00
+#define CYG_IORB_CANCELED 0x02
+
+#endif  // CYGONCE_DEVS_COMMON_IORB_H
+// End of iorb.h
+