diff --git a/tools/src/librlink/RlinkPortCuff.cpp b/tools/src/librlink/RlinkPortCuff.cpp
index 7cb6f110..38d8a018 100644
--- a/tools/src/librlink/RlinkPortCuff.cpp
+++ b/tools/src/librlink/RlinkPortCuff.cpp
@@ -1,4 +1,4 @@
-// $Id: RlinkPortCuff.cpp 858 2017-03-05 17:41:37Z mueller $
+// $Id: RlinkPortCuff.cpp 875 2017-04-15 21:58:50Z mueller $
 //
 // Copyright 2012-2017 by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
 //
@@ -13,6 +13,7 @@
 // 
 // Revision History: 
 // Date         Rev Version  Comment
+// 2017-04-15   875   1.1.5  Open(): set default scheme
 // 2017-03-04   858   1.1.4  use clock_gettime instead of gettimeofday
 // 2015-04-12   666   1.1.3  add noinit attribute
 // 2014-08-22   584   1.1.2  use nullptr
@@ -26,7 +27,7 @@
 
 /*!
   \file
-  \version $Id: RlinkPortCuff.cpp 858 2017-03-05 17:41:37Z mueller $
+  \version $Id: RlinkPortCuff.cpp 875 2017-04-15 21:58:50Z mueller $
   \brief   Implemenation of RlinkPortCuff.
 */
 
@@ -98,7 +99,7 @@ bool RlinkPortCuff::Open(const std::string& url, RerrMsg& emsg)
 
   if (IsOpen()) Close();
 
-  if (!fUrl.Set(url, "|trace|noinit|", emsg)) return false;
+  if (!fUrl.Set(url, "|trace|noinit|", "cuff", emsg)) return false;
 
   // initialize USB context
   irc = libusb_init(&fpUsbContext);
diff --git a/tools/src/librlink/RlinkPortFifo.cpp b/tools/src/librlink/RlinkPortFifo.cpp
index a25c2968..08fba482 100644
--- a/tools/src/librlink/RlinkPortFifo.cpp
+++ b/tools/src/librlink/RlinkPortFifo.cpp
@@ -1,6 +1,6 @@
-// $Id: RlinkPortFifo.cpp 666 2015-04-12 21:17:54Z mueller $
+// $Id: RlinkPortFifo.cpp 875 2017-04-15 21:58:50Z mueller $
 //
-// Copyright 2011-2015 by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
+// Copyright 2011-2017 by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
 //
 // This program is free software; you may redistribute and/or modify it under
 // the terms of the GNU General Public License as published by the Free
@@ -13,6 +13,7 @@
 // 
 // Revision History: 
 // Date         Rev Version  Comment
+// 2017-04-15   875   1.2.1  Open(): set default scheme
 // 2015-04-12   666   1.2    add xon,noinit attributes
 // 2013-02-23   492   1.1    use RparseUrl
 // 2011-03-27   374   1.0    Initial version
@@ -21,7 +22,7 @@
 
 /*!
   \file
-  \version $Id: RlinkPortFifo.cpp 666 2015-04-12 21:17:54Z mueller $
+  \version $Id: RlinkPortFifo.cpp 875 2017-04-15 21:58:50Z mueller $
   \brief   Implemenation of RlinkPortFifo.
 */
 
@@ -65,7 +66,7 @@ bool RlinkPortFifo::Open(const std::string& url, RerrMsg& emsg)
 {
   if (IsOpen()) Close();
 
-  if (!fUrl.Set(url, "|keep|xon|noinit|", emsg)) return false;
+  if (!fUrl.Set(url, "|keep|xon|noinit|", "fifo", emsg)) return false;
 
   // Note: _rx fifo must be opened before the _tx fifo, otherwise the test
   //       bench might close with EOF on read prematurely (is a race condition).
diff --git a/tools/src/librlink/RlinkPortTerm.cpp b/tools/src/librlink/RlinkPortTerm.cpp
index ce302a57..fd02f421 100644
--- a/tools/src/librlink/RlinkPortTerm.cpp
+++ b/tools/src/librlink/RlinkPortTerm.cpp
@@ -1,4 +1,4 @@
-// $Id: RlinkPortTerm.cpp 868 2017-04-07 20:09:33Z mueller $
+// $Id: RlinkPortTerm.cpp 875 2017-04-15 21:58:50Z mueller $
 //
 // Copyright 2011-2017 by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
 //
@@ -13,6 +13,7 @@
 // 
 // Revision History: 
 // Date         Rev Version  Comment
+// 2017-04-15   875   1.3.2  Open(): set default scheme
 // 2017-04-07   868   1.3.1  Dump(): add detail arg
 // 2015-04-12   666   1.3    drop xon/xoff excaping; add noinit attribute
 // 2015-02-01   641   1.2    support custom baud rates (5M,6M,10M,12M)
@@ -28,7 +29,7 @@
 
 /*!
   \file
-  \version $Id: RlinkPortTerm.cpp 868 2017-04-07 20:09:33Z mueller $
+  \version $Id: RlinkPortTerm.cpp 875 2017-04-15 21:58:50Z mueller $
   \brief   Implemenation of RlinkPortTerm.
 */
 
@@ -83,7 +84,7 @@ bool RlinkPortTerm::Open(const std::string& url, RerrMsg& emsg)
 {
   Close();
 
-  if (!fUrl.Set(url, "|baud=|break|cts|xon|noinit|", emsg)) return false;
+  if (!fUrl.Set(url, "|baud=|break|cts|xon|noinit|", "term", emsg)) return false;
 
   // if path doesn't start with a '/' prepend a '/dev/tty'
   if (fUrl.Path().substr(0,1) != "/") {
diff --git a/tools/src/librw11/Rw11VirtDiskFile.cpp b/tools/src/librw11/Rw11VirtDiskFile.cpp
index 028fd32c..433c65df 100644
--- a/tools/src/librw11/Rw11VirtDiskFile.cpp
+++ b/tools/src/librw11/Rw11VirtDiskFile.cpp
@@ -1,4 +1,4 @@
-// $Id: Rw11VirtDiskFile.cpp 868 2017-04-07 20:09:33Z mueller $
+// $Id: Rw11VirtDiskFile.cpp 875 2017-04-15 21:58:50Z mueller $
 //
 // Copyright 2013-2017 by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
 //
@@ -13,6 +13,7 @@
 // 
 // Revision History: 
 // Date         Rev Version  Comment
+// 2017-04-15   875   1.1.2  Open(): add overload with scheme handling
 // 2017-04-07   868   1.1.1  Dump(): add detail arg
 // 2017-03-11   859   1.1    use fWProt
 // 2013-04-14   506   1.0    Initial version
@@ -21,7 +22,7 @@
 
 /*!
   \file
-  \version $Id: Rw11VirtDiskFile.cpp 868 2017-04-07 20:09:33Z mueller $
+  \version $Id: Rw11VirtDiskFile.cpp 875 2017-04-15 21:58:50Z mueller $
   \brief   Implemenation of Rw11VirtDiskFile.
 */
 
@@ -65,7 +66,16 @@ Rw11VirtDiskFile::~Rw11VirtDiskFile()
 
 bool Rw11VirtDiskFile::Open(const std::string& url, RerrMsg& emsg)
 {
-  if (!fUrl.Set(url, "|wpro|", emsg)) return false;
+  return Open(url, "file", emsg);
+}
+
+//------------------------------------------+-----------------------------------
+//! FIXME_docs
+
+bool Rw11VirtDiskFile::Open(const std::string& url, const std::string& scheme,
+                            RerrMsg& emsg)
+{
+  if (!fUrl.Set(url, "|wpro|", scheme, emsg)) return false;
   
   fWProt = fUrl.FindOpt("wpro");
   
diff --git a/tools/src/librw11/Rw11VirtDiskFile.hpp b/tools/src/librw11/Rw11VirtDiskFile.hpp
index 746ca872..50d4e0c6 100644
--- a/tools/src/librw11/Rw11VirtDiskFile.hpp
+++ b/tools/src/librw11/Rw11VirtDiskFile.hpp
@@ -1,4 +1,4 @@
-// $Id: Rw11VirtDiskFile.hpp 868 2017-04-07 20:09:33Z mueller $
+// $Id: Rw11VirtDiskFile.hpp 875 2017-04-15 21:58:50Z mueller $
 //
 // Copyright 2013-2017 by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
 //
@@ -13,6 +13,7 @@
 // 
 // Revision History: 
 // Date         Rev Version  Comment
+// 2017-04-15   875   1.0.2  Open(): add overload with scheme handling
 // 2017-04-07   868   1.0.1  Dump(): add detail arg
 // 2013-04-14   506   1.0    Initial version
 // 2013-02-13   488   0.1    First draft
@@ -21,7 +22,7 @@
 
 /*!
   \file
-  \version $Id: Rw11VirtDiskFile.hpp 868 2017-04-07 20:09:33Z mueller $
+  \version $Id: Rw11VirtDiskFile.hpp 875 2017-04-15 21:58:50Z mueller $
   \brief   Declaration of class Rw11VirtDiskFile.
 */
 
@@ -38,7 +39,9 @@ namespace Retro {
       explicit      Rw11VirtDiskFile(Rw11Unit* punit);
                    ~Rw11VirtDiskFile();
 
-      bool          Open(const std::string& url, RerrMsg& emsg);
+      virtual bool  Open(const std::string& url, RerrMsg& emsg);
+      bool          Open(const std::string& url, const std::string& scheme,
+                         RerrMsg& emsg);
 
       virtual bool  Read(size_t lba, size_t nblk, uint8_t* data, 
                          RerrMsg& emsg);
diff --git a/tools/src/librw11/Rw11VirtDiskOver.cpp b/tools/src/librw11/Rw11VirtDiskOver.cpp
index 0e869a65..3bbe2631 100644
--- a/tools/src/librw11/Rw11VirtDiskOver.cpp
+++ b/tools/src/librw11/Rw11VirtDiskOver.cpp
@@ -1,4 +1,4 @@
-// $Id: Rw11VirtDiskOver.cpp 868 2017-04-07 20:09:33Z mueller $
+// $Id: Rw11VirtDiskOver.cpp 875 2017-04-15 21:58:50Z mueller $
 //
 // Copyright 2017- by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
 //
@@ -13,13 +13,14 @@
 // 
 // Revision History: 
 // Date         Rev Version  Comment
+// 2017-04-15   875   1.0.2  Open(): use overload with scheme handling
 // 2017-04-07   868   1.0.1  Dump(): add detail arg
 // 2017-03-10   859   1.0    Initial version
 // ---------------------------------------------------------------------------
 
 /*!
   \file
-  \version $Id: Rw11VirtDiskOver.cpp 868 2017-04-07 20:09:33Z mueller $
+  \version $Id: Rw11VirtDiskOver.cpp 875 2017-04-15 21:58:50Z mueller $
   \brief   Implemenation of Rw11VirtDiskOver.
 */
 
@@ -72,8 +73,7 @@ bool Rw11VirtDiskOver::WProt() const
 bool Rw11VirtDiskOver::Open(const std::string& url, RerrMsg& emsg)
 {
   // FIXME_code: do we need to handle wpro ?
-  // FIXME_code: at this point assume that parent ignore proto
-  return Rw11VirtDiskFile::Open(url, emsg);
+  return Rw11VirtDiskFile::Open(url, "over", emsg);
 }
 
 //------------------------------------------+-----------------------------------
diff --git a/tools/src/librw11/Rw11VirtDiskOver.hpp b/tools/src/librw11/Rw11VirtDiskOver.hpp
index 594341c4..42320173 100644
--- a/tools/src/librw11/Rw11VirtDiskOver.hpp
+++ b/tools/src/librw11/Rw11VirtDiskOver.hpp
@@ -1,4 +1,4 @@
-// $Id: Rw11VirtDiskOver.hpp 868 2017-04-07 20:09:33Z mueller $
+// $Id: Rw11VirtDiskOver.hpp 875 2017-04-15 21:58:50Z mueller $
 //
 // Copyright 2017- by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
 //
@@ -20,7 +20,7 @@
 
 /*!
   \file
-  \version $Id: Rw11VirtDiskOver.hpp 868 2017-04-07 20:09:33Z mueller $
+  \version $Id: Rw11VirtDiskOver.hpp 875 2017-04-15 21:58:50Z mueller $
   \brief   Declaration of class Rw11VirtDiskOver.
 */
 
@@ -48,7 +48,7 @@ namespace Retro {
 
       virtual bool  WProt() const;
 
-      bool          Open(const std::string& url, RerrMsg& emsg);
+      virtual bool  Open(const std::string& url, RerrMsg& emsg);
 
       virtual bool  Read(size_t lba, size_t nblk, uint8_t* data, 
                          RerrMsg& emsg);
diff --git a/tools/src/librw11/Rw11VirtStream.hpp b/tools/src/librw11/Rw11VirtStream.hpp
index 208a8ef2..ca9b1ab9 100644
--- a/tools/src/librw11/Rw11VirtStream.hpp
+++ b/tools/src/librw11/Rw11VirtStream.hpp
@@ -1,4 +1,4 @@
-// $Id: Rw11VirtStream.hpp 868 2017-04-07 20:09:33Z mueller $
+// $Id: Rw11VirtStream.hpp 875 2017-04-15 21:58:50Z mueller $
 //
 // Copyright 2013-2017 by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
 //
@@ -20,7 +20,7 @@
 
 /*!
   \file
-  \version $Id: Rw11VirtStream.hpp 868 2017-04-07 20:09:33Z mueller $
+  \version $Id: Rw11VirtStream.hpp 875 2017-04-15 21:58:50Z mueller $
   \brief   Declaration of class Rw11VirtStream.
 */
 
@@ -39,7 +39,7 @@ namespace Retro {
       explicit      Rw11VirtStream(Rw11Unit* punit);
                    ~Rw11VirtStream();
 
-      bool          Open(const std::string& url, RerrMsg& emsg);
+      virtual bool  Open(const std::string& url, RerrMsg& emsg);
       int           Read(uint8_t* data, size_t count, RerrMsg& emsg);
       bool          Write(const uint8_t* data, size_t count, RerrMsg& emsg);
       bool          Flush(RerrMsg& emsg);
diff --git a/tools/src/librw11/Rw11VirtTapeTap.cpp b/tools/src/librw11/Rw11VirtTapeTap.cpp
index 41dd343d..d015148b 100644
--- a/tools/src/librw11/Rw11VirtTapeTap.cpp
+++ b/tools/src/librw11/Rw11VirtTapeTap.cpp
@@ -1,4 +1,4 @@
-// $Id: Rw11VirtTapeTap.cpp 868 2017-04-07 20:09:33Z mueller $
+// $Id: Rw11VirtTapeTap.cpp 875 2017-04-15 21:58:50Z mueller $
 //
 // Copyright 2015-2017 by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
 //
@@ -13,6 +13,7 @@
 // 
 // Revision History: 
 // Date         Rev Version  Comment
+// 2017-04-15   875   1.0.2  Open(): set default scheme
 // 2017-04-07   868   1.0.1  Dump(): add detail arg
 // 2015-06-04   686   1.0    Initial version
 // 2015-05-17   683   0.1    First draft
@@ -20,7 +21,7 @@
 
 /*!
   \file
-  \version $Id: Rw11VirtTapeTap.cpp 868 2017-04-07 20:09:33Z mueller $
+  \version $Id: Rw11VirtTapeTap.cpp 875 2017-04-15 21:58:50Z mueller $
   \brief   Implemenation of Rw11VirtTapeTap.
 */
 
@@ -79,7 +80,7 @@ Rw11VirtTapeTap::~Rw11VirtTapeTap()
 
 bool Rw11VirtTapeTap::Open(const std::string& url, RerrMsg& emsg)
 {
-  if (!fUrl.Set(url, "|wpro|e11|cap=|", emsg)) return false;
+  if (!fUrl.Set(url, "|wpro|e11|cap=|", "tap", emsg)) return false;
 
   fWProt  = fUrl.FindOpt("wpro");
   fPadOdd = fUrl.FindOpt("e11");
diff --git a/tools/src/librw11/Rw11VirtTapeTap.hpp b/tools/src/librw11/Rw11VirtTapeTap.hpp
index f64247d1..c33571e5 100644
--- a/tools/src/librw11/Rw11VirtTapeTap.hpp
+++ b/tools/src/librw11/Rw11VirtTapeTap.hpp
@@ -1,4 +1,4 @@
-// $Id: Rw11VirtTapeTap.hpp 868 2017-04-07 20:09:33Z mueller $
+// $Id: Rw11VirtTapeTap.hpp 875 2017-04-15 21:58:50Z mueller $
 //
 // Copyright 2015-2017 by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
 //
@@ -21,7 +21,7 @@
 
 /*!
   \file
-  \version $Id: Rw11VirtTapeTap.hpp 868 2017-04-07 20:09:33Z mueller $
+  \version $Id: Rw11VirtTapeTap.hpp 875 2017-04-15 21:58:50Z mueller $
   \brief   Declaration of class Rw11VirtTapeTap.
 */
 
@@ -38,7 +38,7 @@ namespace Retro {
       explicit      Rw11VirtTapeTap(Rw11Unit* punit);
                    ~Rw11VirtTapeTap();
 
-      bool          Open(const std::string& url, RerrMsg& emsg);
+      virtual bool  Open(const std::string& url, RerrMsg& emsg);
 
       virtual bool  ReadRecord(size_t nbyt, uint8_t* data, size_t& ndone, 
                                int& opcode, RerrMsg& emsg);
diff --git a/tools/src/librw11/Rw11VirtTermPty.cpp b/tools/src/librw11/Rw11VirtTermPty.cpp
index 745de947..da79d3f1 100644
--- a/tools/src/librw11/Rw11VirtTermPty.cpp
+++ b/tools/src/librw11/Rw11VirtTermPty.cpp
@@ -1,4 +1,4 @@
-// $Id: Rw11VirtTermPty.cpp 868 2017-04-07 20:09:33Z mueller $
+// $Id: Rw11VirtTermPty.cpp 875 2017-04-15 21:58:50Z mueller $
 //
 // Copyright 2013-2017 by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
 //
@@ -13,6 +13,7 @@
 // 
 // Revision History: 
 // Date         Rev Version  Comment
+// 2017-04-15   875   1.0.2  Open(): set default scheme
 // 2017-04-07   868   1.0.1  Dump(): add detail arg
 // 2013-03-06   495   1.0    Initial version
 // 2013-02-24   492   0.1    First draft
@@ -20,7 +21,7 @@
 
 /*!
   \file
-  \version $Id: Rw11VirtTermPty.cpp 868 2017-04-07 20:09:33Z mueller $
+  \version $Id: Rw11VirtTermPty.cpp 875 2017-04-15 21:58:50Z mueller $
   \brief   Implemenation of Rw11VirtTermPty.
 */
 #define _XOPEN_SOURCE 600
@@ -69,6 +70,8 @@ Rw11VirtTermPty::~Rw11VirtTermPty()
 
 bool Rw11VirtTermPty::Open(const std::string& url, RerrMsg& emsg)
 {
+  if (!fUrl.Set(url, "", "pty", emsg)) return false;
+
   int fd = posix_openpt(O_RDWR);
   if (fd < 0) {
     emsg.InitErrno("Rw11VirtTermPty::Open", "posix_openpt() failed: ", errno);
diff --git a/tools/src/librw11/Rw11VirtTermPty.hpp b/tools/src/librw11/Rw11VirtTermPty.hpp
index 59503417..d25c8ba0 100644
--- a/tools/src/librw11/Rw11VirtTermPty.hpp
+++ b/tools/src/librw11/Rw11VirtTermPty.hpp
@@ -1,4 +1,4 @@
-// $Id: Rw11VirtTermPty.hpp 868 2017-04-07 20:09:33Z mueller $
+// $Id: Rw11VirtTermPty.hpp 875 2017-04-15 21:58:50Z mueller $
 //
 // Copyright 2013-2017 by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
 //
@@ -21,7 +21,7 @@
 
 /*!
   \file
-  \version $Id: Rw11VirtTermPty.hpp 868 2017-04-07 20:09:33Z mueller $
+  \version $Id: Rw11VirtTermPty.hpp 875 2017-04-15 21:58:50Z mueller $
   \brief   Declaration of class Rw11VirtTermPty.
 */
 
@@ -40,7 +40,7 @@ namespace Retro {
       explicit      Rw11VirtTermPty(Rw11Unit* punit);
                    ~Rw11VirtTermPty();
 
-      bool          Open(const std::string& url, RerrMsg& emsg);
+      virtual bool  Open(const std::string& url, RerrMsg& emsg);
 
       virtual bool  Snd(const uint8_t* data, size_t count, RerrMsg& emsg);
 
diff --git a/tools/src/librw11/Rw11VirtTermTcp.cpp b/tools/src/librw11/Rw11VirtTermTcp.cpp
index 943566ee..9a8ecb3b 100644
--- a/tools/src/librw11/Rw11VirtTermTcp.cpp
+++ b/tools/src/librw11/Rw11VirtTermTcp.cpp
@@ -1,4 +1,4 @@
-// $Id: Rw11VirtTermTcp.cpp 868 2017-04-07 20:09:33Z mueller $
+// $Id: Rw11VirtTermTcp.cpp 875 2017-04-15 21:58:50Z mueller $
 //
 // Copyright 2013-2017 by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
 //
@@ -13,6 +13,7 @@
 // 
 // Revision History: 
 // Date         Rev Version  Comment
+// 2017-04-15   875   1.0.6  Open(): set default scheme
 // 2017-04-07   868   1.0.5  Dump(): add detail arg
 // 2014-08-22   584   1.0.4  use nullptr
 // 2013-05-17   512   1.0.3  use Rtools::String2Long
@@ -24,7 +25,7 @@
 
 /*!
   \file
-  \version $Id: Rw11VirtTermTcp.cpp 868 2017-04-07 20:09:33Z mueller $
+  \version $Id: Rw11VirtTermTcp.cpp 875 2017-04-15 21:58:50Z mueller $
   \brief   Implemenation of Rw11VirtTermTcp.
 */
 
@@ -118,7 +119,7 @@ Rw11VirtTermTcp::~Rw11VirtTermTcp()
 
 bool Rw11VirtTermTcp::Open(const std::string& url, RerrMsg& emsg)
 {
-  if (!fUrl.Set(url, "|port=|trace|", emsg)) return false;
+  if (!fUrl.Set(url, "|port=|trace|", "tcp", emsg)) return false;
   if (!(fUrl.FindOpt("port"))) {
     emsg.Init("Rw11VirtTermTcp::Open", "port= option not specified");
     return false;
diff --git a/tools/src/librw11/Rw11VirtTermTcp.hpp b/tools/src/librw11/Rw11VirtTermTcp.hpp
index e04f674d..77cbe6cf 100644
--- a/tools/src/librw11/Rw11VirtTermTcp.hpp
+++ b/tools/src/librw11/Rw11VirtTermTcp.hpp
@@ -1,4 +1,4 @@
-// $Id: Rw11VirtTermTcp.hpp 868 2017-04-07 20:09:33Z mueller $
+// $Id: Rw11VirtTermTcp.hpp 875 2017-04-15 21:58:50Z mueller $
 //
 // Copyright 2013-2017 by Walter F.J. Mueller <W.F.J.Mueller@gsi.de>
 //
@@ -22,7 +22,7 @@
 
 /*!
   \file
-  \version $Id: Rw11VirtTermTcp.hpp 868 2017-04-07 20:09:33Z mueller $
+  \version $Id: Rw11VirtTermTcp.hpp 875 2017-04-15 21:58:50Z mueller $
   \brief   Declaration of class Rw11VirtTermTcp.
 */
 
@@ -41,7 +41,7 @@ namespace Retro {
       explicit      Rw11VirtTermTcp(Rw11Unit* punit);
                    ~Rw11VirtTermTcp();
 
-      bool          Open(const std::string& url, RerrMsg& emsg);
+      virtual bool  Open(const std::string& url, RerrMsg& emsg);
 
       virtual bool  Snd(const uint8_t* data, size_t count, RerrMsg& emsg);