From 214f990bdb945882e578e77d1c11b34b1b587ad4 Mon Sep 17 00:00:00 2001
From: Sandeep Mistry <s.mistry@arduino.cc>
Date: Mon, 4 Apr 2016 16:38:34 -0400
Subject: [PATCH] Define RAMSTART, RAMSIZE, RAMEND

---
 cores/arduino/Arduino.h |  1 +
 cores/arduino/avr/io.h  | 32 ++++++++++++++++++++++++++++++++
 2 files changed, 33 insertions(+)
 create mode 100644 cores/arduino/avr/io.h

diff --git a/cores/arduino/Arduino.h b/cores/arduino/Arduino.h
index 3bafdb5f..b6fd4e73 100644
--- a/cores/arduino/Arduino.h
+++ b/cores/arduino/Arduino.h
@@ -35,6 +35,7 @@ typedef uint16_t word;
 //
 #include "avr/pgmspace.h"
 #include "avr/interrupt.h"
+#include "avr/io.h"
 
 #include "binary.h"
 #include "itoa.h"
diff --git a/cores/arduino/avr/io.h b/cores/arduino/avr/io.h
new file mode 100644
index 00000000..33d20cdd
--- /dev/null
+++ b/cores/arduino/avr/io.h
@@ -0,0 +1,32 @@
+/*
+  io.h - Definitions for compatibility with AVR io macros
+
+  Copyright (c) 2016 Arduino LLC
+
+  Permission is hereby granted, free of charge, to any person obtaining a copy
+  of this software and associated documentation files (the "Software"), to deal
+  in the Software without restriction, including without limitation the rights
+  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+  copies of the Software, and to permit persons to whom the Software is
+  furnished to do so, subject to the following conditions:
+
+  The above copyright notice and this permission notice shall be included in
+  all copies or substantial portions of the Software.
+
+  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+  THE SOFTWARE
+*/
+
+#ifndef _IO_H_
+#define _IO_H_
+
+#define RAMSTART (HMCRAMC0_ADDR)
+#define RAMSIZE  (HMCRAMC0_SIZE)
+#define RAMEND   (RAMSTART + RAMSIZE - 1)
+
+#endif
-- 
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