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diff --git a/system/alpha/h/eb164mem.h b/system/alpha/h/eb164mem.h
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+#ifndef __EB164MEM_H_LOADED
+#define __EB164MEM_H_LOADED
+/*****************************************************************************
+
+       Copyright © 1993, 1994 Digital Equipment Corporation,
+                       Maynard, Massachusetts.
+
+                        All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted, provided
+that the copyright notice and this permission notice appear in all copies
+of software and supporting documentation, and that the name of Digital not
+be used in advertising or publicity pertaining to distribution of the software
+without specific, written prior permission. Digital grants this permission
+provided that you prominently mark, as not part of the original, any
+modifications made to this software or documentation.
+
+Digital Equipment Corporation disclaims all warranties and/or guarantees
+with regard to this software, including all implied warranties of fitness for
+a particular purpose and merchantability, and makes no representations
+regarding the use of, or the results of the use of, the software and
+documentation in terms of correctness, accuracy, reliability, currentness or
+otherwise; and you rely on the software, documentation and results solely at
+your own risk.
+
+******************************************************************************/
+
+/*
+ *  $Id: eb164mem.h,v 1.1.1.1 1997/10/30 23:27:14 verghese Exp $;
+ */
+
+/*
+ * $Log: eb164mem.h,v $
+ * Revision 1.1.1.1  1997/10/30 23:27:14  verghese
+ * current 10/29/97
+ *
+ * Revision 1.2  1995/04/20  16:37:48  cruz
+ * Made some macro definition changes.
+ *
+ * Revision 1.1  1994/12/19  18:33:33  cruz
+ * Initial revision
+ *
+ *
+ */
+
+#ifdef EB164
+
+#include "system.h"
+#include "lib.h"
+#include "cia.h"
+
+#ifndef MAKEDEPEND
+#include "cserve.h"
+#endif
+
+
+/*
+ *  Macros used to access the memory controller
+ *  csr's.
+ */
+#define MEM_MCR(x)        (((ul)MC_MCR_BASE<<MC_MCR_BASE_SHIFT)|(ul)(x))
+#define _IN_MEM_MCR(p)    (ReadL(MEM_MCR(p)))
+#define _OUT_MEM_MCR(p,d) WriteL((MEM_MCR(p)),d);mb();
+
+#define MEM_GCR(x)        (((ul)MC_GCR_BASE<<MC_GCR_BASE_SHIFT)|(ul)(x))
+#define _IN_MEM_GCR(p)    (ReadL(MEM_GCR(p)))
+#define _OUT_MEM_GCR(p,d) WriteL((MEM_GCR(p)),d);mb();
+
+#endif /* EB164 */
+#endif /* __EB164MEM_H_LOADED */