diff --git a/include/ChangeLog b/include/ChangeLog
index d17cf54df..bf06aba14 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,11 @@
+Sun Oct 24 19:11:32 1999  Andrew Cagney  <cagney@b1.cygnus.com>
+
+	* sim-d10v.h (SIM_D10V_TS2_DMAP_REGNUM): Define.
+
+Sat Oct 23 19:00:13 1999  Andrew Cagney  <cagney@b1.cygnus.com>
+
+	* sim-d10v.h: New file.
+
 1999-09-04  Steve Chamberlain  <sac@pobox.com>
 
 	* dis-asm.h (print_insn_pj): Declare.
diff --git a/include/sim-d10v.h b/include/sim-d10v.h
new file mode 100644
index 000000000..84eab2a1a
--- /dev/null
+++ b/include/sim-d10v.h
@@ -0,0 +1,103 @@
+/* This file defines the interface between the d10v simulator and gdb.
+   Copyright (C) 1999 Free Software Foundation, Inc.
+
+This file is part of GDB.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#if !defined (SIM_D10V_H)
+#define SIM_D10V_H
+
+#ifdef __cplusplus
+extern "C" { // }
+#endif
+
+/* GDB interprets addresses as:
+
+   0x00xxxxxx: Physical unified memory segment     (Unified memory)
+   0x01xxxxxx: Physical instruction memory segment (On-chip insn memory)
+   0x02xxxxxx: Physical data memory segment        (On-chip data memory)
+   0x10xxxxxx: Logical data address segment        (DMAP translated memory)
+   0x11xxxxxx: Logical instruction address segment (IMAP translated memory)
+
+   The remote d10v board interprets addresses as:
+
+   0x00xxxxxx: Physical unified memory segment     (Unified memory)
+   0x01xxxxxx: Physical instruction memory segment (On-chip insn memory)
+   0x02xxxxxx: Physical data memory segment        (On-chip data memory)
+
+   The following translate a virtual DMAP/IMAP offset into a physical
+   memory segment assigning the translated address to PHYS.  Since a
+   memory access may cross a page boundrary the number of bytes for
+   which the translation is applicable (or 0 for an invalid virtual
+   offset) is returned. */
+
+enum
+  {
+    SIM_D10V_MEMORY_UNIFIED = 0x00000000,
+    SIM_D10V_MEMORY_INSN = 0x01000000,
+    SIM_D10V_MEMORY_DATA = 0x02000000,
+    SIM_D10V_MEMORY_DMAP = 0x10000000,
+    SIM_D10V_MEMORY_IMAP = 0x11000000
+  };
+
+extern unsigned long sim_d10v_translate_dmap_addr
+  (unsigned long offset,
+   int nr_bytes,
+   unsigned long *phys,
+   unsigned long (*dmap_register) (int reg_nr));
+
+extern unsigned long sim_d10v_translate_imap_addr
+  (unsigned long offset,
+   int nr_bytes,
+   unsigned long *phys,
+   unsigned long (*imap_register) (int reg_nr));
+
+extern unsigned long sim_d10v_translate_addr
+  (unsigned long vaddr,
+   int nr_bytes,
+   unsigned long *phys,
+   unsigned long (*dmap_register) (int reg_nr),
+   unsigned long (*imap_register) (int reg_nr));
+
+
+/* The simulator makes use of the following register information. */
+
+enum
+  {
+    SIM_D10V_R0_REGNUM = 0,
+    SIM_D10V_CR0_REGNUM = 16,
+    SIM_D10V_A0_REGNUM = 32,
+    SIM_D10V_SPI_REGNUM = 34,
+    SIM_D10V_SPU_REGNUM = 35,
+    SIM_D10V_IMAP0_REGNUM = 36,
+    SIM_D10V_DMAP0_REGNUM = 38,
+    SIM_D10V_TS2_DMAP_REGNUM = 40
+  };
+
+enum
+  {
+    SIM_D10V_NR_R_REGS = 16,
+    SIM_D10V_NR_A_REGS = 2,
+    SIM_D10V_NR_IMAP_REGS = 2,
+    SIM_D10V_NR_DMAP_REGS = 4,
+    SIM_D10V_NR_CR_REGS = 16
+  };
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif