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+/* machine description file for vax.
+   Copyright (C) 1985, 1986 Free Software Foundation, Inc.
+
+This file is part of GNU Emacs.
+
+GNU Emacs 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 1, or (at your option)
+any later version.
+
+GNU Emacs 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 GNU Emacs; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+
+/* The following line tells the configuration script what sort of 
+   operating system this machine is likely to run.
+   USUAL-OPSYS="note"
+
+NOTE-START
+The vax (-machine=vax) runs zillions of different operating systems.
+
+Vax running Berkeley Unix (-opsystem=bsd4-1, -opsystem=bsd4-2 or
+			   -opsystem=bsd4-3)
+
+  Works.
+
+Vax running Ultrix (-opsystem=bsd4-2)
+
+  Works.  See under Ultrix in share-lib/MACHINES for problems using X
+  windows on Ultrix.
+
+Vax running System V rel 2 (-opsystem=usg5-2)
+
+  18.27 Works.
+
+Vax running System V rel 0 (-opsystem=usg5-0)
+
+  Works as of 18.36.
+
+Vax running VMS (-opsystem=vms)
+
+  18.36 believed to work.  Addition of features is necessary to make
+  this Emacs version more usable.
+
+NOTE-END  */
+
+/* The following three symbols give information on
+ the size of various data types.  */
+
+#define SHORTBITS 16		/* Number of bits in a short */
+
+#define INTBITS 32		/* Number of bits in an int */
+
+#define LONGBITS 32		/* Number of bits in a long */
+
+/* Vax is not big-endian: lowest numbered byte is least significant. */
+
+/* #undef BIG_ENDIAN */
+
+/* Define how to take a char and sign-extend into an int.
+   On machines where char is signed, this is a no-op.  */
+
+#define SIGN_EXTEND_CHAR(c) (c)
+
+/* #define vax    -- appears to be done automatically  */
+
+/* Use type int rather than a union, to represent Lisp_Object */
+
+#define NO_UNION_TYPE
+
+/* crt0.c should use the vax-bsd style of entry, with no dummy args.  */
+
+#define CRT0_DUMMIES
+
+/* crt0.c should define a symbol `start' and do .globl with a dot.  */
+
+#define DOT_GLOBAL_START
+
+#ifdef BSD
+/* USG systems I know of running on Vaxes do not actually
+   support the load average, so disable it for them.  */
+
+/* Data type of load average, as read out of kmem.  */
+
+#define LOAD_AVE_TYPE double
+
+/* Convert that into an integer that is 100 for a load average of 1.0  */
+
+#define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
+
+#endif /* BSD */
+
+#ifdef VMS
+
+/* Data type of load average, as read out of driver.  */
+
+#define LOAD_AVE_TYPE float
+
+/* Convert that into an integer that is 100 for a load average of 1.0  */
+
+#define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
+
+#endif /* VMS */
+
+/* Vax sysV has alloca in the PW library.  */
+
+#ifdef USG
+#define LIB_STANDARD -lPW -lc
+#define HAVE_ALLOCA
+
+/* There is some bug in unexec in for usg 5.2 on a vax
+   which nobody who runs such a system has yet tracked down. */
+#ifndef USG5_0
+#define NO_REMAP
+#endif /* USG 5_0 */
+
+#define TEXT_START 0
+#endif /* USG */
+
+#ifdef BSD
+#define HAVE_ALLOCA
+#endif /* BSD */
+
+#ifdef VMS
+#define C_ALLOCA
+#endif