/* machine description file for Whitechapel Computer Works MG1 (ns16000 based).
   Copyright (C) 1985 Free Software Foundation, Inc.
   MG-1 version by L.M.McLoughlin

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 2, 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, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */


/* The following line tells the configuration script what sort of 
   operating system this machine is likely to run.
   USUAL-OPSYS="note"

NOTE-START
We are in the dark about what operating system runs on the Whitechapel
systems.  Consult share-lib/MACHINES for information on which
operating systems Emacs has already been ported to; one of them might
work.  If you find an existing system name that works or write your
own configuration files, please let the Free Software Foundation in on
your work; we'd like to distribute this information.
NOTE-END  */

/* Define WORDS_BIG_ENDIAN iff lowest-numbered byte in a word
   is the most significant byte.  */

#undef WORDS_BIG_ENDIAN

/* Define NO_ARG_ARRAY if you cannot take the address of the first of a
 * group of arguments and treat it as an array of the arguments.  */
/* ns16000 call sequence used on mg1 means that &arg = the args as an array */
#undef NO_ARG_ARRAY

/* Define WORD_MACHINE if addresses and such have
 * to be corrected before they can be used as byte counts.  */
/* ns16000 addresses are byte addresses */
#undef WORD_MACHINE

/* Now define a symbol for the cpu type, if your compiler
   does not define it automatically:
   vax, m68000, ns16000, pyramid, orion, tahoe and APOLLO
   are the ones defined so far.  */
/* Say this machine is a 16000 and an mg1, cpp says its a 32000 */
#define ns16000
#define mg1

/* Use type int rather than a union, to represent Lisp_Object */
/* This is desirable for most machines.  */
/* Not sure on mg-1 but this shouldn't hurt! */
#define NO_UNION_TYPE

/* Define EXPLICIT_SIGN_EXTEND if XINT must explicitly sign-extend
   the 24-bit bit field into an int.  In other words, if bit fields
   are always unsigned.

   If you use NO_UNION_TYPE, this flag does not matter.  */

#define EXPLICIT_SIGN_EXTEND

/* Data type of load average, as read out of kmem.  */
/* mg1 its an unsigned long */
#define LOAD_AVE_TYPE unsigned long

/* Convert that into an integer that is 100 for a load average of 1.0  */
#define	FSCALE	1000.0
#define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)

/* Define CANNOT_DUMP on machines where unexec does not work.
   Then the function dump-emacs will not be defined
   and temacs will do (load "loadup") automatically unless told otherwise.  */
/* ns16000's have an unexec, so should the mg-1 */
#undef CANNOT_DUMP

/* Define VIRT_ADDR_VARIES if the virtual addresses of
   pure and impure space as loaded can vary, and even their
   relative order cannot be relied on.

   Otherwise Emacs assumes that text space precedes data space,
   numerically.  */
/* hmmmm... not sure.  copied sequent.h */
#undef VIRT_ADDR_VARIES

/* Define C_ALLOCA if this machine does not support a true alloca
   and the one written in C should be used instead.
   Define HAVE_ALLOCA to say that the system provides a properly
   working alloca function and it should be used.
   Define neither one if an assembler-language alloca
   in the file alloca.s should be used.  */
/* hmmmm... again not sure.  so copied sequent.h again! */
#undef C_ALLOCA
#undef HAVE_ALLOCA

/* Define NO_REMAP if memory segmentation makes it not work well
   to change the boundary between the text section and data section
   when Emacs is dumped.  If you define this, the preloaded Lisp
   code will not be sharable; but that's better than failing completely.  */
/* mapping seems screwy */
#define NO_REMAP

/* Avoids a compiler bug */
/* borrowed from sequent.h */