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1 /* machine description file for Whitechapel Computer Works MG1 (ns16000 based).
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2 Copyright (C) 1985 Free Software Foundation, Inc.
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3 MG-1 version by L.M.McLoughlin
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4
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5 This file is part of GNU Emacs.
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6
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7 GNU Emacs is free software; you can redistribute it and/or modify
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8 it under the terms of the GNU General Public License as published by
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9 the Free Software Foundation; either version 2, or (at your option)
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10 any later version.
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11
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12 GNU Emacs is distributed in the hope that it will be useful,
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13 but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with XEmacs; see the file COPYING. If not, write to
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19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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20 Boston, MA 02111-1307, USA. */
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21
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22 /* Synched up with: FSF 19.31. */
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23
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24 /* The following line tells the configuration script what sort of
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25 operating system this machine is likely to run.
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26 USUAL-OPSYS="note"
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27
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28 NOTE-START
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29 We are in the dark about what operating system runs on the Whitechapel
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30 systems. Consult share-lib/MACHINES for information on which
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31 operating systems Emacs has already been ported to; one of them might
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32 work. If you find an existing system name that works or write your
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33 own configuration files, please let the Free Software Foundation in on
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34 your work; we'd like to distribute this information.
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35 NOTE-END */
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36
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37 /* Now define a symbol for the cpu type, if your compiler
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38 does not define it automatically:
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39 vax, m68000, ns16000, pyramid, orion, tahoe and APOLLO
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40 are the ones defined so far. */
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41 /* Say this machine is a 16000 and an mg1, cpp says its a 32000 */
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42 #define ns16000
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43 #define mg1
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44
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45 /* Data type of load average, as read out of kmem. */
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46 /* mg1 its an unsigned long */
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47 #define LOAD_AVE_TYPE unsigned long
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48
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49 /* Convert that into an integer that is 100 for a load average of 1.0 */
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50 #define FSCALE 1000.0
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51 #define LOAD_AVE_CVT(x) (int) (((double) (x)) * 100.0 / FSCALE)
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52
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53 /* Define CANNOT_DUMP on machines where unexec does not work.
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54 Then the function dump-emacs will not be defined
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55 and temacs will do (load "loadup") automatically unless told otherwise. */
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56 /* ns16000's have an unexec, so should the mg-1 */
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57 #undef CANNOT_DUMP
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58
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59 /* Define VIRT_ADDR_VARIES if the virtual addresses of
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60 pure and impure space as loaded can vary, and even their
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61 relative order cannot be relied on.
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62
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63 Otherwise Emacs assumes that text space precedes data space,
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64 numerically. */
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65 /* hmmmm... not sure. copied sequent.h */
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66 #undef VIRT_ADDR_VARIES
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67
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68 /* Define C_ALLOCA if this machine does not support a true alloca
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69 and the one written in C should be used instead.
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70 Define HAVE_ALLOCA to say that the system provides a properly
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71 working alloca function and it should be used.
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72 Define neither one if an assembler-language alloca
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73 in the file alloca.s should be used. */
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74 /* hmmmm... again not sure. so copied sequent.h again! */
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75 #undef C_ALLOCA
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76 #undef HAVE_ALLOCA
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77
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78 /* Define NO_REMAP if memory segmentation makes it not work well
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79 to change the boundary between the text section and data section
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80 when Emacs is dumped. If you define this, the preloaded Lisp
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81 code will not be sharable; but that's better than failing completely. */
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82 /* mapping seems screwy */
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83 #define NO_REMAP
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84
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85 /* Avoids a compiler bug */
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86 /* borrowed from sequent.h */
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