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428
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1 /* machine description file for vax.
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2 Copyright (C) 1985, 1986 Free Software Foundation, Inc.
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3
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4 This file is part of GNU Emacs.
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5
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6 GNU Emacs is free software; you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 2, or (at your option)
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9 any later version.
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10
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11 GNU Emacs is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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21 /* Synched up with: FSF 19.31. */
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22
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23 /* The following line tells the configuration script what sort of
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24 operating system this machine is likely to run.
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25 USUAL-OPSYS="note"
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26
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27 NOTE-START
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28 The vax (-machine=vax) runs zillions of different operating systems.
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29
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30 Vax running Berkeley Unix (-opsystem=bsd4-1, -opsystem=bsd4-2 or
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31 -opsystem=bsd4-3)
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32
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33 Works.
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34
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35 Vax running Ultrix (-opsystem=bsd4-2)
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36
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37 Works. See under Ultrix in share-lib/MACHINES for problems using X
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38 windows on Ultrix.
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39
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40 Vax running System V rel 2 (-opsystem=usg5-2)
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41
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42 18.27 Works.
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43
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44 Vax running System V rel 0 (-opsystem=usg5-0)
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45
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46 Works as of 18.36.
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47
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48 Vax running VMS (-opsystem=vms)
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49
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50 18.36 believed to work. Addition of features is necessary to make
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51 this Emacs version more usable.
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52
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53 NOTE-END */
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54
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55 /* #define vax -- appears to be done automatically */
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56
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57 /* crt0.c should use the vax-bsd style of entry, with no dummy args. */
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58
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59 #define CRT0_DUMMIES
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60
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61 /* crt0.c should define a symbol `start' and do .globl with a dot. */
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62
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63 #define DOT_GLOBAL_START
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64
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65 #ifdef BSD
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66 /* USG systems I know of running on Vaxes do not actually
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67 support the load average, so disable it for them. */
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68
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69 /* Data type of load average, as read out of kmem. */
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70
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71 #define LOAD_AVE_TYPE double
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72
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73 /* Convert that into an integer that is 100 for a load average of 1.0 */
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74
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75 #define LOAD_AVE_CVT(x) ((int) ((x) * 100.0))
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76
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77 #endif /* BSD */
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78
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79
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80 /* Vax sysV has alloca in the PW library. */
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81
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82 #ifdef USG
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83 #define LIB_STANDARD "-lPW -lc"
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84
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85 /* There is some bug in unexec in for usg 5.2 on a vax
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86 which nobody who runs such a system has yet tracked down. */
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87 #ifndef USG5_0
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88 #define NO_REMAP
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89 #endif /* USG 5_0 */
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90
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91 #define TEXT_START 0
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92 #endif /* USG */
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93
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94 #ifdef BSD4_2
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95 #define HAVE_FTIME
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96 #endif
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