src/dosfns.c

   1 /* MS-DOS specific Lisp utilities.  Coded by Manabu Higashida, 1991.
   2    Major changes May-July 1993 Morten Welinder (only 10% original code left)
   3    Copyright (C) 1991, 1993, 1996, 1997 Free Software Foundation, Inc.
   4
   5 This file is part of GNU Emacs.
   6
   7 GNU Emacs is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GNU Emacs is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU Emacs; see the file COPYING.  If not, write to
  19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, USA.  */
  21
  22
  23 #include <config.h>
  24
  25 #ifdef MSDOS
  26 /* The entire file is within this conditional */
  27
  28 #include <stdio.h>
  29 #include <string.h>
  30 #include <dos.h>
  31 #include "lisp.h"
  32 #include "buffer.h"
  33 #include "termchar.h"
  34 #include "termhooks.h"
  35 #include "frame.h"
  36 #include "blockinput.h"
  37 #include "window.h"
  38 #include "dosfns.h"
  39 #include "msdos.h"
  40 #include "dispextern.h"
  41 #include "charset.h"
  42 #include "coding.h"
  43 #include <dpmi.h>
  44 #include <go32.h>
  45 #include <dirent.h>
  46 #include <sys/vfs.h>
  47
  48 #ifndef __DJGPP_MINOR__
  49 # define __tb _go32_info_block.linear_address_of_transfer_buffer;
  50 #endif
  51
  52 DEFUN ("int86", Fint86, Sint86, 2, 2, 0,
  53   "Call specific MSDOS interrupt number INTERRUPT with REGISTERS.\n\
  54 Return the updated REGISTER vector.\n\
  55 \n\
  56 INTERRUPT should be an integer in the range 0 to 255.\n\
  57 REGISTERS should be a vector produced by `make-register' and\n\
  58 `set-register-value'.")
  59   (interrupt, registers)
  60   Lisp_Object interrupt, registers;
  61 {
  62   register int i;
  63   int no;
  64   union REGS inregs, outregs;
  65   Lisp_Object val;
  66
  67   CHECK_NUMBER (interrupt, 0);
  68   no = (unsigned long) XINT (interrupt);
  69   CHECK_VECTOR (registers, 1);
  70   if (no < 0 || no > 0xff || XVECTOR (registers)-> size != 8)
  71     return Qnil;
  72   for (i = 0; i < 8; i++)
  73     CHECK_NUMBER (XVECTOR (registers)->contents[i], 1);
  74
  75   inregs.x.ax    = (unsigned long) XFASTINT (XVECTOR (registers)->contents[0]);
  76   inregs.x.bx    = (unsigned long) XFASTINT (XVECTOR (registers)->contents[1]);
  77   inregs.x.cx    = (unsigned long) XFASTINT (XVECTOR (registers)->contents[2]);
  78   inregs.x.dx    = (unsigned long) XFASTINT (XVECTOR (registers)->contents[3]);
  79   inregs.x.si    = (unsigned long) XFASTINT (XVECTOR (registers)->contents[4]);
  80   inregs.x.di    = (unsigned long) XFASTINT (XVECTOR (registers)->contents[5]);
  81   inregs.x.cflag = (unsigned long) XFASTINT (XVECTOR (registers)->contents[6]);
  82   inregs.x.flags = (unsigned long) XFASTINT (XVECTOR (registers)->contents[7]);
  83
  84   int86 (no, &inregs, &outregs);
  85
  86   XVECTOR (registers)->contents[0] = make_number (outregs.x.ax);
  87   XVECTOR (registers)->contents[1] = make_number (outregs.x.bx);
  88   XVECTOR (registers)->contents[2] = make_number (outregs.x.cx);
  89   XVECTOR (registers)->contents[3] = make_number (outregs.x.dx);
  90   XVECTOR (registers)->contents[4] = make_number (outregs.x.si);
  91   XVECTOR (registers)->contents[5] = make_number (outregs.x.di);
  92   XVECTOR (registers)->contents[6] = make_number (outregs.x.cflag);
  93   XVECTOR (registers)->contents[7] = make_number (outregs.x.flags);
  94
  95   return registers;
  96 }
  97
  98 DEFUN ("msdos-memget", Fdos_memget, Sdos_memget, 2, 2, 0,
  99   "Read DOS memory at offset ADDRESS into VECTOR.\n\
 100 Return the updated VECTOR.")
 101   (address, vector)
 102   Lisp_Object address, vector;
 103 {
 104   register int i;
 105   int offs, len;
 106   char *buf;
 107   Lisp_Object val;
 108
 109   CHECK_NUMBER (address, 0);
 110   offs = (unsigned long) XINT (address);
 111   CHECK_VECTOR (vector, 1);
 112   len = XVECTOR (vector)-> size;
 113   if (len < 1 || len > 2048 || address < 0 || address > 0xfffff - len)
 114     return Qnil;
 115   buf = alloca (len);
 116   dosmemget (offs, len, buf);
 117
 118   for (i = 0; i < len; i++)
 119     XVECTOR (vector)->contents[i] = make_number (buf[i]);
 120
 121   return vector;
 122 }
 123
 124 DEFUN ("msdos-memput", Fdos_memput, Sdos_memput, 2, 2, 0,
 125   "Write DOS memory at offset ADDRESS from VECTOR.")
 126   (address, vector)
 127   Lisp_Object address, vector;
 128 {
 129   register int i;
 130   int offs, len;
 131   char *buf;
 132   Lisp_Object val;
 133
 134   CHECK_NUMBER (address, 0);
 135   offs = (unsigned long) XINT (address);
 136   CHECK_VECTOR (vector, 1);
 137   len = XVECTOR (vector)-> size;
 138   if (len < 1 || len > 2048 || address < 0 || address > 0xfffff - len)
 139     return Qnil;
 140   buf = alloca (len);
 141
 142   for (i = 0; i < len; i++)
 143     {
 144       CHECK_NUMBER (XVECTOR (vector)->contents[i], 1);
 145       buf[i] = (unsigned char) XFASTINT (XVECTOR (vector)->contents[i]) & 0xFF;
 146     }
 147
 148   dosmemput (buf, len, offs);
 149   return Qt;
 150 }
 151
 152 DEFUN ("msdos-set-keyboard", Fmsdos_set_keyboard, Smsdos_set_keyboard, 1, 2, 0,
 153   "Set keyboard layout according to COUNTRY-CODE.\n\
 154 If the optional argument ALLKEYS is non-nil, the keyboard is mapped for\n\
 155 all keys; otherwise it is only used when the ALT key is pressed.\n\
 156 The current keyboard layout is available in dos-keyboard-code.")
 157   (country_code, allkeys)
 158   Lisp_Object country_code;
 159 {
 160   CHECK_NUMBER (country_code, 0);
 161   if (!dos_set_keyboard (XINT (country_code), !NILP (allkeys)))
 162     return Qnil;
 163   return Qt;
 164 }
 165
 166 #ifndef HAVE_X_WINDOWS
 167 /* Later we might want to control the mouse interface with this function,
 168    e.g., with respect to non-80 column screen modes.  */
 169
 170 DEFUN ("msdos-mouse-p", Fmsdos_mouse_p, Smsdos_mouse_p, 0, 0, 0, "\
 171 Report whether a mouse is present.")
 172      ()
 173 {
 174   if (have_mouse)
 175     return Qt;
 176   else
 177     return Qnil;
 178 }
 179 #endif
 180
 181
 182 DEFUN ("msdos-mouse-init", Fmsdos_mouse_init, Smsdos_mouse_init, 0, 0, "",
 183   "Initialize and enable mouse if available.")
 184   ()
 185 {
 186   if (have_mouse)
 187     {
 188       have_mouse = 1;
 189       mouse_init ();
 190       return Qt;
 191     }
 192   return Qnil;
 193 }
 194
 195 DEFUN ("msdos-mouse-enable", Fmsdos_mouse_enable, Smsdos_mouse_enable, 0, 0, "",
 196   "Enable mouse if available.")
 197   ()
 198 {
 199   if (have_mouse)
 200     {
 201       have_mouse = 1;
 202       mouse_on ();
 203     }
 204   return have_mouse ? Qt : Qnil;
 205 }
 206
 207 DEFUN ("msdos-mouse-disable", Fmsdos_mouse_disable, Smsdos_mouse_disable, 0, 0, "",
 208   "Disable mouse if available.")
 209   ()
 210 {
 211   mouse_off ();
 212   if (have_mouse) have_mouse = -1;
 213   return Qnil;
 214 }
 215
 216 DEFUN ("insert-startup-screen", Finsert_startup_screen, Sinsert_startup_screen, 0, 0, "", "\
 217 Insert copy of screen contents prior to starting emacs.\n\
 218 Return nil if startup screen is not available.")
 219   ()
 220 {
 221   char *s;
 222   int rows, cols;
 223   int i, j;
 224
 225   if (!dos_get_saved_screen (&s, &rows, &cols))
 226     return Qnil;
 227
 228   for (i = 0; i < rows; i++)
 229     {
 230       for (j = 0; j < cols; j++)
 231         {
 232           insert_char (*s);
 233           s += 2;
 234         }
 235       insert_char ('\n');
 236     }
 237
 238   return Qt;
 239 }
 240 \f
 241 /* country info */
 242 int dos_country_code;
 243 int dos_codepage;
 244 int dos_timezone_offset;
 245 int dos_decimal_point;
 246 int dos_keyboard_layout;
 247 unsigned char dos_country_info[DOS_COUNTRY_INFO];
 248 static unsigned char usa_country_info[DOS_COUNTRY_INFO] = {
 249   0, 0,                         /* date format */
 250   '$', 0, 0, 0, 0,              /* currency string */
 251   ',', 0,                       /* thousands separator */
 252   '.', 0,                       /* decimal separator */
 253   '/', 0,                       /* date separator */
 254   ':', 0,                       /* time separator */
 255   0,                            /* currency format */
 256   2,                            /* digits after decimal in currency */
 257   0,                            /* time format */
 258   0, 0, 0, 0,                   /* address of case map routine, GPF if used */
 259   ' ', 0,                       /* data-list separator (?) */
 260   0, 0, 0, 0, 0, 0, 0, 0, 0, 0  /* reserved */
 261 };
 262
 263 int dos_hyper_key;
 264 int dos_super_key;
 265 int dos_keypad_mode;
 266
 267 Lisp_Object Vdos_version;
 268 Lisp_Object Vdos_display_scancodes;
 269
 270 #ifndef HAVE_X_WINDOWS
 271 static unsigned dos_windows_version;
 272 Lisp_Object Vdos_windows_version;
 273
 274 char parent_vm_title[50];       /* Ralf Brown says 30 is enough */
 275 int w95_set_virtual_machine_title (const char *);
 276
 277 void
 278 restore_parent_vm_title (void)
 279 {
 280   if (NILP (Vdos_windows_version))
 281     return;
 282   if ((dos_windows_version & 0xff) >= 4 && parent_vm_title[0])
 283     w95_set_virtual_machine_title (parent_vm_title);
 284   delay (50);
 285 }
 286 #endif /* !HAVE_X_WINDOWS */
 287
 288 void
 289 init_dosfns ()
 290 {
 291   union REGS regs;
 292   _go32_dpmi_registers dpmiregs;
 293   unsigned long xbuf = _go32_info_block.linear_address_of_transfer_buffer;
 294
 295 #ifndef SYSTEM_MALLOC
 296   get_lim_data (); /* why the hell isn't this called elsewhere? */
 297 #endif
 298
 299   regs.x.ax = 0x3000;
 300   intdos (&regs, &regs);
 301   Vdos_version = Fcons (make_number (regs.h.al), make_number (regs.h.ah));
 302
 303   /* Obtain the country code via DPMI, use DJGPP transfer buffer.  */
 304   dpmiregs.x.ax = 0x3800;
 305   dpmiregs.x.ds = xbuf >> 4;
 306   dpmiregs.x.dx = 0;
 307   dpmiregs.x.ss = dpmiregs.x.sp = dpmiregs.x.flags = 0;
 308   _go32_dpmi_simulate_int (0x21, &dpmiregs);
 309   if (dpmiregs.x.flags & 1)
 310     {
 311       dos_country_code = 1;     /* assume USA if 213800 failed */
 312       memcpy (dos_country_info, usa_country_info, DOS_COUNTRY_INFO);
 313     }
 314   else
 315     {
 316       dos_country_code = dpmiregs.x.bx;
 317       dosmemget (xbuf, DOS_COUNTRY_INFO, dos_country_info);
 318     }
 319
 320   dos_set_keyboard (dos_country_code, 0);
 321
 322   regs.x.ax = 0x6601;
 323   intdos (&regs, &regs);
 324   if (regs.x.cflag)
 325     /* Estimate code page from country code */
 326     switch (dos_country_code)
 327       {
 328       case 45: /* Denmark */
 329       case 47: /* Norway */
 330         dos_codepage = 865;
 331         break;
 332       default:
 333         /* US */
 334         dos_codepage = 437;
 335       }
 336   else
 337     dos_codepage = regs.x.bx & 0xffff;
 338
 339 #ifndef HAVE_X_WINDOWS
 340   parent_vm_title[0] = '\0';
 341
 342   /* If we are running from DOS box on MS-Windows, get Windows version.  */
 343   dpmiregs.x.ax = 0x1600;       /* enhanced mode installation check */
 344   dpmiregs.x.ss = dpmiregs.x.sp = dpmiregs.x.flags = 0;
 345   _go32_dpmi_simulate_int (0x2f, &dpmiregs);
 346   /* We only support Windows-specific features when we run on Windows 9X
 347      or on Windows 3.X/enhanced mode.
 348
 349      Int 2Fh/AX=1600h returns:
 350
 351      AL = 00:  no Windows at all;
 352      AL = 01:  Windows/386 2.x;
 353      AL = 80h: Windows 3.x in mode other than enhanced;
 354      AL = FFh: Windows/386 2.x
 355
 356      We also check AH > 0 (Windows 3.1 or later), in case AL tricks us.  */
 357   if (dpmiregs.h.al > 2 && dpmiregs.h.al != 0x80 && dpmiregs.h.al != 0xff
 358       && (dpmiregs.h.al > 3 || dpmiregs.h.ah > 0))
 359     {
 360       dos_windows_version = dpmiregs.x.ax;
 361       Vdos_windows_version =
 362         Fcons (make_number (dpmiregs.h.al), make_number (dpmiregs.h.ah));
 363
 364       /* Save the current title of this virtual machine, so we can restore
 365          it before exiting.  Otherwise, Windows 95 will continue to use
 366          the title we set even after we are history, stupido...  */
 367       if (dpmiregs.h.al >= 4)
 368         {
 369           dpmiregs.x.ax = 0x168e;
 370           dpmiregs.x.dx = 3;    /* get VM title */
 371           dpmiregs.x.cx = sizeof(parent_vm_title) - 1;
 372           dpmiregs.x.es = __tb >> 4;
 373           dpmiregs.x.di = __tb & 15;
 374           dpmiregs.x.sp = dpmiregs.x.ss = dpmiregs.x.flags = 0;
 375           _go32_dpmi_simulate_int (0x2f, &dpmiregs);
 376           if (dpmiregs.x.ax == 1)
 377             dosmemget (__tb, sizeof(parent_vm_title), parent_vm_title);
 378         }
 379     }
 380   else
 381     {
 382       dos_windows_version = 0;
 383       Vdos_windows_version = Qnil;
 384     }
 385 #endif /* !HAVE_X_WINDOWS */
 386
 387 #if __DJGPP__ >= 2
 388
 389   /* Without this, we never see hidden files.
 390      Don't OR it with the previous value, so the value recorded at dump
 391      time, possibly with `preserve-case' flags set, won't get through.  */
 392   __opendir_flags = __OPENDIR_FIND_HIDDEN;
 393
 394 #if __DJGPP_MINOR__ == 0
 395   /* Under LFN, preserve the case of files as recorded in the directory
 396      (in DJGPP 2.01 and later this is automagically done by the library).  */
 397   if (!NILP (Fmsdos_long_file_names ()))
 398     __opendir_flags |= __OPENDIR_PRESERVE_CASE;
 399 #endif /* __DJGPP_MINOR__ == 0 */
 400 #endif /* __DJGPP__ >= 2 */
 401 }
 402 \f
 403 #ifndef HAVE_X_WINDOWS
 404
 405 /* Emulation of some X window features from xfns.c and xfaces.c.  */
 406
 407 /* Standard VGA colors, in the order of their standard numbering
 408    in the default VGA palette.  */
 409 static char *vga_colors[16] = {
 410   "black", "blue", "green", "cyan", "red", "magenta", "brown",
 411   "lightgray", "darkgray", "lightblue", "lightgreen", "lightcyan",
 412   "lightred", "lightmagenta", "yellow", "white"
 413 };
 414
 415 /* Given a color name, return its index, or -1 if not found.  Note
 416    that this only performs case-insensitive comparison against the
 417    standard names.  For anything more sophisticated, like matching
 418    "gray" with "grey" or translating X color names into their MSDOS
 419    equivalents, call the Lisp function Qtty_color_desc (defined
 420    on lisp/term/tty-colors.el).  */
 421 int
 422 msdos_stdcolor_idx (const char *name)
 423 {
 424   int i;
 425
 426   for (i = 0; i < sizeof (vga_colors) / sizeof (vga_colors[0]); i++)
 427     if (strcasecmp (name, vga_colors[i]) == 0)
 428       return i;
 429
 430   return
 431     strcmp (name, unspecified_fg) == 0 ? FACE_TTY_DEFAULT_FG_COLOR
 432     : strcmp (name, unspecified_bg) == 0 ? FACE_TTY_DEFAULT_BG_COLOR
 433     : FACE_TTY_DEFAULT_COLOR;
 434 }
 435
 436 /* Given a color index, return its standard name.  */
 437 Lisp_Object
 438 msdos_stdcolor_name (int idx)
 439 {
 440   extern Lisp_Object Qunspecified;
 441
 442   if (idx == FACE_TTY_DEFAULT_FG_COLOR)
 443     return build_string (unspecified_fg);
 444   else if (idx == FACE_TTY_DEFAULT_BG_COLOR)
 445     return build_string (unspecified_bg);
 446   else if (idx >= 0 && idx < sizeof (vga_colors) / sizeof (vga_colors[0]))
 447     return build_string (vga_colors[idx]);
 448   else
 449     return Qunspecified;        /* meaning the default */
 450 }
 451
 452 /* Support for features that are available when we run in a DOS box
 453    on MS-Windows.  */
 454 int
 455 ms_windows_version (void)
 456 {
 457   return dos_windows_version;
 458 }
 459
 460 /* Set the title of the current virtual machine, to appear on
 461    the caption bar of that machine's window.  */
 462
 463 int
 464 w95_set_virtual_machine_title (const char *title_string)
 465 {
 466   /* Only Windows 9X (version 4 and higher) support this function.  */
 467   if (!NILP (Vdos_windows_version)
 468       && (dos_windows_version & 0xff) >= 4)
 469     {
 470       _go32_dpmi_registers regs;
 471       dosmemput (title_string, strlen (title_string) + 1, __tb);
 472       regs.x.ax = 0x168e;
 473       regs.x.dx = 1;
 474       regs.x.es = __tb >> 4;
 475       regs.x.di = __tb & 15;
 476       regs.x.sp = regs.x.ss = regs.x.flags = 0;
 477       _go32_dpmi_simulate_int (0x2f, &regs);
 478       return regs.x.ax == 1;
 479     }
 480   return 0;
 481 }
 482
 483 /* Change the title of frame F to NAME.
 484    If NAME is nil, use the frame name as the title.
 485
 486    If Emacs is not run from a DOS box on Windows 9X, this only
 487    sets the name in the frame struct, but has no other effects.  */
 488
 489 void
 490 x_set_title (f, name)
 491      struct frame *f;
 492      Lisp_Object name;
 493 {
 494   /* Don't change the title if it's already NAME.  */
 495   if (EQ (name, f->title))
 496     return;
 497
 498   update_mode_lines = 1;
 499
 500   f->title = name;
 501
 502   if (NILP (name))
 503     name = f->name;
 504
 505   if (FRAME_MSDOS_P (f))
 506     {
 507       BLOCK_INPUT;
 508       w95_set_virtual_machine_title (XSTRING (name)->data);
 509       UNBLOCK_INPUT;
 510     }
 511 }
 512 #endif /* !HAVE_X_WINDOWS */
 513 \f
 514 DEFUN ("file-system-info", Ffile_system_info, Sfile_system_info, 1, 1, 0,
 515   "Return storage information about the file system FILENAME is on.\n\
 516 Value is a list of floats (TOTAL FREE AVAIL), where TOTAL is the total\n\
 517 storage of the file system, FREE is the free storage, and AVAIL is the\n\
 518 storage available to a non-superuser.  All 3 numbers are in bytes.\n\
 519 If the underlying system call fails, value is nil.")
 520   (filename)
 521   Lisp_Object filename;
 522 {
 523   struct statfs stfs;
 524   Lisp_Object encoded, value;
 525
 526   CHECK_STRING (filename, 0);
 527   filename = Fexpand_file_name (filename, Qnil);
 528   encoded = ENCODE_FILE (filename);
 529
 530   if (statfs (XSTRING (encoded)->data, &stfs))
 531     value = Qnil;
 532   else
 533     value = list3 (make_float ((double) stfs.f_bsize * stfs.f_blocks),
 534                    make_float ((double) stfs.f_bsize * stfs.f_bfree),
 535                    make_float ((double) stfs.f_bsize * stfs.f_bavail));
 536
 537   return value;
 538 }
 539 \f
 540 void
 541 dos_cleanup (void)
 542 {
 543 #ifndef HAVE_X_WINDOWS
 544   restore_parent_vm_title ();
 545 #endif
 546   /* Make sure the termscript file is committed, in case we are
 547      crashing and some vital info was written there.  */
 548   if (termscript)
 549     {
 550       fflush (termscript);
 551       fsync (fileno (termscript));
 552     }
 553 }
 554
 555 /*
 556  *      Define everything
 557  */
 558 syms_of_dosfns ()
 559 {
 560   defsubr (&Sint86);
 561   defsubr (&Sdos_memget);
 562   defsubr (&Sdos_memput);
 563   defsubr (&Smsdos_mouse_init);
 564   defsubr (&Smsdos_mouse_enable);
 565   defsubr (&Smsdos_set_keyboard);
 566   defsubr (&Sinsert_startup_screen);
 567   defsubr (&Smsdos_mouse_disable);
 568   defsubr (&Sfile_system_info);
 569 #ifndef HAVE_X_WINDOWS
 570   defsubr (&Smsdos_mouse_p);
 571 #endif
 572
 573   DEFVAR_INT ("dos-country-code", &dos_country_code,
 574     "The country code returned by Dos when Emacs was started.\n\
 575 Usually this is the international telephone prefix.");
 576
 577   DEFVAR_INT ("dos-codepage", &dos_codepage,
 578     "The codepage active when Emacs was started.\n\
 579 The following are known:\n\
 580         437     United States\n\
 581         850     Multilingual (Latin I)\n\
 582         852     Slavic (Latin II)\n\
 583         857     Turkish\n\
 584         860     Portugal\n\
 585         861     Iceland\n\
 586         863     Canada (French)\n\
 587         865     Norway/Denmark");
 588
 589   DEFVAR_INT ("dos-timezone-offset", &dos_timezone_offset,
 590     "The current timezone offset to UTC in minutes.
 591 Implicitly modified when the TZ variable is changed.");
 592
 593   DEFVAR_LISP ("dos-version", &Vdos_version,
 594     "The (MAJOR . MINOR) Dos version (subject to modification with setver).");
 595
 596 #ifndef HAVE_X_WINDOWS
 597   DEFVAR_LISP ("dos-windows-version", &Vdos_windows_version,
 598     "The (MAJOR . MINOR) Windows version for DOS session on MS-Windows.");
 599 #endif
 600
 601   DEFVAR_LISP ("dos-display-scancodes", &Vdos_display_scancodes,
 602     "*When non-nil, the keyboard scan-codes are displayed at the bottom right\n\
 603 corner of the display (typically at the end of the mode line).\n\
 604 The output format is: scan code:char code*modifiers.");
 605   Vdos_display_scancodes = Qnil;
 606
 607   DEFVAR_INT ("dos-hyper-key", &dos_hyper_key,
 608     "*If set to 1, use right ALT key as hyper key.\n\
 609 If set to 2, use right CTRL key as hyper key.");
 610   dos_hyper_key = 0;
 611
 612   DEFVAR_INT ("dos-super-key", &dos_super_key,
 613     "*If set to 1, use right ALT key as super key.\n\
 614 If set to 2, use right CTRL key as super key.");
 615   dos_super_key = 0;
 616
 617   DEFVAR_INT ("dos-keypad-mode", &dos_keypad_mode,
 618     "*Controls what key code is returned by a key in the numeric keypad.\n\
 619 The `numlock ON' action is only taken if no modifier keys are pressed.\n\
 620 The value is an integer constructed by adding the following bits together:\n\
 621  \n\
 622   0x00  Digit key returns digit    (if numlock ON)\n\
 623   0x01  Digit key returns kp-digit (if numlock ON)\n\
 624   0x02  Digit key returns M-digit  (if numlock ON)\n\
 625   0x03  Digit key returns edit key (if numlock ON)\n\
 626  \n\
 627   0x00  Grey key returns char      (if numlock ON)\n\
 628   0x04  Grey key returns kp-key    (if numlock ON)\n\
 629  \n\
 630   0x00  Digit key returns digit    (if numlock OFF)\n\
 631   0x10  Digit key returns kp-digit (if numlock OFF)\n\
 632   0x20  Digit key returns M-digit  (if numlock OFF)\n\
 633   0x30  Digit key returns edit key (if numlock OFF)\n\
 634  \n\
 635   0x00  Grey key returns char      (if numlock OFF)\n\
 636   0x40  Grey key returns kp-key    (if numlock OFF)\n\
 637  \n\
 638   0x200 ALT-0..ALT-9 in top-row produces shifted codes.");
 639   dos_keypad_mode = 0x75;
 640
 641   DEFVAR_INT ("dos-keyboard-layout", &dos_keyboard_layout,
 642     "Contains the country code for the current keyboard layout.\n\
 643 Use msdos-set-keyboard to select another keyboard layout.");
 644   dos_keyboard_layout = 1;      /* US */
 645
 646   DEFVAR_INT ("dos-decimal-point", &dos_decimal_point,
 647     "If non-zero, it contains the character to be returned when the\n\
 648 decimal point key in the numeric keypad is pressed when Num Lock is on.\n\
 649 If zero, the decimal point key returns the country code specific value.");
 650   dos_decimal_point = 0;
 651 }
 652 #endif /* MSDOS */