Subversion Repositories SvarDOS

/*

 * SVAROG386 INSTALL

 * COPYRIGHT (C) 2016 MATEUSZ VISTE

 *

 * http://svarog386.sf.net

 */

#include <dos.h>

#include <direct.h>  /* mkdir() */

#include <stdio.h>   /* printf() and friends */

#include <stdlib.h>  /* system() */

#include <string.h>  /* memcpy() */

#include <unistd.h>

#include "kitten\kitten.h"

#include "cdrom.h"

#include "input.h"

#include "video.h"

/* color scheme (color, mono) */

static unsigned short COLOR_TITLEBAR[2] = {0x7000,0x7000};

static unsigned short COLOR_BODY[2] = {0x1700,0x0700};

static unsigned short COLOR_SELECT[2] = {0x7000,0x7000};

static unsigned short COLOR_SELECTCUR[2] = {0x1F00,0x0700};

/* mono flag */

static int mono = 0;

/* how much disk space does Svarog386 require (in MiB) */

#define SVAROG_DISK_REQ 8

/* reboot the computer */

static void reboot(void) {

  void ((far *bootroutine)()) = (void (far *)()) 0xFFFF0000L;

  int far *rstaddr = (int far *)0x00400072L; /* BIOS boot flag is at 0040:0072 */

  *rstaddr = 0x1234; /* 0x1234 = warm boot, 0 = cold boot */

  (*bootroutine)(); /* jump to the BIOS reboot routine at FFFF:0000 */

}

/* an NLS wrapper around video_putstring() */

static void putstringnls(int y, int x, unsigned short attr, int nlsmaj, int nlsmin, char *s) {

  s = kittengets(nlsmaj, nlsmin, s);

  video_putstring(y, x, attr, s);

}

#define LDEC(x,y) (((unsigned short)x << 8) | (unsigned short)y)

/* provides codepage and country files required by lang */

static int getnlscp(char *lang, int *egafile) {

  unsigned short l;

  l = lang[0];

  l <<= 8;

  l |= lang[1];

  switch (l) {

    case LDEC('E','N'):

      *egafile = 0;

      return(437);

    case LDEC('P','L'):

      *egafile = 10;

      return(991);

  }

  *egafile = 0;

  return(437);

}

static int menuselect(int ypos, int xpos, int height, char **list) {

  int i, offset = 0, res = 0, count, width = 0;

  /* count how many languages there is */

  for (count = 0; list[count] != NULL; count++) {

    int len = strlen(list[count]);

    if (len > width) width = len;

  }

  /* if xpos negative, means 'center out' */

  if (xpos < 0) xpos = 39 - (width >> 1);

  video_putchar(ypos, xpos+width+2, COLOR_SELECT[mono], 0xBF);         /*       \ */

  video_putchar(ypos, xpos-1, COLOR_SELECT[mono], 0xDA);               /*  /      */

  video_putchar(ypos+height-1, xpos-1, COLOR_SELECT[mono], 0xC0);      /*  \      */

  video_putchar(ypos+height-1, xpos+width+2, COLOR_SELECT[mono], 0xD9);/*      /  */

  video_putcharmulti(ypos, xpos, COLOR_SELECT[mono], 0xC4, width + 2, 1);

  video_putcharmulti(ypos+height-1, xpos, COLOR_SELECT[mono], 0xC4, width + 2, 1);

  video_putcharmulti(ypos+1, xpos-1, COLOR_SELECT[mono], 0xB3, height - 2, 80);

  video_putcharmulti(ypos+1, xpos+width+2, COLOR_SELECT[mono], 0xB3, height - 2, 80);

  for (;;) {

    int key;

    /* list of selectable items */

    for (i = 0; i < height - 2; i++) {

      if (i + offset == res) {

        video_putchar(ypos + 1 + i, xpos, COLOR_SELECTCUR[mono], 16);

        video_putchar(ypos + 1 + i, xpos+width+1, COLOR_SELECTCUR[mono], 17);

        video_movecursor(ypos + 1 + i, xpos);

        video_putstringfix(ypos + 1 + i, xpos+1, COLOR_SELECTCUR[mono], list[i + offset], width);

      } else if (i + offset < count) {

        video_putchar(ypos + 1 + i, xpos, COLOR_SELECT[mono], ' ');

        video_putchar(ypos + 1 + i, xpos+width+1, COLOR_SELECT[mono], ' ');

        video_putstringfix(ypos + 1 + i, xpos+1, COLOR_SELECT[mono], list[i + offset], width);

      } else {

        video_putcharmulti(ypos + 1 + i, xpos, COLOR_SELECT[mono], ' ', width+2, 1);

      }

    }

    key = input_getkey();

    if (key == 0x0D) { /* ENTER */

      return(res);

    } else if (key == 0x148) { /* up */

      if (res > 0) {

        res--;

        if (res < offset) offset = res;

      }

    } else if (key == 0x150) { /* down */

      if (res+1 < count) {

        res++;

        if (res > offset + height - 3) offset = res - (height - 3);

      }

    } else if (key == 0x147) { /* home */

      res = 0;

      offset = 0;

    } else if (key == 0x14F) { /* end */

      res = count - 1;

      if (res > offset + height - 3) offset = res - (height - 3);

    } else if (key == 0x1B) {  /* ESC */

      return(-1);

    } else {

      char buf[8];

      snprintf(buf, sizeof(buf), "0x%02X ", key);

      video_putstring(1, 0, COLOR_BODY[mono], buf);

    }

  }

}

static void newscreen(void) {

  int x;

  char *title;

  title = kittengets(0, 0, "SVAROG386 INSTALLATION");

  for (x = 0; x < 80; x++) video_putchar(0, x, COLOR_TITLEBAR[mono], ' ');

  video_putstring(0, 40 - (strlen(title) >> 1), COLOR_TITLEBAR[mono], title);

  video_clear(COLOR_BODY[mono], 80);

  video_movecursor(25,0);

}

static int selectlang(char *lang) {

  int choice;

  int x;

  char *msg;

  char *code;

  char *langlist[] = {

    "English\0EN",

    "French\0FR",

    "German\0DE",

    "Italian\0IT",

    "Polish\0PL",

    "Russian\0RU",

    "Slovenian\0SL",

    "Spanish\0ES",

    "Turkish\0TR",

    NULL

  };

  newscreen();

  msg = kittengets(1, 0, "Welcome to Svarog386");

  x = 40 - (strlen(msg) >> 1);

  video_putstring(4, x, COLOR_BODY[mono], msg);

  video_putcharmulti(5, x, COLOR_BODY[mono], '=', strlen(msg), 1);

  putstringnls(8, -1, COLOR_BODY[mono], 1, 1, "Please select your language from the list below:");

  choice = menuselect(10, -1, 12, langlist);

  if (choice < 0) return(-1);

  /* write short language code into lang */

  for (code = langlist[choice]; *code != 0; code++);

  memcpy(lang, code + 1, 2);

  lang[2] = 0;

  return(0);

}

/* returns 0 if installation must proceed, non-zero otherwise */

static int welcomescreen(void) {

  char *choice[] = {"Install Svarog386 to disk", "Quit to DOS", NULL};

  choice[0] = kittengets(0, 1, choice[0]);

  choice[1] = kittengets(0, 2, choice[1]);

  newscreen();

  putstringnls(4, 1, COLOR_BODY[mono], 2, 0, "You are about to install Svarog386: a free, MSDOS-compatible operating system");

  putstringnls(5, 1, COLOR_BODY[mono], 2, 1, "based on the FreeDOS kernel. Svarog386 targets 386+ computers and comes with a");

  putstringnls(6, 1, COLOR_BODY[mono], 2, 2, "variety of third-party applications.");

  putstringnls(8, 1, COLOR_BODY[mono], 2, 3, "WARNING: If your PC has another operating system installed, this other system");

  putstringnls(9, 1, COLOR_BODY[mono], 2, 4, "         might be unable to boot once Svarog386 is installed.");

  return(menuselect(13, -1, 4, choice));

}

/* returns 1 if drive is removable, 0 if not, -1 on error */

static int isdriveremovable(int drv) {

  union REGS r;

  r.x.ax = 0x4408;

  r.h.bl = drv;

  int86(0x21, &r, &r);

  /* CF set on error, AX set to 0 if removable, 1 if fixed */

  if (r.x.cflag != 0) return(-1);

  if (r.x.ax == 0) return(1);

  return(0);

}

/* returns total disk space of drive drv (in MiB, max 2048), or -1 if drive invalid */

static int disksize(int drv) {

  long res;

  union REGS r;

  r.h.ah = 0x36; /* DOS 2+ get free disk space */

  r.h.dl = drv;

  int86(0x21, &r, &r);

  if (r.x.ax == 0xffffu) return(-1); /* AX set to FFFFh if drive invalid */

  res = r.x.ax;  /* sectors per cluster */

  res *= r.x.dx; /* dx contains total clusters, bx contains free clusters */

  res *= r.x.cx; /* bytes per sector */

  res >>= 20;    /* convert bytes to MiB */

  return(res);

}

/* returns 0 if disk is empty, non-zero otherwise */

static int diskempty(int drv) {

  unsigned int rc;

  int res;

  char buff[8];

  struct find_t fileinfo;

  snprintf(buff, sizeof(buff), "%c:\\*.*", 'A' + drv - 1);

  rc = _dos_findfirst(buff, _A_NORMAL | _A_SUBDIR | _A_HIDDEN | _A_SYSTEM, &fileinfo);

  if (rc == 0) {

    res = 1; /* call successfull means disk is not empty */

  } else {

    res = 0;

  }

  /* _dos_findclose(&fileinfo); */ /* apparently required only on OS/2 */

  return(res);

}

static int preparedrive(void) {

  int driveremovable;

  int selecteddrive = 3; /* hardcoded to 'C:' for now */

  int cselecteddrive;

  int ds;

  char buff[128];

  cselecteddrive = 'A' + selecteddrive - 1;

  for (;;) {

    newscreen();

    driveremovable = isdriveremovable(selecteddrive);

    if (driveremovable < 0) {

      char *list[] = { "Create a partition automatically", "Run the FDISK partitioning tool", "Quit to DOS", NULL};

      list[0] = kittengets(0, 3, list[0]);

      list[1] = kittengets(0, 4, list[1]);

      list[2] = kittengets(0, 2, list[2]);

      snprintf(buff, sizeof(buff), kittengets(3, 0, "ERROR: Drive %c: could not be found. Perhaps your hard disk needs to be"), cselecteddrive);

      video_putstring(4, 2, COLOR_BODY[mono], buff);

      putstringnls(5, 2, COLOR_BODY[mono], 3, 1, "       partitioned first. Please create at least one partition on your");

      putstringnls(6, 2, COLOR_BODY[mono], 3, 2, "       hard disk, so Svarog386 can be installed on it. Note, that");

      snprintf(buff, sizeof(buff), kittengets(3, 3, "       Svarog386 requires at least %d MiB of available disk space."), SVAROG_DISK_REQ);

      video_putstring(7, 2, COLOR_BODY[mono], buff);

      putstringnls(9, 2, COLOR_BODY[mono], 3, 4, "You can use the FDISK partitioning tool for creating the required partition");

      putstringnls(10, 2, COLOR_BODY[mono], 3, 5, "manually, or you can let the installer partitioning your disk");

      putstringnls(11, 2, COLOR_BODY[mono], 3, 6, "automatically. You can also abort the installation to use any other");

      putstringnls(12, 2, COLOR_BODY[mono], 3, 7, "partition manager of your choice.");

      switch (menuselect(14, -1, 5, list)) {

        case 0:

          system("FDISK /AUTO");

          break;

        case 1:

          video_clear(0x0700, 0);

          video_movecursor(0, 0);

          system("FDISK");

          break;

        case 2:

          return(-1);

      }

      newscreen();

      putstringnls(11, 10, COLOR_BODY[mono], 3, 8, "Your computer will reboot now.");

      putstringnls(12, 10, COLOR_BODY[mono], 0, 5, "Press any key...");

      input_getkey();

      reboot();

      return(-1);

    } else if (driveremovable > 0) {

      snprintf(buff, sizeof(buff), kittengets(3, 9, "ERROR: Drive %c: is a removable device. Installation aborted."), cselecteddrive);

      video_putstring(9, 2, COLOR_BODY[mono], buff);

      putstringnls(11, 2, COLOR_BODY[mono], 0, 5, "Press any key...");

      return(-1);

    }

    /* if not formatted, propose to format it right away (try to create a directory) */

    snprintf(buff, sizeof(buff), "%c:\\SVWRTEST.123", cselecteddrive);

    if (mkdir(buff) == 0) {

      rmdir(buff);

    } else {

      char *list[] = { "Proceed with formatting", "Quit to DOS", NULL};

      list[0] = kittengets(0, 6, list[0]);

      list[1] = kittengets(0, 2, list[1]);

      snprintf(buff, sizeof(buff), kittengets(3, 10, "ERROR: Drive %c: seems to be unformated."), cselecteddrive);

      video_putstring(7, 2, COLOR_BODY[mono], buff);

      putstringnls(8, 2, COLOR_BODY[mono], 3, 11, "       Do you wish to format it?");

      if (menuselect(12, -1, 4, list) != 0) return(-1);

      video_clear(0x0700, 0);

      video_movecursor(0, 0);

      snprintf(buff, sizeof(buff), "FORMAT %c: /Q /U /Z:seriously /V:SVAROG386", cselecteddrive);

      system(buff);

      continue;

    }

    /* check total disk space */

    ds = disksize(selecteddrive);

    if (ds < SVAROG_DISK_REQ) {

      snprintf(buff, sizeof(buff), kittengets(3, 12, "ERROR: Drive %c: is not big enough!"), cselecteddrive);

      video_putstring(9, 2, COLOR_BODY[mono], buff);

      snprintf(buff, sizeof(buff), kittengets(3, 13, "      Svarog386 requires a disk of at least %d MiB."), SVAROG_DISK_REQ);

      video_putstring(10, 2, COLOR_BODY[mono], buff);

      putstringnls(12, 2, COLOR_BODY[mono], 0, 5, "Press any key...");

      input_getkey();

      return(-1);

    }

    /* is the disk empty? */

    if (diskempty(selecteddrive) != 0) {

      char *list[] = { "Proceed with formatting", "Quit to DOS", NULL};

      list[0] = kittengets(0, 6, list[0]);

      list[1] = kittengets(0, 2, list[1]);

      snprintf(buff, sizeof(buff), kittengets(3, 14, "ERROR: Drive %c: is not empty. Svarog386 must be installed on an empty disk."), cselecteddrive);

      video_putstring(7, 2, COLOR_BODY[mono], buff);

      putstringnls(8, 2, COLOR_BODY[mono], 3, 15, "       You can format the disk now, to make it empty. Note however, that");

      putstringnls(9, 2, COLOR_BODY[mono], 3, 16, "       this will ERASE ALL CURRENT DATA on your disk.");

      if (menuselect(12, -1, 4, list) != 0) return(-1);

      video_clear(0x0700, 0);

      video_movecursor(0, 0);

      snprintf(buff, sizeof(buff), "FORMAT %c: /Q /U /Z:seriously /V:SVAROG386", cselecteddrive);

      system(buff);

      continue;

    } else {

      /* final confirmation */

      char *list[] = { "Install Svarog386", "Quit to DOS", NULL};

      list[0] = kittengets(0, 1, list[0]);

      list[1] = kittengets(0, 2, list[1]);

      snprintf(buff, sizeof(buff), kittengets(3, 17, "The installation of Svarog386 to %c: is about to begin."), cselecteddrive);

      video_putstring(7, -1, COLOR_BODY[mono], buff);

      if (menuselect(10, -1, 4, list) != 0) return(-1);

      snprintf(buff, sizeof(buff), "SYS A: %c:", cselecteddrive);

      system(buff);

      snprintf(buff, sizeof(buff), "%c:\\TEMP", cselecteddrive);

      mkdir(buff);

      return(cselecteddrive);

    }

  }

}

/* copy file src into dst, substituting all characters c1 by c2 */

static void fcopysub(char *dst, char *src, char c1, char c2) {

  FILE *fdd, *fds;

  int buff;

  fds = fopen(src, "rb");

  if (fds == NULL) return;

  fdd = fopen(dst, "wb");

  if (fdd == NULL) {

    fclose(fds);

    return;

  }

  /* */

  for (;;) {

    buff = fgetc(fds);

    if (buff == EOF) break;

    if (buff == c1) buff = c2;

    fprintf(fdd, "%c", buff);

  }

  /* close files and return */

  fclose(fdd);

  fclose(fds);

}

static void bootfilesgen(int targetdrv, char *lang, int cdromdrv) {

  char buff[128];

  int cp, egafile;

  FILE *fd;

  cp = getnlscp(lang, &egafile);

  /*** CONFIG.SYS ***/

  snprintf(buff, sizeof(buff), "%c:\\CONFIG.SYS", targetdrv);

  fd = fopen(buff, "wb");

  if (fd == NULL) return;

  fprintf(fd, "DOS=UMB,HIGH\r\n");

  fprintf(fd, "FILES=50\r\n");

  fprintf(fd, "DEVICE=%c:\\SYSTEM\\SVAROG.386\\BIN\\HIMEMX.EXE\r\n", targetdrv);

  fprintf(fd, "SHELLHIGH=%c:\\SYSTEM\\SVAROG.386\\BIN\\COMMAND.COM /E:512 /P\r\n", targetdrv);

  fprintf(fd, "REM COUNTRY=001,437,%c:\\SYSTEM\\CONF\\COUNTRY.SYS\r\n", targetdrv);

  fprintf(fd, "DEVICE=%c:\\SYSTEM\\DRIVERS\\UDVD2\\UDVD2.SYS /D:SVCD0001 /H\r\n", targetdrv);

  fclose(fd);

  /*** AUTOEXEC.BAT ***/

  snprintf(buff, sizeof(buff), "%c:\\AUTOEXEC.BAT", targetdrv);

  fd = fopen(buff, "wb");

  if (fd == NULL) return;

  fprintf(fd, "@ECHO OFF\r\n");

  fprintf(fd, "SET TEMP=%c:\\TEMP\r\n", targetdrv);

  fprintf(fd, "SET DOSDIR=%c:\\SYSTEM\\SVAROG.386\r\n", targetdrv);

  fprintf(fd, "SET NLSPATH=%%DOSDIR%%\\NLS\r\n");

  fprintf(fd, "SET LANG=%s\r\n", lang);

  fprintf(fd, "SET DIRCMD=/OGNE/P/4\r\n");

  fprintf(fd, "SET FDNPKG.CFG=%c:\\SYSTEM\\CFG\\FDNPKG.CFG\r\n", targetdrv);

  fprintf(fd, "SET WATTCP.CFG=%c:\\SYSTEM\\CFG\\WATTCP.CFG\r\n", targetdrv);

  fprintf(fd, "PATH %%DOSDIR%%\\BIN;%c:\\SYSTEM\\LINKS\r\n", targetdrv);

  fprintf(fd, "PROMPT $P$G\r\n");

  fprintf(fd, "ALIAS REBOOT=FDAPM COLDBOOT\r\n");

  fprintf(fd, "ALIAS HALT=FDAPM POWEROFF\r\n");

  fprintf(fd, "\r\n");

  if (egafile > 0) {

    fprintf(fd, "DISPLAY CON=(EGA,,1)\r\n");

    if (egafile == 1) {

      fprintf(fd, "MODE CON CP PREPARE=((%d) %c:\\SYSTEM\\SVAROG.386\\CPI\\EGA.CPX)\r\n", cp, targetdrv);

    } else {

      fprintf(fd, "MODE CON CP PREPARE=((%d) %c:\\SYSTEM\\SVAROG.386\\CPI\\EGA%d.CPX)\r\n", cp, targetdrv, egafile);

    }

    fprintf(fd, "MODE CON CP SELECT=%d\r\n", cp);

    fprintf(fd, "\r\n");

  }

  fprintf(fd, "SHSUCDX /d:SVCD0001\r\n");

  fprintf(fd, "\r\n");

  fprintf(fd, "REM Uncomment the line below for automatic mouse support\r\n");

  fprintf(fd, "REM CTMOUSE\r\n");

  fprintf(fd, "\r\n");

  fprintf(fd, "ECHO.\r\n");

  fprintf(fd, "ECHO Welcome to Svarog386! Type 'HELP' if you need help.\r\n");

  fclose(fd);

  /*** CREATE DIRECTORY FOR OTHER CONFIGURATION FILES ***/

  snprintf(buff, sizeof(buff), "%c:\\SYSTEM\\CFG", targetdrv);

  mkdir(buff);

  /*** FDNPKG.CFG ***/

  snprintf(buff, sizeof(buff), "%c:\\SYSTEM\\CFG\\FDNPKG.CFG", targetdrv);

  fcopysub(buff, "A:\\DAT\\FDNPKG.CFG", '$', cdromdrv);

  /*** COUNTRY.SYS ***/

  /*** PICOTCP ***/

  /*** WATTCP ***/

}

static void installpackages(int targetdrv, int cdromdrv) {

  char *pkglist[] = {

    "A:\\UDVD2", /* this one's not part of CORE, hence it's stored right on the floppy */

    "APPEND",

    "ASSIGN",

    "ATTRIB",

    "CHKDSK",

    "CHOICE",

    "COMMAND",

    "COMP",

    "CPIDOS",

    "CTMOUSE",

    "DEBUG",

    "DEFRAG",

    "DELTREE",

    "DEVLOAD",

    "DISKCOMP",

    "DISKCOPY",

    "DISPLAY",

    "DOSFSCK",

    "EDIT",

    "EDLIN",

    "EXE2BIN",

    "FC",

    "FDAPM",

    "FDISK",

    "FDNPKG",

    "FIND",

    "FORMAT",

    "HELP",

    "HIMEMX",

    "KERNEL",

    "KEYB",

    "LABEL",

    "LBACACHE",

    "MEM",

    "MIRROR",

    "MODE",

    "MORE",

    "MOVE",

    "NANSI",

    "NLSFUNC",

    "PRINT",

    "RDISK",

    "RECOVER",

    "REPLACE",

    "SHARE",

    "SHSUCDX",

    "SORT",

    "SWSUBST",

    "TREE",

    "UNDELETE",

    "XCOPY",

    NULL

  };

  int i, pkglistlen;

  char buff[64];

  newscreen();

  /* count how long the pkg list is */

  for (pkglistlen = 0; pkglist[pkglistlen] != NULL; pkglistlen++);

  /* set DOSDIR and friends */

  snprintf(buff, sizeof(buff), "%c:\\SYSTEM\\SVAROG.386", targetdrv);

  setenv("DOSDIR", buff, 1);

  snprintf(buff, sizeof(buff), "%c:\\TEMP", targetdrv);

  setenv("TEMP", buff, 1);

  /* install packages */

  for (i = 0; pkglist[i] != NULL; i++) {

    char buff[128];

    snprintf(buff, sizeof(buff), kittengets(4, 0, "Installing package %d/%d: %s"), i+1, pkglistlen, pkglist[i]);

    strcat(buff, "       ");

    video_putstring(10, 2, COLOR_BODY[mono], buff);

    if (pkglist[i][1] == ':') {

      snprintf(buff, sizeof(buff), "FDINST INSTALL %s.ZIP > NUL", pkglist[i]);

    } else {

      snprintf(buff, sizeof(buff), "FDINST INSTALL %c:\\CORE\\%s.ZIP > NUL", cdromdrv, pkglist[i]);

    }

    system(buff);

  }

}

static void finalreboot(void) {

  newscreen();

  putstringnls(9, 2, COLOR_BODY[mono], 5, 0, "Svarog386 installation is over. Your computer will reboot now.");

  putstringnls(10, 2, COLOR_BODY[mono], 5, 1, "Please remove the installation disk from your drive.");

  putstringnls(12, 2, COLOR_BODY[mono], 0, 5, "Press any key...");

  input_getkey();

  reboot();

}

static void loadcp(char *lang) {

  int cp, egafile;

  char buff[64];

  cp = getnlscp(lang, &egafile);

  if (cp == 437) return;

  video_movecursor(1, 0);

  if (egafile == 1) {

    snprintf(buff, sizeof(buff), "MODE CON CP PREP=((%d) A:\\EGA.CPX)", cp);

  } else {

    snprintf(buff, sizeof(buff), "MODE CON CP PREP=((%d) A:\\EGA%d.CPX)", cp, egafile);

  }

  system(buff);

  snprintf(buff, sizeof(buff), "MODE CON CP SEL=%d", cp);

  system(buff);

  /* below I re-init the video controller - apparently this is required if

   * I want the new glyph symbols to be actually applied */

  {

  union REGS r;

  r.h.ah = 0x0F; /* get current video mode */

  int86(0x10, &r, &r); /* r.h.al contains the current video mode now */

  r.h.ah = 0; /* set video mode (to whatever is set in AL) */

  int86(0x10, &r, &r);

  }

}

int main(void) {

  char lang[4];

  int targetdrv;

  int cdromdrv;

  /* find where the cdrom drive is */

  cdromdrv = cdrom_findfirst();

  if (cdromdrv < 0) {

    printf("ERROR: CD-ROM DRIVE NOT FOUND\r\n");

    return(1);

  }

  cdromdrv += 'A'; /* convert the cdrom 'id' (A=0) to an actual drive letter */

  /* init screen and detect mono status */

  mono = video_init();

  for (;;) { /* fake loop, it's here just to break out easily */

    if (selectlang(lang) < 0) break; /* welcome to svarog, select your language */

    setenv("LANG", lang, 1);

    loadcp(lang);

    kittenopen("INSTALL"); /* NLS support */

    /*selectkeyb();*/ /* what keyb layout should we use? */

    if (welcomescreen() != 0) break; /* what svarog386 is, ask whether to run live dos or install */

    targetdrv = preparedrive(); /* what drive should we install to? check avail. space */

    if (targetdrv < 0) break;

    /*askaboutsources();*/ /* IF sources are available, ask if installing with them */

    installpackages(targetdrv, cdromdrv);    /* install packages */

    bootfilesgen(targetdrv, lang, cdromdrv); /* generate boot files and other configurations */

    /*localcfg();*/ /* show local params (currency, etc), and propose to change them (based on localcfg) */

    /*netcfg();*/ /* basic networking config */

    finalreboot(); /* remove the CD and reboot */

    break;

  }

  kittenclose(); /* close NLS support */

  video_clear(0x0700, 0);

  video_movecursor(0, 0);

  return(0);

}