{ this is the file DIRCON.PAS which contains the 
    constant definitions of rt-11 directory structure }

     dirstart = 6;             { block 6 of device is start of dir }

     seglength = 507;          { remaining words of two block segment
                                 after 5 header words are removed }
     basiclength = 7;          { minimum entry length in words }

     tentative  =  8#400;      { status words ..... }
     empty      =  8#1000;
     permanent  =  8#2000;
     protected  =  8#100000;   { protected bit }
     endsegment =  8#4000;

     rnamelen = 3;

     blocklength = 256;        { words in rt logical block }

     fnamelen = 16;            { bytes }

     maxint = 8#177777;        { unsigned 16 bit }

     namelength = 6;           { bytes }

     extlength = 3;            { bytes in file extension }