Gaurav, here is the link for manuals :- http://www.x86.org/intel.doc/inteldocs.htm for 386 :- http://www.x86.org/intel.doc/386manuals.htm There are 3 docs for intel. Please go through the third document. You'll know about GDT and LDT and much more... Thanks. Sumit Sharma. On Fri, 17 Sep 2004 Dhiman,Gaurav wrote : >Can someone tell me what are the use of and format of GDT and LDT ..... >and are they somewhat related to IDT ....... I know IDT is used at the >time of interrupt generation, whats the use and format of GDT and LDT ? > > > >Please direct me to some good article on GDT and LDT ... also please let >me know form where can I get the online intel's processor specific >manuals/tutorials. > > > >Gaurav > > >