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Can someone explain what GTD and ITDs are?
Posted: Fri Mar 12, 2004 12:00 am
by Freakyprogrammer
Can someone explain what GTD and ITDs are?, as far as I know they are a type of memory management.. and thats about it... thx in advance.
peace out...
-Freakyprogrammer
RE:Can someone explain what GTD and ITDs are?
Posted: Fri Mar 12, 2004 12:00 am
by pkd
GDT is the global descriptor table and is used to describe a section of memory in pmode.
eg. Descriptor 0x08 might point to a exec/read section of memory
& 0x10 might point to the same memory as a read/write section
IDT is the interupt descriptor table and its data is used to point to a given interrupt handler
Try looking for pmode tutorials almost all will deal with the GDT and IDT
one to search for is PMTUT.txt (unfortunately ive cleaned the directory)
Im not the best at explaining it but there is alot of info out there if you search for it
hope i helped
pkd
RE:Can someone explain what GTD and ITDs are?
Posted: Sat Mar 13, 2004 12:00 am
by Gandalf
hi friend,
you can look up at Intel docs - that will help you. Search for IA32 books 3(This is for system programmers like us) at developer.intel.com
The 3rd chapter and 4th chapter give detailed explantation about GDT & other segment level protection features.
The 5th chapter gives info on IDT & various interrupts
Hope it helps.
rgds
Gandalf
RE:Can someone explain what GTD and ITDs are?
Posted: Sat Mar 13, 2004 12:00 am
by Freakyprogrammer
Thanks man... I'll definatly go the intel dev site and read the docs,
peace out...
- Freakyprogrammer