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LDTs are the siblings of the Global Descriptor Table (GDT), and each define up to 8192 memory segments accessible to programs - note that unlike the GDT, the zeroeth entry is a valid entry, and can be used like any other LDT entry. Also note that unlike the GDT, the LDT cannot be used to store certain system entries: TSSs or LDTs. Call Gates ...
The descriptors may be either interrupt gates, trap gates or, for 32-bit protected mode only, task gates. Interrupt and trap gates point to a memory location containing code to execute by specifying both a segment (present in either the GDT or LDT) and an offset within that segment. The only difference between trap and interrupt gates is that ...
A segment register called the task register (TR) holds a segment selector that points to a valid TSS segment descriptor which resides in the GDT (a TSS descriptor may not reside in the LDT). Therefore, to use a TSS the following must be done by the operating system kernel: Create a TSS descriptor entry in the GDT
Geometric dimensioning and tolerancing, GD&T; Global Descriptor Table, an x86 data structure; Global distance test, to compare proteins; Ground Data Terminal; GDT or Gerätedatentransfer, a medical data format; see xDT
In computing, protected mode, also called protected virtual address mode, [1] is an operational mode of x86-compatible central processing units (CPUs). It allows system software to use features such as segmentation, virtual memory, paging and safe multi-tasking designed to increase an operating system's control over application software.
GDT (Gerätedatentransfer): A format to transfer data among medical devices and software systems LDT ( Labordatentransfer ): A format to transfer orders of laboratory tests and their results. External links
A 'data link module' (DLM) is the interface between the data link and the TFMs. A DLM has a blue label. For transmission over longer distances, fibre-optic cable and pulse-code modulation may be used. Another type of module, the 'long distance terminal' (LDT) is available for this purpose. An LDT has a gold coloured label.
LDT may stand for: Laterodorsal tegmental nucleus, a nucleus in the brain stem; Laboratory developed test, in vitro diagnostics; Labordatentransfer, a German xDT format to transfer laboratory tests; Large deviations theory, field of probability theory; Learning Design and Technology, an academic program; Lexical decision task in psychology ...