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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 ...
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 ...
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
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
It was revised by MIL-STD-8A in 1953, which introduced the concept of modern GD&T "Rule 1". [5] [6] Further revisions have continued to add new concepts and address new technology like Computer Aided Design and Model-based definition. A list of revisions follows: [6] ASME Y14.5-2018, "Dimensioning and Tolerancing" Current Standard
Model-based definition (MBD), sometimes called digital product definition (DPD), is the practice of using 3D models (such as solid models, 3D PMI and associated metadata) within 3D CAD software to define (provide specifications for) individual components and product assemblies.
LCNLG – LDT CNL gamma ray log; LCR – local control room; LCV – level control valve; L/D – lay down (such as tubing or rods) LD – lay down (such as tubing or rods) LDAR – leak detection and repair; LDHI – low-dosage hydrate inhibitor; LDL – litho density log; LDS – leak detection system (pipeline monitoring) LDTEP – LDT EPT ...