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Graphics Interchange Format  |  1998-10-01  |  29.0 KB  |  392x344  |  4-bit (16 colors)
   ocr: FIGURE 3 Format ofa call gate descriptor (a). A call gate contams a selector toan ece- cutable code descriptor which provides a base address) and an offset. The: offser iS added 10 the base address to accesss a system service. (b). 31 24 16 8 - OFFSETI 131.10 PDPL 01100 000 COUET SELECTOR OFFSET(15.0 P=Preset DPLE Descriptor Privilege: Level calls Sector,AHODNUh Ofset CRll Gate System Service Code: Base Address