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Geode™ GX1 处理器 序列
表格 的 内容
(持续)
3.5 补偿,段,andpagingmechanisms ...............................64
3.5.1 补偿 Mechanism . . . . . ..............................................64
3.5.2 SegmentMechanisms ................................................66
3.5.2.1 realmodesegmentmechanism........................................66
3.5.2.2 virtual8086modesegmentmechanism..................................66
3.5.2.3 segmentmechanisminprotectedmode..................................67
3.5.2.4 segmentselectors...................................................67
3.5.3 Descriptors .........................................................70
3.5.3.1 globalandlocaldescriptortableregisters...............................70
3.5.3.2 SegmentDescriptors .................................................70
3.5.3.3 task,门,中断,andapplicationandsystemdescriptors.................71
3.5.4 PagingMechanism...................................................77
3.6 INTERRUPTSANDEXCEPTIONS .............................................79
3.6.1 中断 ..........................................................79
3.6.2 Exceptions .........................................................79
3.6.3 InterruptVectors.....................................................80
3.6.3.1 interruptvectorassignments...........................................80
3.6.3.2 interruptdescriptortable..............................................80
3.6.4 InterruptandExceptionPriorities ........................................81
3.6.5 ExceptionsinRealMode ..............................................82
3.6.6 ErrorCodes ........................................................82
3.7 SYSTEMMANAGEMENTMODE ..............................................83
3.7.1 SMMOperation .....................................................84
3.7.2 SMI#Pin...........................................................85
3.7.3 SMMConfigurationRegisters ..........................................85
3.7.4 SMMMemorySpaceHeader...........................................85
3.7.5 SMMInstructions ....................................................87
3.7.6 SMMMemorySpace .................................................88
3.7.7 SMIGenerationforVirtualVGA .........................................88
3.7.8 SMMServiceRoutineExecution ........................................88
3.7.9 SMINesting ........................................................88
3.7.9.1 CPUStatesRelatedtoSMMandSuspendMode...........................90
3.8 HALTANDSHUTDOWN .....................................................91
3.9 保护 .............................................................91
3.9.1 PrivilegeLevels .....................................................91
3.9.2 i/oprivilegelevels ..................................................91
3.9.3 PrivilegeLevelTransfers ..............................................92
3.9.3.1 门 .............................................................92
3.9.4 InitializationandTransitiontoProtectedMode..............................93
3.10 VIRTUAL8086MODE .......................................................93
3.10.1 MemoryAddressing ..................................................93
3.10.2 保护 ..........................................................93
3.10.3 中断 处理 . . . . . . ..............................................93
3.10.4 EnteringandLeavingVirtual8086Mode ..................................93
3.11 FLOATINGPOINTUNITOPERATIONS .........................................94
3.11.1 FPURegisterSet ....................................................94
3.11.2 FPUTagWordRegister ...............................................94
3.11.3 FPUStatusRegister .................................................94
3.11.4 FPUModeControlRegister ............................................94
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