www.国家的.com 4 修订 3.1
表格 的 内容
(持续)
Geode™ GXm 处理器
3.10 INTERRUPTSANDEXCEPTIONS ...........................................74
3.10.1 中断 ........................................................74
3.10.2 Exceptions .......................................................74
3.10.3 InterruptVectors ...................................................75
3.10.4 InterruptandExceptionPriorities ......................................76
3.10.5 ExceptionsinRealMode ............................................77
3.10.6 ErrorCodes ......................................................77
3.11 SYSTEMMANAGEMENTMODE ............................................78
3.11.1 SMMEnhancements ...............................................79
3.11.2 SMMOperation ...................................................79
3.11.3 TheSMI#Pin .....................................................80
3.11.4 SMMConfigurationRegisters ........................................80
3.11.5 SMMMemorySpaceHeader.........................................80
3.11.6 SMMInstructions ..................................................82
3.11.7 SMMMemorySpace ...............................................83
3.11.8 SMIGeneration ...................................................83
3.11.9 SMIServiceRoutineExecution .......................................83
3.12 SHUTDOWNANDHALT ...................................................86
3.13 保护 ...........................................................86
3.13.1 PrivilegeLevels ...................................................86
3.13.2 i/oprivilegelevels ................................................86
3.13.3 PrivilegeLevelTransfers ............................................87
3.13.4 InitializationandTransitiontoProtectedMode............................87
3.14 VIRTUAL8086MODE .....................................................88
3.14.1 MemoryAddressing ................................................88
3.14.2 保护 ........................................................88
3.14.3 中断 处理 . . . . . . ............................................88
3.14.4 EnteringandLeavingVirtual8086Mode................................88
3.15 FLOATINGPOINTUNITOPERATIONS .......................................89
3.15.1 fpu(floatingpointunit)registerset..................................89
3.15.2 FPUTagWordRegister .............................................89
3.15.3 FPUStatusRegister ...............................................89
3.15.4 FPUModeControlRegister ..........................................89
4.0 整体的 功能 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
4.1 整体的 功能 程序编制 接口 . . . . . . . . ...............92
4.1.1 Graphics 控制 寄存器 . . . . . . . . . . . . . . . ............................92
4.1.2 ControlRegisters ..................................................94
4.1.3 Graphics 记忆 . . . . . . ............................................94
4.1.4 L1CacheController ................................................95
4.1.5 DisplayDriverInstructions ...........................................98
4.1.6 cpu_读/cpu_writeinstructions .................................99
4.2 internalbusinterfaceunit..........................................100
4.2.1 FPUErrorSupport ................................................100
4.2.2 A20MSupport ...................................................100
4.2.3 SMIGeneration ..................................................100
4.2.4 640KBto1MBRegion ............................................100
4.2.5 InternalBusInterfaceUnitRegisters ..................................101
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