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2012年3月26日星期一
Dr Beats Headphones80386and the control registersystem address register as shown in the following t
80386and the control registersystem address register as shown in the following table .They are used to control mode ,control subsection management mechanism and page management implementation mechanism .
Control system of register CRx BIT31 BIT30—BIT12 BIT11—BIT5 BIT4BIT3BIT2BIT1BIT0CR0PG 0000000000000000ETTS EM MP PE CR1 keep CR2page faultlinear address CR3 page tablephysical page 000000000000 BIT47—BIT16 BIT15—BIT0 global descriptionsymbol table base address register GDTR interrupt descriptor table register boundaries with IDTR base address boundaries in BIT15&mdash ;BIT0 local description symbol table register LDTR select sub task state segment TR BIT31&mdash ;BIT0 BIT31—BIT0 BIT11—BIT0 base address limit property base address limit properties of < ;> ;control register from the visible ,80386four32bits in a control register,named CR0 ,CR1 ,CR2 and CR3 .
But CR1 was retainedfor future development ,the processor uses ,in 80386 cannot be used inCR1 ,otherwise it will cause an invalid instruction operation exception .CR0 includes aprocessor mode control bits shown ,including enable and disable the paging mechanism control ,Nike Outlet Online,including control of floating point coprocessor operation control .
CR2 andCR3 by using paging management mechanism .The bits in CR0 30and CR35—in the 0 to11is retained,these bits can be optional value ,must be 0 .Control register CR0 the low 16 bitsequal to 80286MSWmachine status word .
1 protection controlposition control register CR0 bitwith 0 PE markers,Dr Beats Headphones,31PGmarkers ,the two bit control segmentation and paging management mechanism of operation ,so called them protection control bit .
PE control subsection management mechanism .PE = 0 ,processor running in real mode ;PE = 1 ,processing device operating in protected mode .PG control paging management mechanism .PG = 0 ,disables paging management mechanism ,this subsection management mechanism to generate a linear address directly as a physical address using ;PG = 1 ,enable paging management mechanism ,the linear address via the paging mechanism converts a physical address .
On the paging mechanism introduced in later articles for .The following table lists the through the use of PE and PG bit selection processor mode .Because only in protected mode is enabled paging machine system ,so even though the two bits respectively 0 and 1canhave four kinds of combination ,but only three kinds of combination .
PE = 0 and PG = 1 is not a validcombination ,therefore ,using PG 1 andPE 0valuesinto the CR0 registerwill cause a general protection exception .Note that ,PG will change the system to enable or disable the paging mechanism ,thus only when the executing program code and at least a portion of the data in the linear address space and physical address space having the same address, it can change the PG bit .
PG and PE and office manager working mode of PG PE processor mode 00mode 01protected mode,disable the paging mechanism 10 illegalcombination of 11 protected mode,enable paging mechanism 2 coprocessor controlposition control in register CR0 1—4werelabeled as MP ( a ,EM arithmetic ( simulation ) a ) ,TS ( task switching position ) and ET ( extended type bit ) ,which control the operation of the floating-point coprocessor .
When the processor reset, ET bit is initialized ,indicating system digital processor type .If the system has 80387 coprocessor,then ET position 1 ;if the system in the presence of 80287 coprocessoror nonexistent assist processor ,that what ET bit 0 clear.
EM control floating point instruction execution is simulated with the software ,or by hardware implementation .When EM = 0, control of hardware floating point instruction is transmitted to the processor ;EM = 1, a floating point instruction by software simulation .
TS bits are used to speed up the task switch ,through when it is necessary coprocessor switching method for this purpose .Each when the task switching ,processor TS 1.When TS = 1,Dr Dre Headphones, the floating point instruction will generate device is not available ( DNA ) anomaly .
MP control WAIT instruction in TS = 1, whether to produce DNA anomaly .MP = 1 and TS= 1 ,WAIT produced abnormal ;MP = 0, WAIT directive ignored TS conditions ,do not generate abnormal .
3.CR2 and CR3control registerCR2 and CR3 by thepaging mechanism using the .CR2 used to occurwhen error message page exception report .When the page is abnormal, the page exception processor caused by linear address stored in the CR2 .
Operating system page exception handler can check CR2 content,thus find out the linear address space in which page caused the abnormal .CR3 is used to save thepage table of the initial physical address .
The directory is page aligned ,so only 20effective,low 12 bits are reserved for future use .To the CR3 to mount a new value, low 12 to0;but from the CR3 value,low 12 bits arethen slightly .
When using MOV command to reset the CR3 value,Moncler Jackets,will cause the paging mechanism for high speed buffer contents invalid ,with this method, can enable paging mechanism before, that the PG position before 1, a refresh page cache mechanism .
CR3 storagedevice even in the CR0 register PG bitor bits of PE 0can also be arranged in,such as in real mode can also be set to CR3 ,the initialization of the paging mechanism .In task switching ,CR3 willbe changed ,but if the new tasks of CR3 valueand the original tasks of CR3 value is the same,then the processor does not refresh the page cache ,so that when the task sharing also have faster execution speed .
80386 adds several control registers ,CR0 CR1CR2CR3CR4.CR1 register.Register the bits in CR0 0PE markers,31PGmarkers ,the two bit control segmentation and paging management mechanism of operation ,Beats By Dre Headphones,so called them protection control bit .
PE control subsection management mechanism .PE = 0 ,processor running in real mode ;PE = 1 ,the processor to run in protected mode .PG control paging management mechanism .PG = 0 ,disables paging management mechanism ,this subsection management mechanism to generate a linear address directly as a physical address using ;PG = 1 ,enable paging management mechanism ,the linear address via the paging mechanism converts a physical address .
PG and PE and office manager working mode of PG PE processor mode 00mode 01protected mode,disable the paging mechanism 10 illegalcombination of 11 protected mode,enable paging mechanism CR3 save the page directory starting physical address .
CR2 pagefor occurrence of abnormal report an error message .When the page is abnormal, the page exception processor caused by linear address stored in the CR2 .Operating system page exception handler can check CR2 content,thus find out the linear address space in which caused the abnormal page .
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Control system of register CRx BIT31 BIT30—BIT12 BIT11—BIT5 BIT4BIT3BIT2BIT1BIT0CR0PG 0000000000000000ETTS EM MP PE CR1 keep CR2page faultlinear address CR3 page tablephysical page 000000000000 BIT47—BIT16 BIT15—BIT0 global descriptionsymbol table base address register GDTR interrupt descriptor table register boundaries with IDTR base address boundaries in BIT15&mdash ;BIT0 local description symbol table register LDTR select sub task state segment TR BIT31&mdash ;BIT0 BIT31—BIT0 BIT11—BIT0 base address limit property base address limit properties of < ;> ;control register from the visible ,80386four32bits in a control register,named CR0 ,CR1 ,CR2 and CR3 .
But CR1 was retainedfor future development ,the processor uses ,in 80386 cannot be used inCR1 ,otherwise it will cause an invalid instruction operation exception .CR0 includes aprocessor mode control bits shown ,including enable and disable the paging mechanism control ,Nike Outlet Online,including control of floating point coprocessor operation control .
CR2 andCR3 by using paging management mechanism .The bits in CR0 30and CR35—in the 0 to11is retained,these bits can be optional value ,must be 0 .Control register CR0 the low 16 bitsequal to 80286MSWmachine status word .
1 protection controlposition control register CR0 bitwith 0 PE markers,Dr Beats Headphones,31PGmarkers ,the two bit control segmentation and paging management mechanism of operation ,so called them protection control bit .
PE control subsection management mechanism .PE = 0 ,processor running in real mode ;PE = 1 ,processing device operating in protected mode .PG control paging management mechanism .PG = 0 ,disables paging management mechanism ,this subsection management mechanism to generate a linear address directly as a physical address using ;PG = 1 ,enable paging management mechanism ,the linear address via the paging mechanism converts a physical address .
On the paging mechanism introduced in later articles for .The following table lists the through the use of PE and PG bit selection processor mode .Because only in protected mode is enabled paging machine system ,so even though the two bits respectively 0 and 1canhave four kinds of combination ,but only three kinds of combination .
PE = 0 and PG = 1 is not a validcombination ,therefore ,using PG 1 andPE 0valuesinto the CR0 registerwill cause a general protection exception .Note that ,PG will change the system to enable or disable the paging mechanism ,thus only when the executing program code and at least a portion of the data in the linear address space and physical address space having the same address, it can change the PG bit .
PG and PE and office manager working mode of PG PE processor mode 00mode 01protected mode,disable the paging mechanism 10 illegalcombination of 11 protected mode,enable paging mechanism 2 coprocessor controlposition control in register CR0 1—4werelabeled as MP ( a ,EM arithmetic ( simulation ) a ) ,TS ( task switching position ) and ET ( extended type bit ) ,which control the operation of the floating-point coprocessor .
When the processor reset, ET bit is initialized ,indicating system digital processor type .If the system has 80387 coprocessor,then ET position 1 ;if the system in the presence of 80287 coprocessoror nonexistent assist processor ,that what ET bit 0 clear.
EM control floating point instruction execution is simulated with the software ,or by hardware implementation .When EM = 0, control of hardware floating point instruction is transmitted to the processor ;EM = 1, a floating point instruction by software simulation .
TS bits are used to speed up the task switch ,through when it is necessary coprocessor switching method for this purpose .Each when the task switching ,processor TS 1.When TS = 1,Dr Dre Headphones, the floating point instruction will generate device is not available ( DNA ) anomaly .
MP control WAIT instruction in TS = 1, whether to produce DNA anomaly .MP = 1 and TS= 1 ,WAIT produced abnormal ;MP = 0, WAIT directive ignored TS conditions ,do not generate abnormal .
3.CR2 and CR3control registerCR2 and CR3 by thepaging mechanism using the .CR2 used to occurwhen error message page exception report .When the page is abnormal, the page exception processor caused by linear address stored in the CR2 .
Operating system page exception handler can check CR2 content,thus find out the linear address space in which page caused the abnormal .CR3 is used to save thepage table of the initial physical address .
The directory is page aligned ,so only 20effective,low 12 bits are reserved for future use .To the CR3 to mount a new value, low 12 to0;but from the CR3 value,low 12 bits arethen slightly .
When using MOV command to reset the CR3 value,Moncler Jackets,will cause the paging mechanism for high speed buffer contents invalid ,with this method, can enable paging mechanism before, that the PG position before 1, a refresh page cache mechanism .
CR3 storagedevice even in the CR0 register PG bitor bits of PE 0can also be arranged in,such as in real mode can also be set to CR3 ,the initialization of the paging mechanism .In task switching ,CR3 willbe changed ,but if the new tasks of CR3 valueand the original tasks of CR3 value is the same,then the processor does not refresh the page cache ,so that when the task sharing also have faster execution speed .
80386 adds several control registers ,CR0 CR1CR2CR3CR4.CR1 register.Register the bits in CR0 0PE markers,31PGmarkers ,the two bit control segmentation and paging management mechanism of operation ,Beats By Dre Headphones,so called them protection control bit .
PE control subsection management mechanism .PE = 0 ,processor running in real mode ;PE = 1 ,the processor to run in protected mode .PG control paging management mechanism .PG = 0 ,disables paging management mechanism ,this subsection management mechanism to generate a linear address directly as a physical address using ;PG = 1 ,enable paging management mechanism ,the linear address via the paging mechanism converts a physical address .
PG and PE and office manager working mode of PG PE processor mode 00mode 01protected mode,disable the paging mechanism 10 illegalcombination of 11 protected mode,enable paging mechanism CR3 save the page directory starting physical address .
CR2 pagefor occurrence of abnormal report an error message .When the page is abnormal, the page exception processor caused by linear address stored in the CR2 .Operating system page exception handler can check CR2 content,thus find out the linear address space in which caused the abnormal page .
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2012年3月24日星期六
Louboutin OutletCh
Ch. 1: Fire & Visions
Chie stood by her locker alone. Her storm-colored eyes and brown hair sparkled in the spring air and the unlikely scent of lavender filled the halls of Veneficia A High. For Chie, the scent of lavender meant something bad was going to happen. She didn’t want to have to believe that this was true, there was something that was supposed to happen and something that wasn’t supposed to happen today. Unfortunately, she saw something horrible. She saw the arrivals of unfamiliar faces. Her expression was blank and serious,Beats Headphones, almost like it was saying Back off and you won’t die.
“Hey, Chie, snap out of it!” a voice yelled. She blinked and Laura, a girl with blue hair, was standing right in front of her. Chie shook her head powerfully and her eyebrow rose slightly,Louboutin Outlet, “Huh?” Laura stared at her and sighed, “You were zoning out again.” Somehow her eyes suddenly widened at the thought that she was. If it wasn’t bad enough that Laura was accusing of her of zoning out, it was the horrible thought that she really was without notice. “Are you even sure that I was?” asked Chie in a soft voice. If her vision was right, the purple-haired girl would arrive with a male that seemed so hard and cold in his face that it wasn’t even possible.
A boy with spunky red hair, almost like fire,Beats Headphones, walked up to Chie and Laura. “Alistair,” Laura cooed excitedly. His gothic suit was starting to gleam in the light. Alistair nodded solemnly. Chie suddenly jerked her head to the far hall of school. Standing there was a girl who looked about fifteen. Her belly-button showed under her t-shirt, so black and yet, it was so perfect. A golden chain hung around her neck and with the faint blue jean-shorts, it looked stunning. Of course the cowgirl boots seemed to work as well. Standing beside her was a tall male who looked about seventeen. His orange t-shirt was perfectly complimented with a silver necklace and a silver jacket, the hood was lined with whitish-tan fur.
As Chie stared at them, the two strode down the hall, staring at the three with locking glances. The two didn’t even turn back to the surroundings. Nick, one of Chie’s friends, passed the two. They didn’t even seem to notice him at all. They continued walking. Nick’s blue tie seemed to coordinate with his yellow sweater vest and white button down shirt. He sighed heavily. “What is with those two, they’re so quiet?” Nick asked Chie, raising a black eyebrow. Laura spoke for her, “They’re new here. I heard from someone that they were supposed to be here a week ago but their flight from California was delayed so they arrived yesterday.” Chie nodded. Alistair stared at the purple haired girl in amazement.
“She seems interesting,” he smirked. She walked up to him, “And that’s just the beginning, there’s more to me than you might think.” The male standing next to her looked at Alistair for a second and grunted with dissatisfaction. “You know, if you want to, you could sit with us at lunch in a few hours,” Nick smiled. “I would love to, but my brother can’t, he’s in the senior class, I’m a sophomore,” she told him softly.
Chie snorted secretively. “Quite rude of you,” the light brown haired boy told her. Chie’s eyes widened with shock. “How did you-?” Chie began, but was interrupted by Alistair. “He has good hearing.” “No duh,” she teased. “Well, that’s Jackson for you,” the purple haired girl smirked. Jackson noticed that everything was going perfectly. He glared at his sister evilly, almost like he was going to say something. “Winter,” Jackson growled.
Winter stared at him for five seconds and narrowed her eyes. Chie and Alistair chuckled for about a second until Laura and Nick flashed a warning glance telling them to stop. Winter rolled her eyes, for the first time they looked like a dead flame. “Winter, we should go,” Jackson grinned, his perfectly pink lips separated. Winter gave him a sad glance,Coach Outlet, slowly nodding which led to her small, weak, “Okay.” Somehow her expression gave some ideas of what could’ve been hidden about her brother.
As Jackson strode away from his sister something seemed to change. Winter shortly followed him; her short bob bounced as the bright sun danced across it almost like a purple flame. Chie turned to Alistair in wonder. “What is up with them?” Laura asked finally. Her blue hair started to sparkle an almost silver color as something almost so perfect happened to her. A shimmer of light swirled around her and the suddenly fairy wings appeared on her back.
If there was almost something odd about how the magic just suddenly appeared in the school, then it wasn’t even noticed anymore. “Something seems off about them,” Alistair sighed. Chie stared at Winter for a minute, and then glanced at him darkly. If something was right, then it was ever so wrong. Of everything, there was a risk factor for everyone was willing to take. Everyone turned to Nick for a minute. He cowered. Alistair stared at him in disappointment. “Nick, are you seriously going to cower down just because everyone is relying on you?” he growled lowly. “Well,” Nick began, “I want to be brave, but I just don’t have that aspect in me yet.”
Chie sighed, “Nick, we’re counting on you for something like this.” Laura stared blankly. “If we count on Nick, then who knows what kind of danger we could get in,” Laura reasoned. In her ideas, she was the smart one. In reality, Alistair was much more intelligent. To Chie, Alistair was like a brother, even though she didn’t have any siblings. Nick, still standing, looked in the distance and saw a large flash of light. “That’ll teach you not to rebel against me!” Jackson growled to his sister, Winter, who was crumpled on the ground in tears. Her light purple hair was darkened. “I don’t need to do this with you,” he continued, “I can do this on my own.”
For the first time Alistair growled angrily. Chie held his hand to prevent him from causing another injury. “Alistair, calm down, it’s just a sibling argument,Louboutin Shoes,” Laura assured. “Doubtable,” sneered Chie, who was still getting Alistair to look away from the newbies. “Fine,” Alistair sighed as soon as he looked away. Chie’s eyes widened as a new vision struck. She saw evil, sarcasm, and blood. She saw the true face of horror, and she saw Winter, so weak, and yet she was willing to fight someone.
Three hours passed and now it was the free lunch period. The scent of lavender was still in the air, sensing that something was truly and utterly wrong. Alistair sniffed the air. He, too, smelt the lavender essence in the cafeteria. “C-can I sit with you?” a weak voice asked. Nick turned to see Winter. Chie looked closely and saw how much darker her hair was. “Sure, you also need to get something to eat,” Alistair reminded, “you seem skinny.” Winter looked off in the distance, sure enough; Jackson was staring at her in a warning way.
Winter continued to wait, when Jackson passed by, she would use her one power to create lunch from one single zap. Even then she couldn’t preform magic. Something was truly wrong.
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With everything that goes on in my life,
There are certain decisions that I can't even figure out
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There are certain things that teenagers
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Everyday is another day
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No one knows how fake this smile is
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I can live through it on my own
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You caught my eye
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