WIP: Translate Bootstrap/linux-bootstrap-2#4
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mauri870 wants to merge 1 commit intotranslation-ptbrfrom
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WIP: Translate Bootstrap/linux-bootstrap-2#4mauri870 wants to merge 1 commit intotranslation-ptbrfrom
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mauri870
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Jan 7, 2018
| Vamos ver primeiro sobre segmentação, paginação será abordada na seção seguinte. | ||
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| As you can read in the previous part, addresses consist of two parts in real mode: | ||
| Como você pode ler na parte anterior, endereços são compostos por dois componentes no modo real: |
mauri870
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Jan 7, 2018
Booting/linux-bootstrap-2.md
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| * if G is 0, Limit is interpreted in terms of 1 Byte and the maximum size of the segment can be 1 Megabyte. | ||
| * if G is 1, Limit is interpreted in terms of 4096 Bytes = 4 KBytes = 1 Page and the maximum size of the segment can be 4 Gigabytes. Actually, when G is 1, the value of Limit is shifted to the left by 12 bits. So, 20 bits + 12 bits = 32 bits and 2<sup>32</sup> = 4 Gigabytes. | ||
| Resumidamente: | ||
| * se G for 0, Limit é interpretado como 1 Byte e o tamanho máximo do segmento é 1 Megabyte. |
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I think interpretado com escala de sounds more correctly.
mauri870
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Booting/linux-bootstrap-2.md
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| * A flag `S` no bit 44 especifica o tipo de descritor. Se `S` for 0 então esse segmento é um segmento de sistema, caso contrário se `S` for 1 então este é um segmento de código ou dados (segmentos de Stack são segmentos de dados que precisam de acesso leitura/escrita). | ||
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| To determine if the segment is a code or data segment we can check its Ex(bit 43) Attribute marked as 0 in the above diagram. If it is 0, then the segment is a Data segment otherwise it is a code segment. | ||
| Para determinar se o segmento é de código ou dados nós podemos checar o atributo (bit 43) marcado como 0 o diagrama acima. Se ele for igual a 0, então o segmento é de dados caso contrário ele é um segmento de código. |
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