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Update Booting/linux-bootstrap-2.md

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hailin cai
2016-02-24 11:07:15 -05:00
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@@ -475,7 +475,7 @@ int query_mca(void)
}
```
这个方法设置`ah`寄存器的值为`0xc0`，然后调用`0x15` BIOS中断。中断返回之后代码检查 [carry flag](http://en.wikipedia.org/wiki/Carry_flag)。如果它被置位，说明BIOS不支持(**MCA**)[https://en.wikipedia.org/wiki/Micro_Channel_architecture]。如果CF被设置成0，那么`ES:BX`指向系统信息表。这个表的内容如下所示：
这个方法设置`ah`寄存器的值为`0xc0`，然后调用`0x15` BIOS中断。中断返回之后代码检查 [carry flag](http://en.wikipedia.org/wiki/Carry_flag)。如果它被置位，说明BIOS不支持[**MCA**](https://en.wikipedia.org/wiki/Micro_Channel_architecture)。如果CF被设置成0，那么`ES:BX`指向系统信息表。这个表的内容如下所示：
```
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