汇编语言⮱⮱001【 】2019-11-21

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章节号	内容
1图片格式(png)	宽度大于620px,保持高宽比减低为620px
1-1	应用
1-1-1	方法

第1章节  基础知识

  ↑↓类的基本结构：

• 1-1 类的初步—定义一个类并创建对象实例

  1-1-1. 导言—用户管理—用户的分类及介绍

• 1-2 类的初步—定义一个类并创建对象实例

  1-2-1. 导言—用户管理—用户的分类及介绍

第2章节 

| 0      | CF   | Carry Flag. Set if the last arithmetic  operation carried (addition) or borrowed (subtraction) a bit beyond the size  of the register. This is then checked when the operation is followed with an  add-with-carry or subtract-with-borrow to deal with values too large for just  one register to contain. |
| 2      | PF   | Parity Flag. Set if the number of set bits in the least significant byte  is a multiple of 2. |
| 4      | AF   | Adjust Flag. Carry of Binary Code Decimal (BCD) numbers arithmetic  operations. |
| 6      | ZF   | Zero Flag. Set if the result of an operation is Zero (0).    |
| 7      | SF   | Sign Flag. Set if the result of an operation is negative.    |
| 8      | TF   | Trap Flag. Set if step by step debugging.                    |
| 9      | IF   | Interruption Flag. Set if interrupts are enabled.            |
| 10     | DF   | Direction Flag. Stream direction. If set, string operations will  decrement their pointer rather than incrementing it, reading memory  backwards. |
| 11     | OF   | Overflow Flag. Set if signed arithmetic operations result in a value too  large for the register to contain. |
| 12-13. | IOPL | I/O Privilege Level field (2 bits). I/O Privilege Level of the current  process. |
| 14     | NT   | Nested Task flag. Controls chaining of interrupts. Set if the current  process is linked to the next process. |
| 16     | RF   | Resume Flag. Response to debug exceptions.                   |
| 17     | VM   | Virtual-8086 Mode. Set if in 8086 compatibility mode.        |
| 18     | AC   | Alignment Check. Set if alignment checking of memory references is done. |
| 19     | VIF  | Virtual Interrupt Flag. Virtual image of IF.                 |
| 20     | VIP  | Virtual Interrupt Pending flag. Set if an interrupt is pending. |
| 21     | ID   | Identification Flag. Support for CPUID instruction if can be set. |

• 2-1 类的初步—定义一个类并创建对象实例

  2-1-1. 导言—用户管理—用户的分类及介绍

• 2-2 类的初步—定义一个类并创建对象实例

  2-2-1. 导言—用户管理—用户的分类及介绍

第3章节 

• 3-1 类的初步—定义一个类并创建对象实例

  3-1-1. 导言—用户管理—用户的分类及介绍

• 3-2 类的初步—定义一个类并创建对象实例

  3-2-1. 导言—用户管理—用户的分类及介绍