第3章地址空间

3.1大纲地址空间的............................................. ................................... 3-2

3.2操作模式............................................... ................................................ 3- 6

3.3内部ROM区域和外部扩展区域.......................................... 3-8

3.3.1内部ROM区域............................................ ............................... 3-8

3.3.2外部扩展区域............................................ ..................... 3-8

3.4内部RAM区和SFR区........................................... ......................... 3-9

3.4.1内部RAM区............................................ ............................... 3-9

3.4.2特殊功能寄存器（ SFR ）区........................................ 3-9 .....

3.5 EIT向量入口.............................................. ................................................ 3- 23

3.6 ICU量表.............................................. ............................................... 3-24

在地址空间3.7注意事项............................................. ................................... 3-26

第4章企业所得税

4.1外形EIT的..................................................................................................... 4-2

4.2 EIT活动.......................................................................................................... 4-3

4.2.1异常.............................................. ........................................... 4-3

4.2.2中断.............................................. ............................................. 4-3

4.2.3陷阱.............................................. .................................................. 4-3。

4.3企业所得税处理过程.............................................. ................................. 4-4

4.4企业所得税处理机制.............................................. ............................... 4-6

4.5验收EIT活动............................................. ................................... 4-7

4.6保存和恢复PC和PSW .......................................... ................ 4-8

4.7 EIT向量入口.............................................. ................................................ 4- 10

4.8异常处理............................................... ..................................... 4-11

4.8.1保留指令异常（ RIE ） ......................................... ... 4-11

4.8.2异常地址（ AE ） .......................................... ....................... 4-13

4.9中断处理............................................... ........................................ 4-15

4.9.1复位中断（ RI ） .......................................... .............................. 4-15

4.9.2系统中断中断（ SBI ） ......................................... ................ 4-16

4.9.3外部中断（ EI ） .......................................... .......................... 4-18

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