山东省济宁市金乡县职业中等专业学校2023-2024学年度高一上学期9月月考《单片机技术应用》试题

山东省济宁市金乡县职业中等专业学校

2023-2024学年度高一上学期第一次月考

《单片机技术应用》试题

一、解释下列指令的含义（每空2分，共30分）

1. MOVX B,@R1                                        
2. MOVC A,@A+DPTR                                      
3. XCH A,@R1                                        
4. SWAP A                                         
5. POP ACC                                        
6. ADDC A,@RO                                        
7. DEC A                                         
8. ORL A,#0FH                                        
9. CPL A                                         
10. RLC A                                         
11. JNZ LOOP                                        
12. DJNZ R2,LOOP                                       
13. SJMP $                                         
14. CLR C                                         
15. JBC C,LOOP                                        

 

二、设（A）=9DH，（R1）=C5H，（CY）=0，（C5H）=46H写出指令的执行结果。若为运算指令，要同时写出标志位状况。(20分)

1. XCHD A,@R1                                       
2. SWAP A                                        
3. ADD A,C5H                                       
4. ADDC A,@R1                                       
5. SUBB A,#C5H                                       

三、简答题(每题5分，共30分)

1、如何用指令区别访问的是不同的存储空间？