皮皮学，免费搜题
登录
搜题
【简答题】
已知程序执行前有A=02H,SP=42H,(41H)=FFH,(42H)=FFH。 调用 下述 子 程序执行后,求A=( );SP=( );(41H)=( );(42H)=( );PC=( ) FUN1: POP DPH POP DPL ; 弹栈一次 SP 减 1 ,此时 SP=40H MOV DPTR,#3000H ; 数据存储器, DPH=30H,DPL=00H RL A ; 循环, A=0000 0100B=04H MOV B,A ;B=04H MOVC A,@A+DPTR ; 读取程序存储器, A 中存放带查找操作数 ; 在单元地址相对于表首地址的偏移量 , 此时 ; A=3004H, ( A ) =50H PUSH ACC ; 压栈一次 SP 加 1 ,此时 SP=41H,PCL=50H MOV A,B ;A=B=04H INC A ; 带进位的加法指令,即 A+1=A ,此时 A=05H MOVC A,@A+DPTR ;A=3005H, ( A ) =80H PUSH ACC ;PCH=80H , SP=42H RET ;RET 把子程序调用时压入堆栈中断点的地 ; 址恢复到 PC 中 ,SP=40H (压栈前的 PC 值) ORG 3000H DB 10H,80H,30H,80H,50H,80H
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
反馈参考答案：
举一反三
【简答题】把所给字母组成单词。 1. s a s p ________________ 2. e a t ________________ 3. a t e r w ________________ 4. f f e e c o ________________ 5. o m s e ________________ 6. d i n k r ________________ 7. m e l l s __...
【单选题】Haley cited the examples of Joe Delaney and Harry belafonte to show that _______.
A.
some people never succeed despite their hard work
B.
people who have dreams have to suffer
C.
fpeople have to make sacrifices to live creatively
D.
successful artists always have dreams
【简答题】根据图片写单词。 1. m________________ 2. t________________ 3. p________________ 4. w________________
【判断题】P87. 1. T or F. 1. We may get on well with many people, but we make friends
with only a few of them.
A.
正确
B.
错误
【简答题】字母排队组单词。 1. l, g, h, t, i ________________ 2. w, o, w, n, d, i ________________ 3. b, a, r, d, o ________________ 4. p, c, t, r, u, e, i ________________
【简答题】给字母排队组单词。 1. g, o, a __________________ 2. w, s, e, i __________________ 3. s, r, a, t __________________ 4. i, n, w, r, t, e __________________ 5. y, b, a, b __________________
【简答题】单词拼写: 1. The w______ report says there will be a strong wind today. 2. The t______ will stay above zero in the daytime. 3. The rain will stop our school's a______. The student's won't be happy about i...
相关题目：
参考解析：
知识点：
题目纠错 0
发布
