计算机等级考试三级PC技术上机13

1、2013年计算机等级考试三级pc技术上机（13）请编制程序，其功能是：内存中连续存放的20个八位无符号数是一个自动抄表仪抄录的20个用户某月的用水量(立方米)，为了控制用水量，水费计算公式如下(x表示用水量;y表示水费，单位为分)：a) y=x*70 x10例如：用水量(x)： 04h, 0fh, 18h水费 (y)：0118h,0514h,094ch试计算出这20个用户应缴纳的水费，结果用字(word)表示。部分程序已给出, 其中原始数据由过程load从文件input1.dat中读入source开始的内存单元中。运算结果要求从result开始存放,由过程save保存到文件output1.da

2、t中。填空begin和end之间已给出的一段源程序使其完整(空白已用横线标出,每行空白一般只需一条指令, 但采用功能相当的多条指令亦可),或删除begin和end之间原有的代码并自行编程来完成要求的功能。对程序必须进行汇编,并与io.obj链接产生prog1.exe执行文件,最终运行程序产生结果(无结果或结果不正确者均不得分)。调试中若发现整个程序中存在错误之处, 请加以修改。试题程序：extrn load:far,save:farn equ 20rate1 equ 70rate2 equ 120delta equ 10stac segment stackdb 128 dup(?)stac e

3、ndsdata segmentsource db n dup(?)result dw n dup(0)name0 db input1.dat,0name1 db output1.dat,0data endscode segmentassume cs:code,ds:data,ss:stacstart proc farpush dsxor ax,axpush axmov ax,datamov ds,axlea dx,source ;数据区起始地址lea si,name0 ;原始数据文件名mov cx,n ;字节数call load ;从input1.dat中读取数据;*begin*lea si,

4、sourcelea di,resultcldmov cx,nmov bl,rate1mov bh,rate2next: _cmp al,deltaj_ greatmul bljmp storegreat: _mul bh_store: _inc siloop next;*end*lea dx,result ;结果数据区首址lea si,name1 ;结果文件名mov cx,n*2 ;字节数call save ;保存结果到文件retstart endpcode endsend startc29c91afe4ced1b6c8795ad9c91afe4ced1b6c8795ad91afe4ced1b

5、6c8795ad9c91fe4ced1b6c8795ad29c91afedd1b6c87d1b6c8795ad9c91afe4ced1b6c8795ad91afe4ced1b6c8795ad9c91fe4ced1b6c8795ad29c91af95ad9c91afe4ced1b6c8795ad91afe4ced1b6c8795ad9d1b6c8795ad9c91afe4ced1b6c8795a1afe4ced1b6c8795ad91afe4ced1b6c8795ad9c91fe4ced1b6c8795ad29c91afc91fe4ced1d1b6c8795ad9c91afe4ced1b6c87

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