計(jì)算機(jī)等級(jí)考試三級(jí)PC技術(shù)上機(jī)13

1、2013年計(jì)算機(jī)等級(jí)考試三級(jí)pc技術(shù)上機(jī)（13）請(qǐng)編制程序，其功能是：內(nèi)存中連續(xù)存放的20個(gè)八位無符號(hào)數(shù)是一個(gè)自動(dòng)抄表儀抄錄的20個(gè)用戶某月的用水量(立方米)，為了控制用水量，水費(fèi)計(jì)算公式如下(x表示用水量;y表示水費(fèi)，單位為分)：a) y=x*70 x10例如：用水量(x)： 04h, 0fh, 18h水費(fèi) (y)：0118h,0514h,094ch試計(jì)算出這20個(gè)用戶應(yīng)繳納的水費(fèi)，結(jié)果用字(word)表示。部分程序已給出, 其中原始數(shù)據(jù)由過程load從文件input1.dat中讀入source開始的內(nèi)存單元中。運(yùn)算結(jié)果要求從result開始存放,由過程save保存到文件output1.da

2、t中。填空begin和end之間已給出的一段源程序使其完整(空白已用橫線標(biāo)出,每行空白一般只需一條指令, 但采用功能相當(dāng)?shù)亩鄺l指令亦可),或刪除begin和end之間原有的代碼并自行編程來完成要求的功能。對(duì)程序必須進(jìn)行匯編,并與io.obj鏈接產(chǎn)生prog1.exe執(zhí)行文件,最終運(yùn)行程序產(chǎn)生結(jié)果(無結(jié)果或結(jié)果不正確者均不得分)。調(diào)試中若發(fā)現(xiàn)整個(gè)程序中存在錯(cuò)誤之處, 請(qǐng)加以修改。試題程序：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 ;數(shù)據(jù)區(qū)起始地址lea si,name0 ;原始數(shù)據(jù)文件名mov cx,n ;字節(jié)數(shù)call load ;從input1.dat中讀取數(shù)據(jù);*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 ;結(jié)果數(shù)據(jù)區(qū)首址lea si,name1 ;結(jié)果文件名mov cx,n*2 ;字節(jié)數(shù)call save ;保存結(jié)果到文件retstart endpcode endsend start29c91afe4ced1b6c8795ad9c91afe4ced1b6c8795ad91afe4ced1b6

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