大連理工大學(xué)計(jì)算機(jī)原理實(shí)驗(yàn)實(shí)驗(yàn)報(bào)告三

1、計(jì)算機(jī)原理實(shí)驗(yàn)報(bào)告匯編語言編程部分實(shí)驗(yàn)（3）名稱：計(jì)算學(xué)生平均成績(jī)實(shí)驗(yàn)一、實(shí)驗(yàn)?zāi)康模?、熟練掌握運(yùn)算類指令以及其對(duì)各狀態(tài)標(biāo)志位的影響。2、掌握運(yùn)算類程序的設(shè)計(jì)及調(diào)試方法。3、掌握BC碼的基本知識(shí)和BC碼的轉(zhuǎn)換。二、實(shí)驗(yàn)要求：在DO環(huán)境下利用EDIT軟件來編輯源文件，并使用MAS和LINK工具對(duì)源文件進(jìn)行編譯 鏈接，最終在實(shí)現(xiàn)對(duì)30個(gè)學(xué)生成績(jī)的求和以及求平均數(shù)，并將平均數(shù)轉(zhuǎn)換為 BC碼顯示 出來。三、程序流程圖：調(diào)累加和子程序調(diào)求平均值子程序調(diào)轉(zhuǎn)換子程序調(diào)顯示子程序返回DOS圖一求平均分流程圖四、程序清單：datasegmentbufdw60,70,80,90,95,98,20,30,40,50

2、dw25,35,65,67,88,99,100,78,12,23dw100,90,80,70,60,50,59,68,79,90countequ ($-buf)/2data1dw?data2db?data3db?data4db?data5db?buf1db' my name is chongkun 201383109',0dh,0ah,'$'buf2db0dh,0ah,'$'buf3db' The average score is ','$'buf4db' 80,100,100,80,75,66,58,10

3、0,69,95',0dh,0ah,'95,72,78,58,62,63,98,91,72,78',0dh,0ah,'90,85,67,74,82,59,66,88,99,77',0DH,0AH,'$'dataendsssg1segmentdw 100 dup(?)ssg1endscodesegmentassume cs:code,ds:data,ss:ssg1main:mov ax,datamov ds,axlea dx,buf1 mov ah,09h int 21h lea dx,buf4 mov ah,09hint 21hcallac

4、cumcallaveragecallconverleadx,buf3movah,09hint21hcall displayconver: mov al,data2 mov ah,0mov bl,100 div blmov data3,al mov al,ah mov ah,0 mov bl,10 div blmov data4,al mov data5,ah retaccum:movcx,countmovax,0leabx,buflop:addax,bxadd bx,2loop lop mov data1,axretaverage:movmov div mov retax,data1bl,co

5、unt bl data2,aldisplay:lop3:movsi,offset data3mov al,ds:si and al,0f0h mov cl,04h shr al,cl add al,30h mov dl,al mov al,ds:si and al,0fh add al,30h mov dl,al mov ah,02h int 21Hlop4: mov si,offset data4 mov al,ds:si and al,0f0hmovcl,04hshral,claddal,30hmovdl,almoval,ds:siandal,0fhaddal,30hmov dl,almovah,02hint21Hlop5:movsi,offset data5moval,ds:siandal,0f0hmovcl,04hshral,claddal,30hmovdl,almoval,ds:siandal,0fhaddal,30hmov dl,almovah,02hint 21Hlea dx,buf2 movah,09hint21hlop22: mov ax,4c00h; to DOSint