【正文】 mov al,[si] cmp al,39h jbe Step1 sub al,7Step1: and al,0fh mov bx,0 mov ah,0 mov cl,12 shl ax,cl add bx,ax inc si mov al,[si] cmp al,39h jbe Step2 sub al,7Step2: and al,0fh mov ah,0 mov cl,8 shl ax,cl add bx,ax inc si mov al,[si] cmp al,39h jbe Step3 sub al,7Step3: and al,0fh mov ah,0 mov cl,4 shl ax,cl add bx,ax inc si mov al,[si] cmp al,39h jbe Step4 sub al,7Step4: and al,0fh mov ah,0 add bx,ax mov ax,bx mov dx,0 mov cx,10000 div cx mov bx,dx and ax,00ffh add al,30h mov dl,al mov ah,2 int 21h mov ax,bx mov dx,0 mov cx,1000 div cx mov bx,dx and ax,00ffh add al,30h mov dl,al mov ah,2 int 21h mov ax,bx mov cl,100 div cl mov bh,ah add al,30h mov dl,al mov ah,2 int 21h mov al,bh mov ah,0 mov cl,10 div cl mov bh,ah add al,30h mov dl,al mov ah,2 int 21h add bh,30h mov dl,bh mov ah,2 int 21h pop si pop dx pop cx pop bx pop ax pop bp ret HtoD endpcode ends end Start四. 實驗結(jié)果（包括必要的截圖）實驗四 匯編語言高級編程專題一. 實驗?zāi)康膮R編語言宏程序設(shè)計； 掌握中斷服務(wù)子程序的編寫。 匯編語言與高級語言的混編。二. 實驗內(nèi)容1 編寫一個宏，求三個數(shù)的最小數(shù)，原型為：MIN3,X,Y,Z,Min macro x,y,z local Continue,Change,Change2,Down push ax push dx mov al,x cmp al,y jg ChangeContinue: cmp al,z jg Change2 jmp DownChange: mov al,y jmp ContinueChange2: mov al,zDown: mov dl,al mov ah, 2 int 21h pop dx pop axendmdseg segment msg db 0dh,0ah,39。please input num:$39。 msg2 db 0dh,0ah,39。 the min num is:$39。 p1 db ? p2 db ? p3 db ?dseg endscseg segment assume cs:cseg,ds:dsegStart: mov ax ,dseg mov ds,ax mov dx,offset msg mov ah,9 int 21h mov ah,1 int 21h mov p1,al mov ah,9 int 21h mov ah,1 int 21h mov p2,al mov ah,9 int 21h mov ah,1 int 21h mov p3,al mov dx,offset msg22 定時器 掛接1ch中斷，正計時60秒后推出，要求屏幕顯示059的秒數(shù)按a鍵后，保留舊時間。重新另起一行開始計時21的0BH功能intno equ 1ch data segment para public 39。data39。timer db 100counter dw 0isdone db 0old1c dw ?,?data endscode segment para public 39。code39。 assume cs:code,ds:dataStart: mov ax,data mov ds,ax mov ax,0 mov es,ax cli mov ax,es:[intno*4] mov old1c[0],ax mov ax,es:[intno*4+2] mov old1c[2],ax sti cli mov word ptr es:[intno*4],offset TimerISR mov word ptr es:[intno*4+2],seg TimerISR stiWaithere: cmp isdone,1 jnz WaithereExit: cli mov ax,old1c[0] mov es:[intno*4],ax mov ax,old1c[2] mov es:[intno*4+2],ax sti mov ax,4c00h int 21hTimerISR proc far push dx push ax mov ax,data mov ds,ax sti inc timerAgain: cmp timer,1000/55 jb Done mov timer,0 mov dl,0dh mov ah,2 int 21h mov ax,counter mov dl,10 div dl mov bh,ah add al,30h mov dl,al mov ah,2 int 21h add bh,30h mov dl,bh mov ah,2 int 21h mov ah,0bh int 21h or al,al jz Do mov ah,8 int 21h xor al,61h jnz Do mov dl,0dh mov ah,2 int 21h mov dl,0ah mov ah,2 int 21h mov counter,1Do: inc counter cmp counter,60 jb Done mov isdone,1Done: pushf call dword ptr old1c cli pop ax pop dx iretTimerISR endpcode ends end Start 寧可累死在路上，也不能閑死在家里！寧可去碰壁，也不能面壁。是狼就要練好牙，是羊就要練好腿。什么是奮斗？奮斗就是每天很難，可一年一年卻越來越容易。不奮斗就是每天都很容易，可一年一年越來越難。能干的人，不在情緒上計較，只在做事上認真；無能的人！不在做事上認真，只在情緒上計較。拼一個春夏秋冬！贏一個無悔人生！早安！—————獻給所有努力的人.學習好幫