微機計算機原理及接口技術實驗指導書帶程序(文件)
【正文】 r3: mov ah,2 mov dl,[si] int 21h inc si loop r3 pop si pop dx pop bx ret printout endp code ends end main 實驗九 8255， 8253 設計 dseg segment music dw 250,2,330,2,440,16,440,2,494,4,587,2,440,4 dw 440,2,392,2,330,2,294,6,440,8,294,28,330,4 dw 440,16,250,4,330,2,494,8,440,2,440,4,392,2,330,2 dw 294,4 ,330,2,392,2,330,16,250,4,262,4,220,4,262,4 dw 330,4,440,6,392,2,330,4,294,8,250,2,294,2,220,2,195,2 dw 220,16,1 dseg ends cseg segment assume cs:cseg,ds:dseg main proc far 27 start: mov ax,dseg mov ds,ax mov es,ax mov si,offset music circle: mov bx,[si] cmp bx,1 je exit1 call sound call delay jmp circle exit1: in al,61h and al,0fch out 61h,al mov ax,04c00h int 21h main endp sound proc near jishu: mov al,0b6h out 43h,al mov ax,034deh mov dx,12h mov cx,[si] div cx out 42h,al mov al,ah out 42h,al sounding: in al,61h or al,3 out 61h,al return1:inc si inc si ret sound endp delay proc near mov dx,[si] 28 lo1: mov bx,350 lo2: mov cx,0 delay1: loop delay1 dec bx jnz lo2 dec dx jnz lo1 return2: inc si inc si ret delay endp cseg ends end main 實驗十 時鐘設計 dseg segment oldadd dw 0,0 dseg ends sseg segment db 100 dup(?) sseg ends cseg segment main proc far assume cs:cseg,ds:dseg,ss:sseg s1: push ds sub ax,ax push ax mov ah,035h mov al,01ch int 21h mov oldadd,bx mov [oldadd+2],es mov ah,025h mov dx,seg start mov ds,dx 29 mov dx,offset start mov al,01ch int 21h mov dx,offset s2 int 27h start: cli mov ax,0b800h mov ds,ax mov si,120 mov ah,02ah int 21h mov al,dh call disp mov al,dl call disp mov ah,02ch int 21h mov al,ch call disp mov al,cl call disp mov al,dh call disp mov al,dl call disp sti iret s2: main endp disp proc push bx mov ah,0 mov bl,10 div bl add al,48 30 mov [si],al inc si mov al,07ch mov [si],al inc si add ah,48 mov [si],ah inc si mov ah,07ch mov [si],ah inc si mov ah,33 mov [si],ah inc si mov ah,07ch mov [si],ah inc si pop bx ret disp endp cseg ends end main 。 ax,the number push bx push dx push si push cx mov bx,10 mov dx,0 r1: div bx add dl,30h mov si,offset printstr add si,cx dec si 24 mov [si],dl mov dx,0 cmp ax,0 jz r2 loop r1 r2: pop cx mov si,offset printstr r3: mov ah,2 mov dl,[si] int 21h inc si loop r3 pop si pop dx pop bx ret printout endp code ends
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