微機接口技術(shù)課程設(shè)計報告-全文預(yù)覽
【正文】 yc proc ；延遲程序 push cx push bx mov bx,5000 yc1:movcx,4000 loop $ dec bx jnz yc1 pop bx pop cx mov bl,al mov cx offfh loop $ mov dx,cp mov al,90h out dx,al mov dx,pbp mov al,bl out dx,al movdx,pap in al,dx mov ah,bl not ax lea si table lea di char mov cx,16 r2:cmp ax,[si] jz nxt add si,2 inc di loop r2 nxt:mov dx,dp ；將鍵盤上輸入數(shù)據(jù)顯示在數(shù)碼管上 mov alw2 12 out dx,al mov al,[di] out dx,al mov dx,cp mov al,82h out dx,al call yc pop dx pop cx pop ax pop si ret key endp kg proc ；開關(guān) push ax push bx push cx push dx mov dx,cp ；初始化 c 口為輸入，其他口為輸出 mov al,89h out dx,al mov dx,pcp kg1:in al,dx test al,1 ；當 k1 為 0 時啟動程序 jz kg1 mov cx,5000h kg2:mov dx,pap mov al,ofeh loop kg2 pop dx pop cx pop bx pop ax ret kg endp ds1 proc ；倒數(shù)程序 push di push si push cx push ax lea si,da1 lea di,da1 13 d1:cmp [di],bl jz d2 inc di jmp d1 d2:cmp [si],bh jz d4 inc si jmp d2 d4:mov cc1,di yca proc ；延遲程序 push cx push bx mov bx,1500 c2:mov cx,1000 loop $ dec bx jnz yc2 pop bx pop cx ret yca endp zyc proc ；延遲主程序，主要是用于顯示和延遲 push si push di push ax push bx push cx push dx s2:call exit mov dx,cp ；初始化 a 口， b口為輸出， c 口低四位為輸入，高四位為輸出 mov al,81h out dx,al mov dx,pcp ；判斷 k3 是否為0，如果為 0，則進入延遲 in al,dx test al,4h jnz s3 mov dx,dp mov al,01h out dx,al mov dx,wp 14 mov al,bh out dx,al mov dx,pcp ；顯示燈 mov al,0h out dx,al call yca mov dx,dp mov al,02h out dx,al mov dx,wp mov al,bl out dx,al mov dx,pcp ；顯示燈滅 mov al,40h out dx,al call yca jmp s2 s3:pop dx pop cx pop bx pop ax pop di pop si ret zyc endp exit proc ；退出程序 push ax push bx push cx push dx push di push si mov dx,cp ；初始化 c 口輸入，a,b 口為輸出 mov al,89h out dx,al mov dx,pcp in al,dx test al,2h jz ex1 mov ah,4ch int 21h ex1:pop si pop di
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