通过8255、8259、8253原件，用按钮控制二极管亮灭------ 汇编源代码

最新推荐文章于 2022-04-11 20:03:20 发布

2017927七叶

最新推荐文章于 2022-04-11 20:03:20 发布

阅读量1.9k

点赞数

分类专栏：汇编

本文链接：https://blog.youkuaiyun.com/zqq2017927/article/details/84713817

版权

汇编专栏收录该内容

3 篇文章

订阅专栏

CODE SEGMENT
ASSUME CS:CODE
START:   MOV AX,0
   MOV ES,AX
   MOV BX,4*80H
   MOV ES:WORD PTR[BX],OFFSET INTRA
   MOV ES:WORD PTR[BX+2],SEG INTRA
   MOV AL,00010011B
   OUT 20H,AL
   MOV AL,10000000B
   OUT 22H,AL
   MOV AL,00000001B
   OUT 22H,AL
   MOV AL,11111110B
   OUT 22H,AL
   MOV AL,10000100B
   OUT 66H,AL
   MOV AL,00010001B
   OUT 46H,AL
   STI
AGAIN:   MOV AL,80H
   OUT 0,AL
   JMP AGAIN
INTRA:   PUSH AX
   PUSH BX
   MOV BL,00000001B
NEXT:   MOV AL,BL
   OUT 62H,AL
   ROL BL,1
   MOV AL,2
   OUT 40H,AL
AGAIN1:   IN AL,64H
   TEST AL,00000010B
   JZ AGAIN1
   MOV AL,100
   OUT 40H,AL
   JMP NEXT
   MOV AL,00100000B
   OUT 20H,AL
   POP BX
   POP AX
   IRET
   MOV AH,4CH
   INT 21H
CODE ENDS
END START