微機原理-課程設(shè)計電風(fēng)扇程序設(shè)計(編輯修改稿)
2025-08-03 14:02 本頁面
【文章內(nèi)容簡介】 KEY1 DB 00H KEY2 DB 00H KEY3 DB 00H KEY1_YUSHU DB 00H KEY2_YUSHU DB 00H KEY3_YUSHU DB 00H THREE DB 03H TWO DB 00H FREE_START DB 00H SHANGCI_START DB 00H DANGQIAN_START DB 00H DATAS ENDS STACKS SEGMENT。此處輸入堆棧段代碼 DW 100H DUO(0) STACKS ENDS CODES SEGMENT ASSUME CS:CODES,DS:DATAS,SS:STACKS START: MOV AX,DATAS MOV DS,AX 。此處輸入代碼段代碼。8253芯片初始化 MOV DX,CONTROL MOV AL,00110110B OUT DX,AL MOV DX,COUNT0 。置初值1000H MOV AL,00H OUT DX,AL MOV AH,10H 。 OUT DX,AL MOV DX,T8255MODE 。模式字輸入 MOV AL,90H 。端口A作為輸入，端口B作為輸出 OUT DX,AL MOV DX,T8255B 。對燈清零 MOV AL,0FFH OUT DX,AL MOV DX,T8255C 。對電機進(jìn)行清零； MOV AL,OFFH OUT DX,AL JMP L1 READ: MOV DX,T8255A 。讀取端口A的鍵值 IN AL,DX MOV BX,00H MOV BL,TEMPK1 MOV TEMPK1,AL XOR BL ,AL CMP BL,01H 。判斷風(fēng)速鍵是否按下 JZ ADD_K1 CMP BL,02H 。判斷類型鍵是否按下 JZ ADD_K2 CMP BL,03H JZ ADD_K3 CMP BL,04H 。判斷停止鍵是否按下 JZ L10 MOV BL,SHANGCI_START 。如果沒有按鍵按下，判斷上次狀態(tài) CMP BL,01H JZ L1 CMP BL,02H JZ L2 CMP BL,03H JZ L3 CMP BL,04H JZ L4 CMP BL,05H JZ L5 CMP BL,06H JZ L6 CMP BL,07H JZ L7 CMP BL,08H JZ L8 CMP BL,09H JZ L9 CMP BL,0AH JZ L10 ADD_K1: INC KEY1 MOV AL,KEY1 MOV AH,00H DIV THREE MOV KEY1_YUSHU,AH JMP CONNEC ADD_K2: INC KEY2 MOV AL,KEY2 MOV AH,00H DIV THREE MOV KEY2_YUSHU,AH JMP CONNECT ADD_K3: INC KEY3 MOV AL,KEY3 MOV AH,00H DIV TWO MOV KEY3_YUSHU,AH JMP CONNECT CONNECT: MOV CL,FREE_START MOV AH,KEY1_YUSHU MOV AL,KEY2_YUSHU MOV BL,KEY3_YUSHU CMP BL,00H JZ STOP CMP BL,01H JZ START
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鄂ICP備17016276號-1