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硬件課程設(shè)計(jì)報(bào)告---可存儲式電子琴(編輯修改稿)

2025-02-17 18:13 本頁面
 

【文章內(nèi)容簡介】 AL, 28H OUT DX, AL MOV AL, 14H OUT DX, AL CALL DELAY JMP GG B55: MOV DX, 208H MOV AL, 75H OUT DX, AL MOV AL, 12H OUT DX, AL CALL DELAY JMP GG B66: MOV DX, 208H MOV AL, 36H OUT DX, AL MOV AL, 11H OUT DX, AL CALL DELAY JMP GG B77: MOV DX, 208H MOV AL, 12H OUT DX, AL MOV AL, 10H OUT DX, AL CALL DELAY JMP GG LED DB 07H,66H,06H,3FH DB 00H,00H,00H,00H DB 7FH,6DH,5BH,71H DB 00H,00H,00H,00H DB 00H,00H,00H,00H DB 00H,00H,00H,00H DB 00H,00H,00H,00H DB 00H,00H,00H,00H DB 6FH,7DH,4FH,79H DB 00H,00H,00H,00H DB 77H,7CH,39H,5EH DB 00H,00H,00H,00H DB 00H,00H,00H,00H DB 00H,00H,00H,00H DB 00H,00H,00H,00H DB 00H,00H,00H,00H DELAY PROC NEAR MOV DX, 200H MOV AL, 80H OUT DX, AL PUSH CX MOV CX, 60000D LOOP $ MOV DX, 200H MOV AL, 00H OUT DX, AL POP CX RET DELAY ENDP CODE ENDS END STARTZ8279 EQU 212HD8279 EQU 210HLEDMOD EQU 00H 。左邊輸入,八位顯示外部譯碼八位顯示LEDFEQ EQU 38H 。掃描頻率CODE SEGMENTASSUME CS:CODE, DS:CODESTART:MOV DX,Z8279 。8279初始化 MOV AL, 00H OUT DX, AL MOV AL, 38H OUT DX,AL MOV DX, 20BH 。8253初始化 MOV AL, 00110111B OUT DX, AL PUSH CSPOP DSMOV DX, Z8279MOV AL, LEDMODOUT DX, ALMOV AL, LEDFEQOUT DX, ALMOV DX, D8279MOV AL, 7FHOUT DX, ALMOV DX, D8279 MOV AL, 7FHOUT DX, ALMOV DX, D8279 MOV AL, 7DHOUT DX, ALMOV DX, D8279 MOV AL, 7FHOUT DX, ALMOV DX, D8279 MOV AL, 70H OUT DX, AL MOV DX, D8279 MOV AL, 5bH OUT DX, AL MOV DX, D8279 MOV AL, 70H OUT DX,AL MOV DX,D8279 MOV AL,76H OUT DX,AL 。以上為寫(AEDK8688) NOP PD: MOV DX, 200H MOV AL, 00H OUT DX, AL MOV AL, 00H MOV DX, Z8279 MOV AL, 0C2H OUT DX, AL 。置空FIFO寄存器 WAIIT: NOP IN AL, DX MOV BL, AL AND AL, 80H CMP AL, 80H JE WAIIT 。FIFO正在清除期間則跳轉(zhuǎn)等待 MOV AL, BL AND AL, 0FH CMP AL, 00H JE WAIIT 。MOV AL,40H 。寫 讀FIFO RAM命令字(問題出在這里) 。OUT DX,AL 。MOV DX,D8279 。讀入FIFO RAM內(nèi)容 。IN AL,DX 。無鍵按下則等待 NOP 。查表,將鍵碼放入AL中 LEA BX, LED XLAT MOV DX, D8279 。將AL中內(nèi)容寫到數(shù)碼管上 OUT DX, AL MOV AL, 00H MOV DX, D8279 。判斷是哪個(gè)鍵 IN AL, DX MOV BL,AL MOV DX,Z8279 。清FIFO RAM寄存器 MOV AL,0C2H OUT DX,AL MOV AL,BL CMP AL,28H 。高音跳轉(zhuǎn) JE GG1 CMP AL,02H JE B1 CMP AL,0AH JE B2 CMP AL,22H JE B3 CMP AL,01H JE B4 CMP AL,09H JE B5 CMP AL,21H JE B6 CMP AL,00H JE B7B1: MOV DX, 208H MOV AL, 24H OUT DX, AL MOV AL, 38H OUT DX ,AL CALL DELAY JMP PDB2: MOV DX, 208H MOV AL, 07H OUT DX, AL MOV AL, 34H OUT DX, AL CALL DELAY JMP PDB3: MOV DX, 208H MOV AL, 34H OUT DX, AL MOV AL, 30H OUT DX, AL CALL DELAY JMP PDB4: MOV DX, 208H MOV AL, 65H OUT DX, AL MOV AL, 28H OUT DX, AL CALL DELAY JMP PD GG1:JMP GG 。中轉(zhuǎn)一下 MM:JMP WAIIT B5: MOV DX, 208H MOV AL, 51H OUT DX, AL MOV AL, 25H OUT DX, AL CALL DELAY JMP PD B6: MOV DX, 208H MOV AL, 72H OUT DX, AL MOV AL, 22H OUT DX, AL CALL DELAY JMP PD B7: MOV DX, 208H MOV AL, 24H OUT DX, AL MOV AL, 20H OUT DX, AL CALL DELAY JMP PD GG: MOV DX, 200H MOV AL, 00H OUT DX, AL MOV AL, 00H MOV DX, Z8279 MOV AL, 0C2H OUT DX, AL 。置空FIFO寄存器WAIIT1: NOP IN AL, DX MOV BL, AL AND AL, 80H CMP AL, 80H JE WAIIT1 。FIFO正在清除期間則跳轉(zhuǎn)等待 MOV AL, BL AND AL, 0FH CMP AL, 00H JE WAIIT1 。MOV AL,40H 。寫 讀FIFO RAM命令字 。OUT DX,AL 。MOV DX,D8279 。讀入FIFO RAM內(nèi)容 。IN AL,DX 。無鍵按下則等待 NOP 。查表,將鍵碼放入AL中 LEA BX, LED XLAT MOV DX, D8279 。將AL中內(nèi)容寫到數(shù)碼管上 OUT DX, AL MOV AL, 00H MOV DX, D8279 。判斷是哪個(gè)鍵 IN AL, DX MOV BL,AL MOV DX,Z8279 。清FIFO RAM寄存器 MOV AL,0C2H OUT DX,AL MOV AL,BL CMP AL,29H 。中音跳轉(zhuǎn) JE MM CMP AL,02H JE B11 CMP AL,0AH JE B22 CMP AL,22H JE B33 CMP AL,01H JE B44 CMP AL,09H JE B55 CMP AL,21H JE B66 CMP AL,00H JE B77 B11: MOV DX, 208H MOV AL, 12H OUT DX, AL MOV AL, 18H OUT DX ,AL
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