計算機硬件課程設(shè)計電子琴(編輯修改稿)
2025-02-13 03:49 本頁面
【文章內(nèi)容簡介】 節(jié)拍信息的。 .486PORTA EQU 320HPORTB EQU 324HPORTC EQU 328HCTRL EQU 32CHPORTA4 EQU 300HPORTB4 EQU 304HPORTC4 EQU 308HCTRL4 EQU 30CHCODE SEGMENT USE16 ASSUME CS:CODE ORG 1000H BEG: JMP START HFDINGWEI DW ? HFQISHI DW ? HFZHONGZHI DW ? HFBIAOZHI DW ? GONGNENG DB ? YINFU DB ? PINLV DW ? PANDUAN DB ? SHANGYIN DB ? SHANGGONG DB ? DENGZHI DW ? LOWD DW 101,112,125,134,151,167,186 。3MHZ時鐘信號 MID DW 202,224,250,268,302,334,372 HIG DW 402,448,500,536,604,668,744 HUANLE DW 250,250,268,302,302,268,250,224 DW 202,202,224,250,250,224,224 DW 250,250,268,302,302,268,250,224 DW 202,202,224,250,224,202,202,0 JIEPAI DW 8 DUP(25) DW 4 DUP(25),50,2 DUP(25) DW 8 DUP(25) DW 4 DUP(25),50,2 DUP(25) HUIFANG DW 1 DUP(50H) JIEPAI2 DW 8 DUP(50H)START: KSCAN1 PROC NEAR 。主程序，用于掃描功能，并且調(diào)用相關(guān)的程序 PUSH CX 。從這開始就是初始化的一些東西，包括8255的初始化、回放、三色LED的初始化 MOV DX,CTRL MOV AL,91H OUT DX,AL MOV CX,20H ?；卦L的初始化 LEA SI,HUIFANGCHUZHI: MOV AX,0000H MOV WORD PTR[SI],AX INC SI INC SI LOOP CHUZHI LEA SI,HUIFANG MOV HFBIAOZHI,0000H MOV HFDINGWEI,SI MOV HFQISHI,SI MOV SI,HFQISHI 。做出回放地址的起始點 MOV AX,HFQISHI 。做出回放地址的終止點 ADD AX,100H MOV HFZHONGZHI,AX CHUDENG : 。三色led的初始化 MOV DX,20CH MOV EAX,80808080H OUT DX,EAX MOV DX,200H MOV AL,88H OUT DX,AL MOV DX,204H MOV AL,0C0H OUT DX,AL MOV DX,208H MOV EAX,0F0F0F05H OUT DX,EAX RECEIVE: 。形成功能代號，便于下面選擇功能 MOV DX,PORTC IN AL,DX AND AL,0FH CMP AL,0FH CALL FNDKEY1 MOV CL,GONGNENG MOV SHANGGONG,CL CMP GONGNENG,01H JZ RELOP1 CMP GONGNENG,02H JZ RELOP1 CMP GONGNENG,03H JZ RELOP1 CMP GONGNENG,04H JZ RELOP2 CMP GONGNENG,08H JZ RELOP3 RELOP1: CALL GONGDENG CALL TANQIN JMP RECEIVERELOP2: CALL GONGDENG CALL GEQU JMP RECEIVERELOP3: CALL GONGDENG CALL HUIF JMP RECEIVE 。處理完畢之后，返回繼續(xù)讀取功能選擇 POP CX RET KSCAN1 ENDP KSCAN2 PROC NEAR 。尋找對應(yīng)的17音符的按鍵是否按下的子程序，把得到的音符值傳給YINFU MOV CX,02H MOV BL,0FDH 。從Q1列開始掃描LOP3: MOV AL,BL MOV DX,PORTB OUT DX,AL MOV DX,PORTA IN AL,DX AND AL,0FH CMP AL,0FH JZ LOP4 CALL FNDKEY2 JMP LOP5 LOP4: ROR BL,1 LOOP LOP3 MOV YINFU,00H 。如果沒有音符鍵按下則置YINFU為00HLOP5: RET KSCAN2 ENDPFNDKEY1 PROC NEAR 。形成功能鍵的鍵值音 CMP AL,00H JZ FK1LOP3 CMP AL,01H JZ FK1LOP1 CMP AL,02H JZ FK1LOP2 CMP AL,03H JZ FK1LOP3 CMP AL,04H JZ FK1LOP4 CMP AL,08H JZ FK1LOP5 MOV GONGNENG,00H JMP OVERFK1LOP1: MOV GONGNENG,01H JMP OVERFK1LOP2: MOV GONGNENG,02H JMP OVERFK1LOP3: MOV GONGNENG,03H JMP OVERFK1LOP4: MOV GONGNENG,04H JMP OVERFK1LOP5: MOV GONGNENG,08H JMP OVEROVER: RET FNDKEY1 ENDP FNDKEY2 PROC NAER 。形成音符鍵的鍵值 SHL BL,4 OR AL,BL SHR BL,4 MOV YINFU,AL RETFNDKEY2 ENDP SEARCH_FZ PROC NEAR CMP YINFU,0EDH JZ JIAN1 CMP YINFU,0EBH JZ JIAN2 CMP YINFU,0E7H JZ JIAN3 CMP YINFU,0DEH JZ JIAN4
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