微機原理課程設(shè)計報告-基于8086鋼琴的程序設(shè)計(存儲版)
【正文】 0x0d: key=6。 temp=P3。 temp=P3。 temp=temp amp。 case 0x07: key=0。 temp=temp amp。i0。 ET0=1。mov cl,al wait_pres: in al,dx and al,0fh cmp al,0fh je wait_pres mov cx,002ahdelay: loop delay in al,dx and al,0fh cmp al,0fh je wait_pres mov al,0feh mov cl,alnext_row: mov dx, io8255a out dx,al mov dx, io8255c in al,dx and al,0f0h cmp al,0f0h jne camp rol cl,1 mov al,cl jmp next_rowcamp: mov dx, io8255c in al,dx cmp al,0ebh je duo cmp al,0dbh je ruai cmp al,0bbh je mi cmp al,0edh je fa cmp al,0ddh je suo cmp al,0bdh je la cmp al,0eeh je xi jmp start duo: mov bx,262 call mido jmp start ruai: mov bx,294 call mido jmp start mi: mov bx,330 call mido jmp start fa: mov bx,349 call mido jmp start suo: mov bx,392 call mido jmp start la: mov bx,440 call mido jmp start xi: mov bx,494 call mido jmp start mido PROC near mov dx,io8253ctr mov al,10110110B out dx,al mov dx,0012H mov ax,34deH DIV BX mov dx,io8253a OUT dx,AL MOV AL,AH OUT dx,AL call delay1 retmido endpdelay1 PROC near MOV DX,01FFHDEL1: MOV CX,0FFFFHDEL2: LOOP DEL2 DEC DX JNZ DEL1 retdelay1 endpCODE ENDS END START 附件三：C語言程序清單include unsigned char code table[]={0x3f,0x06,0x5b,0x4f, 0x66,0x6d,0x7d,0x07, 0x7f,0x6f,0x77,0x7c, 0x39,0x5e,0x79,0x71}。,0dh,0ah,39。當按下數(shù)字18時,依次發(fā)出1,2,3,4,5,6,7,”鋼琴”狀態(tài).具有的設(shè)計條件1． PC機一臺，EL教學(xué)實驗箱一臺及
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