基于at89s51的數(shù)字電子琴(編輯修改稿)
2025-07-23 21:02 本頁面
【文章內(nèi)容簡介】 R,TABLEMOVC A,@A+DPTRMOV P0,AMOV A,KEYBUFMOV B,2MUL ABMOV TEMP,AMOV DPTR,TABLE1MOVC A,@A+DPTRMOV STH0,AMOV TH0,AINC TEMPMOV A,TEMPMOVC A,@A+DPTRMOV STL0,AMOV TL0,ASETB TR0DK2A: MOV A,P3ANL A,0FHXRL A,0FHJNZ DK2ACLR TR0NOKEY2:MOV P3,0FFHCLR MOV A,P3ANL A,0FHXRL A,0FHJZ NOKEY3LCALL DELY10MSMOV A,P3ANL A,0FHXRL A,0FHJZ NOKEY3MOV A,P3ANL A,0FHCJNE A,0EH,NK9MOV KEYBUF,8LJMP DK3NK9: CJNE A,0DH,NK10MOV KEYBUF,9LJMP DK3NK10: CJNE A,0BH,NK11MOV KEYBUF,10LJMP DK3NK11: CJNE A,07H,NK12MOV KEYBUF,11LJMP DK3NK12: NOPDK3:MOV A,KEYBUFMOV DPTR,TABLEMOVC A,@A+DPTRMOV P0,AMOV A,KEYBUFMOV B,2MUL ABMOV TEMP,AMOV DPTR,TABLE1MOVC A,@A+DPTRMOV STH0,AMOV TH0,AINC TEMPMOV A,TEMPMOVC A,@A+DPTRMOV STL0,AMOV TL0,ASETB TR0DK3A: MOV A,P3ANL A,0FHXRL A,0FHJNZ DK3ACLR TR0NOKEY3:MOV P3,0FFHCLR MOV A,P3ANL A,0FHXRL A,0FHJZ NOKEY4LCALL DELY10MSMOV A,P3ANL A,0FHXRL A,0FHJZ NOKEY4MOV A,P3ANL A,0FHCJNE A,0EH,NK13MOV KEYBUF,12LJMP DK4NK13: CJNE A,0DH,NK14MOV KEYBUF,13LJMP DK4NK14: CJNE A,0BH,NK15MOV KEYBUF,14LJMP DK4NK15: CJNE A,07H,NK16MOV KEYBUF,15LJMP DK4NK16: NOPDK4:MOV A,KEYBUFMOV DPTR,TABLEMOVC A,@A+DPTRMOV P0,AMOV A,KEYBUFMOV B,2MUL ABMOV TEMP,AMOV DPTR,TABLE1MOVC A,@A+DPTRMOV STH0,AMOV TH0,AINC TEMPMOV A,TEMPMOVC A,@A+DPTRMOV STL0,AMOV TL0,ASETB
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