單片機(jī)課程設(shè)計(jì)報(bào)告電子琴(文件)
【正文】 LCALL MAIN LJMP START。MAIN: CLR A MOVC A,A+DPTR MOV R1,A INC DPTR CLR A MOVC A,A+DPTR MOV R0,A ORL A,R1 JZ MAIN_1 MOV A,R0 ANL A,R1 CJNE A,0FFH,MAIN_2 LJMP MAIN_0MAIN_2: MOV TH0,R1 MOV TL0,R0 SETB TR0 SJMP MAIN_3MAIN_1: CLR TR0MAIN_3: CLR A INC DPTR MOVC A,A+DPTR MOV R2,AMAIN_4: LCALL DELAY200 DJNZ R2,MAIN_4 INC DPTR LJMP MAINMAIN_0: RET。DELAY200: MOV R3,20DELAY200A: MOV R4,20DELAY200B: MOV R5,248 DJNZ R5,$ DJNZ R4,DELAY200B DJNZ R3,DELAY200A RET。TABLE: DB 0FEH, 25H,02H, 0FEH,25H,02H 。0FEH,98H,(4) DB 0FEH,25H,02H,0FEH,84H,02H 。0FDH,80H,(5\) DB 0FEH,57H,02H,0FEH,84H,02H 。 END 11 / 11。0FEH,07H,(7\) DB 0FEH,84H,02H,0FEH,57H,02H DB 0FEH,84H,04H,0FEH,25H,04H DB 0FEH,25H,02H,0FEH,84H,02H DB 0FEH,57H,02H,0FDH,80H,02H DB 0FEH,07H,02H,0FEH,57H,02H D
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鄂ICP備17016276號(hào)-1