波形发生器汇编程序.doc

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波形发生器汇编程序

ORG? 0000H? SJMP????START? ORG??30H? START:? CJNE? A,#0FFH,KEY? SJMP? $? KEY: JNB??P1.0,KEY0? JNB? P1.1,KEY1? JNB??P1.2,KEY2? JNB??P1.3,KEY3? SJMP? START? KEY0: ACALL SIN? SJMP? KEY? KEY1: ACALL FANG? SJMP? KEY? KEY2: ACALL JUCHI? SJMP? KEY? KEY3: ACALL?SJIAO? SJMP KEY? SIN:? LOOP: MOV?R0,#00H? LOOP1:MOV??A,R0? MOV?????DPTR,#TABLE? MOVC????A,@A+DPTR? MOV?????P2,A? INC?R0? MOV?P0,#0FFH? MOV?R3,P0? L1:? INC?R3? CJNE R3,#00H,L1? CJNE R0,#255,LOOP1? JNB??P1.4,E1? SJMP?LOOP? E1:? RET? FANG:? LOOP2: MOV? A,#00H? MOV? P2,A? MOV? P0,#0FFH? MOV? A,P0? CPL? A? MOV? R3,A? ACALL DELAY? ? ? JNB? P1.4,E2? MOV? A,#0FFH? MOV? P2,A? MOV? P0,#0FFH? MOV? A,P0? CPL? A? MOV? R3,A? ACALL DELAY? SJMP LOOP2? E2:? RET? JUCHI:MOV? A,#00H? LOOP6:MOV? P2,A? INC? A? MOV? P0,#0FFH? MOV? R3,P0? L4:? INC? R3? CJNE?R3,#00H,L4? JNB? P1.4,E3? SJMP?LOOP6? E3:? RET? SJIAO:? MOV? A,#00H? LOOP9:MOV? P2,A? INC? A? MOV? P0,#0FFH? MOV? R3,P0? L5:? INC? R3? CJNE?R3,#00H,L5? CJNE?A,#0FFH,LOOP9? LOOP8:DEC? A? MOV? P0,#0FFH? MOV? R3,P0? L6:? INC? R3? CJNE?R3,#00H,L6? MOV? P2,A? CJNE?A,#00H,LOOP8? JNB? P1.4,E4? SJMP LOOP9? E4:? RET? DELAY:? LOOP3:MOV? R6,#1? LOOP4:MOV? R5,#250? LOOP5:NOP? NOP? 牋 DJNZ?R5,LOOP5? DJNZ?R6,LOOP4? DJNZ?R3,LOOP3? RET? TABLE: DB??80H,83H,86H,89H,8DH,90H,93H,96H? DB??99H,9CH,9FH,0A2H,0A5H,0A8H,0ABH,0AEH? DB??0B1H,0B4H,0B7H,0BAH,0BCH,0BFH,0C2H,0C5H? DB??0C7H,0CAH,0CCH,0CFH,0D1H,0D4H,0D6H,0D8H? DB??0DAH,0DDH,0DFH,0E1H,0E3H,0E5H,0E7H,0E9H? DB??0EAH,0ECH,0EEH,0EFH,0F1H,0F2H,0F4H,0F5H

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