【正文】 MTDWRDAA: MOV A,R1 LCALL WRBYT LCALL CACK JB F0,WRNBYT INC R1 DJNZ 2FH,WRDAA LCALL STOP MOV 2FH,08H POP PSW RET。ＢＣＤ碼帶進(jìn)位自身相加，相當(dāng)于乘２ADDC A,R5DA A 。結(jié)果判斷JC DVD3MOV R2,A 。累加部分積MOV R4,AMOV A,R3ADDC A,BMOV R3,ACLR ARLC AXCH A,R2 。0 1 2 3 4 5 DB 00H,07H,07H,01H,06H,00H,01H,07H,07H,01H,07H,06H,00H,00H,00H 。lianxv wr sub==============wr123: nop SETB 。/WR=0 CALL DLY5 SETB 。D=1 (100) CALL DLY5 NOP SETB 。=(34H35H36H)*2+C (十進(jìn)制加) MOV A,3FH ADDC A,3FH DA A MOV 3FH,A MOV A,3EH ADDC A,3EH DA A MOV 3EH,A MOV A,3DH ADDC A,3DH DA A MOV 3DH,A DJNZ R7,LOOP2 NOP RET。定時(shí)器中斷子程序。============CHUAN2: JB ,OUTOUT2 JB ,GGGOOO JB ,GGGO3 JB ,OUTOUT2 INC 35H MOV A,35H CJNE A,01,23 MOV 51H,TH1 MOV 50H,TL1 23: MOV A,35H CJNE A,02,3 MOV 53H,TH1 MOV 52H,TL13: MOV A,35H CJNE A,03,Q MOV 55H,TH1 MOV 54H,TL1Q: SETB 。前 CPL CLR SETB SETB NOP NOP JNB , SETB SETB EX1 POP PSW POP ACC RETI。230=S=(TH1,TL1)*14/6 JNC WAN ACALL KUAI AJMP ZHI。RAM 21H: LCD ADDR***。RAM 25H: LCD DATA*** ORG 0000H AJMP MAIN ORG 000BH AJMP wto ORG 0013H AJMP PINT1 ORG 0030HMAIN: 。===========================。=====================。ACALL AJMP CHUAN2 RETGGGOOO: CLR GGGO3: MOV A,P0 ANL A,03H CJNE A,03H,GGGOO1 AJMP LZHUANGGGOO1: MOV A,P0 ANL A,60H CJNE A,60H,GGGOO2 AJMP RZHUANGGGOO2: MOV A,P0 ANL A,07H CJNE A,00H,RZHUAN MOV A,P0 ANL A,78H CJNE A,00H,LZHUANGOOUT: CLR CLR RETLZHUAN: CLR 。=============================WTO: PUSH ACC MOV R0,30H INC R0 MOV A,200 XRL A,R0 JNZ OUT MOV R0,A。=====================================。/WR=1 CALL DLY5 NOP CLR 。D=1 (101) CALL DLY5 SETB 。/CS=1 CALL DLY5 NOP CLR 。6 7 8 9 .0 DB 05h,06h,07h,05H,04H,00H,05H,03H,05H,05H,07H,04H,05H,05H,02H,04H,07H,06H 。計(jì)算R2乘R6MOV B,R6MUL ABADD A,R3 。夠減，存放新的余數(shù)MOV A,R1MOV R3,AINC R5 。十進(jìn)制調(diào)整MOV R5,AMOV A,R4ADDC A,R4DA AMOV R4,AMOV A,R3ADDC A,R3MOV R3,A 。**********讀出多個(gè)字節(jié)RDNBYT: PUSH PSW MOV PSW,18H LCALL STA MOV A,0A1H 。SLA LCALL WRBYT LCALL CACK JB F0,WRNBYT MOV R1,30H 。從高端移出待轉(zhuǎn)換數(shù)的一位到CY中RLC AMOV R7,AMOV A,R6RLC AMOV R6,AMOV A,R5 。計(jì)算（R2R3－R6R7）MOV R1,AMOV A,R2SUBB A,R6ANL C,/F0 。計(jì)算R2乘R7MOV B,R7MUL ABADD A,R4 。MOV 35H,0AH MOV 36H,0AH mov r0,31h mov 42h,r0LOOP1: MOV A,42H CJNE A,32H,WU MOV A,R0 ADD A,11 AJMP YOUWU: mov a,r0YOU: mov b,03h mul ab mov 41h,a MOVC A,A+DPTR MOV 25H,A CALL WRDA inc 41h mov a,41h movc a,a+dptr mov 25h,a call wrda inc 41h mov a,41h movc a,a+dptr mov 25h,a call wrda