【正文】 還有，在做一件事之前做好準備是最重要的，有備無患，即使出了問題也能做到處事不亂，很快解決。我們的程序按照規(guī)范來設(shè)計，把每個子程序模塊化，主程序主要用來調(diào)用，當每個子程序出問題了或者增減發(fā)揮程序是不會受到影響。我們在上系統(tǒng)演示之前就已經(jīng)把大體思路整理好，把基本的素材準備完備。主程序代碼如下：ORG 8300H/*3*/LCALL 9F39HLCALL 9F3CHMOV R6,5MAIN:MOV DPTR,huiLCALL LP1LCALL DELAYMOV DPTR,hui1LCALL LP1LCALL DELAYDJNZ R6,MAINJNB 01H,$CLR 01HLJMP 9F30HORG 8400HMAIN1:LCALL LP1MOV A,DPLADD A,20HMOV DPL,ALCALL LP2LCALL DELAYRET一般顯示程序：ORG 8500HLP1:MOV R1,0MOV R0,0MOV R4,0MOV R5,16MOV P2,R4LOOP1:MOV A,R1MOVC A,A+DPTRMOVX R0,AINC R0INC R1MOV A,R0CJNE A,2,LOOP1MOV R0,0INC R4MOV P2,R4DJNZ R5,LOOP1LCALL 9F42HRETORG 8550HLP2:MOV R1,0MOV R0,2MOV R4,0MOV R5,16MOV P2,R4LOOP2:MOV A,R1MOVC A,A+DPTRMOVX R0,AINC R0INC R1MOV A,R0CJNE A,4,LOOP2MOV R0,2INC R4MOV P2,R4DJNZ R5,LOOP2LCALL 9F42HRET逐行顯示程序：ORG 8600HLP3:MOV R1,0MOV R0,2MOV R4,0MOV R5,16MOV P2,R4LOOP3:MOV A,R1MOVC A,A+DPTRMOVX R0,ALCALL 9F42HMOV DPTR,HAN2LCALL DELAYINC R0INC R1MOV A,R0CJNE A,6,LOOP3MOV R0,2INC R4MOV P2,R4DJNZ R5,LOOP3RETORG 8650HLP4:MOV R1,0MOV R0,0MOV R4,0MOV R5,16MOV P2,R4LOOP4:MOV A,R1MOVC A,A+DPTRMOVX R0,ALCALL 9F42HMOV DPTR,HAN22LCALL DELAYINC R0INC R1MOV A,R0CJNE A,8,LOOP4MOV R0,0INC R4MOV P2,R4DJNZ R5,LOOP4RET延時子程序：ORG 8700HDELAY:MOV R7,00HMOV R2,00HMOV R3,10HD1:DJNZ R7,$DJNZ R2,D1DJNZ R3,D1RET發(fā)揮部分1：用算法實現(xiàn)顯示內(nèi)容倒置的程序：ORG 8800HLCALL 9F39HLCALL 9F3CHMOV DPTR,HANLCALL LP1LCALL DELAYLCALL LPPJNB 01H,$CLR 01HLJMP 9F30HORG 8850HLPP:MOV DPTR,HANLP5:MOV R1,0MOV R0,0MOV R4,16MOV R5,16MOV P2,R4LOOP5:MOV A,R1MOVC A,A+DPTRMOVX R0,AINC R0INC R1MOV A,R0CJNE A,2,LOOP5MOV R0,0DEC R4MOV P2,R4DJNZ R5,LOOP5LCALL 9F42HRET發(fā)揮部分2：用算法實現(xiàn)顯示內(nèi)容左右翻轉(zhuǎn)的程序：ORG 9000HLCALL 9F39HLCALL 9F3CHMOV DPTR,HANLCALL LP1LCALL DELAYLCALL LPP1JNB 01H,$CLR 01HLJMP 9F30HORG 9050HLPP1:MOV DPTR,HANLP6:MOV R1,0MOV R0,0MOV R4,0MOV R5,16MOV P2,R4MOV R3,0LOOP6:MOV A,R1MOVC A,A+DPTRMOV R2,8MOV R6,AKK:MOV A,R6RRC AMOV R6,AMOV A,R7RLC AMOV R7,ADJNZ R2,KKCJNE R3,0,KKKMOV 40H,R7INC R1INC R3SJMP LOOP6KKK:MOV A,R7MOV R3,0INC R1LCALL KKKKMOV A,40HLCALL KKKKDJNZ R5,LOOP6LCALL 9F42HRETKKKK:MOVX R0,AINC R0MOV A,R0CJNE A,2,LOP6MOV R0,0INC R4MOV P2,R4LOP6:RETEND“電信”二字的編碼：ORG 8900HHAN:DB 01H,00H,01H,00H,01H,00H,3FH,F8H,21H,08H,21H,08H,3FH,F8H,21H,08HDB 21H,08H,21H,08H,3FH,F8H,21H,08H,01H,02H,01H,02H,00H,FEH,00H,00HDB 08H,80H,0CH,60H,18H,40H,17H,FEH,30H,00H,33H,F8H,50H,00H,93H,F8HDB 10H,00H,13H,F8H,12H,08H,12H,08H,12H,08H,13H,F8H,12H,08H,00H,00H“電信”二字左旋90度后的編碼：ORG 8A00HZX:DB 00H,00H,00H,0EH,00H,02H,1FH,F2H,12H,22H,12H,22H,12H,22H,12H,22HDB FFH,FCH,12H,20H,12H,20H,12H,20H,12H,20H,1FH,F0H,00H,00H,00H,00HDB 00H,00H,10H,00H,10H,00H,15H,7EH,15H,44H,55H,44H,75H,44H,95H,44HDB 15H,44H,15H,7EH,50H,00H,E0H,00H,3FH,FEH,0CH,00H,02H,00H,01H,00H“電信”二字右旋90度后的編碼：ORG 8B00HYX:DB 00H,00H,00H