【正文】 程序清單T6963C: SJMP PR5PR5: MOV R203HMOV R3,00HMOV R4,24H ；設(shè)置地址指令A(yù)CALL PR1MOV R4,0B0H ；自動寫指令A(yù)CALL PR12MOV R2,1FH ；循環(huán)量為8K字節(jié)PR31: MOV R3,0FFHPR32: ACALL PR30CLR AACALL PR14 ；寫00HDJNZ R3,PR32DJNZ R2,PR31MOV R4,0B2H ；自動寫結(jié)束指令PR4: LCALL PR3MOV R2,00H ；設(shè)置文本區(qū)MOV R3,00HMOV R4,00HACALL PR1MOV R2,00H ；設(shè)置圖形區(qū)MOV R3,08HMOV R4,42HACALL PR1MOV R2,10H ；一行顯示16字節(jié)MOV R3,00HMOV R4,43HACALL PR1MOV R4,80H ；設(shè)置顯示方式ACALL PR12MOV R4,94H ；開顯示ACALL PR12PR6: CJNE R1,01H,PRA ；判別顯示信息SJMP PR7CJNE R1,02H,PRBSJMP PR7CJNE R1,03,PRCPR7: MOV R4,0C0H ；寫數(shù)據(jù)，地址加1ACALL PR11,R3 ；在調(diào)用程序之前已定，存放代碼INC R3INC R3ACALL PR11DEC R3MOV R2,03HMOV R4,0CIH ；讀數(shù)據(jù)，地址加1PR61: ACALL PR12DJNZ R2,PR61 ；地址指針移近反字左下角MOV R4,0C0HACALL PR11INC R3INC R3ACALL PR11RET 打印子程序及框圖該子程序?qū)⒉僮髌敝械某?shù)符號、標(biāo)記、草書等不變的字符存放在EPROM中，需打印的數(shù)據(jù)放在RAM里，當(dāng)調(diào)用打印程序時，將對應(yīng)常數(shù)后邊打印機(jī)RAM中的數(shù)據(jù)，地址指針自動加1，自動打印完畢 打印字程序框圖程序清單ORG 0B00HBO1H PRONT: MOV OPRT,7FFFH 。（程序框圖鍵附錄B）程序清單：INT1: PUSH A ；堆棧保護(hù)PUSH PSWPUSH DPLPUSH DPHSTART MOV R1,00H ；清零內(nèi)存MOV R1,00HINC RCJNE R,0FFH,STARTLCALL LOOPJ ；調(diào)用開關(guān)量狀態(tài)子程序MOV R2,00H ；28155初始化，給PC口置0MOV DPTR,3F00HMOVX DPTR,AFCLEAR: MOV R3,00H ；清零標(biāo)志位MOV R4,00HRSCAN: MOV DPTR,3F03HMOV 0FCH ；給C口置FCHMOVX DPTR,3F03HCJNE A,0FFH,LOOP1 ；是否有鍵按下SJMP FCLEARLOOP1: CJNE R3,01H,LOOP2 ；是否經(jīng)過削抖電路SJMP LOOP3LOOP2: LCALL IT0 ；調(diào)用定時器延時10MSLOOP3: CJNE R4,01H,TTT ；是否已處理SJMP RSCANTTT: MOV DPTR,3F03HMOV A,0FEH ；給C口置FEH，掃描第一行MOVX DPTR,AMOV A,DPTRCJNE A,0FFH,LOOP4MOV DPTR,3F01H ；掃描第二行MOV A,0FDHMOVX DPTR,AMOV DPTR,3F01HMOV A,DPTRCJNE A,0FFH,LOOP5 LOOP4: CJNE A,7FH,LOOP8 ；判斷按下鍵值MOV A,00HSJMP LOOP22LOOP5: CJNE A,7FH,LOOP15 ；判斷第二行值MOV A,00HSJMP LOOP22LOOP6: MOV R3,01H ；標(biāo)志位置位MOV R2,01HCJNE R7,10H,RSCANLOOP7: POP PSWPOP APOP DPLPOP DPHDETI ；返回主程序LOOP8: CJNE A,0BFH,LOOP9MOV A,01HSJMP LOOP22LOOP9: CJNE A,0DFH,LOOP10MOV A,02HSJMP LOOP22LOOP10: CJNE A,0EFH,LOOP11MOV A,03HSJMP LOOP22LOOP11: CJNE A,0F7H,LOOP12MOV A,04HSJMP LOOP22LOOP12: CJNE A,0FBH,LOOP13MOV A,05HSJMP LOOP22LOOP13: CJNE A,0FDH,LOOP14MOV A,06HSJMP LOOP22LOOP14: CJNE A,7FH,LOOP6 ；若不等則返回掃描第二行MOV A,07HSJMP LOOP22LOOP15: CJNE A,0BFH,LOOP16MOV A,09HSJMP LOOP22LOOP16: CJNE A,0DFH,LOO17MOV A,0AHSJMP LOOP22LOOP17: CJNE A,0EFH,LOOP18MOV A,0BHSJMP LOOP22LOOP18: CJNE A,0F7H,LOOP19MOV A,0CHSJMP LOOP22LOOP19: CJNE A,0FBH,LOOP20MOV A,0DHSJMP LOOP22LOOP20: CJNE A,0FDH,LOOP21MOV A,0EHSJMP LOOP22LOOP21: CJNE A,0FEH,LOOP6 ；若無鍵按下則返回MOV A,0FHSJMP LOOP22LOOP22: CLR C ；判斷是數(shù)字鍵還是功能鍵CJNE A,0AH,LOOP23MOV A,0CHSJMP LOOP32LOOP23: NC LOOP26 ；累加數(shù)值CJNE R7,10H,LOOP24MOV R5,10HSJMP LOOP6LOOP24: SWAP AXCHD A,R5SWAP A,MOV R5,AMOV R5,AMOV R5,00HAJMP LOOP6LOOP26: CJNE A,0AH,LOOP27AJMP LOOP32LOOP27: CJNE A,0BH,LOOP28AJMP LOOP33LOOP28: CJNE A,0CH,LOOP29AJMP LOOP34LOOP29: CJNE A,0DH,LOOP30AJMP LOOP35LOOP30: CJNE A,0EH,LOOP31AJMP LOOP36LOOP31: CJNE A,0FH,LOOP37LOOP32: LCALL LOOPA ；進(jìn)入功能鍵AAJMP LOOP6 ；返回后進(jìn)行掃描狀態(tài)LOOP33: LCALL LOOPB ；調(diào)用功能鍵B中子程序AJMP LOOP6LOOP34: LCALL LOOPCAJMP LOOP6LOOP35: LCALL LOOPDAJMP LOOP6LOOP36: LCALL LOOPEAJMP LOOP6LOOP37: LCALL LOOPFAJMP LOOP6 時鐘初始化框圖及子程序該子程序[9]用于對MC146818時鐘芯片的設(shè)置，首先對控制寄存器進(jìn)行分頻器復(fù)位，再到B寄存器停止更新，再對秒、分、時數(shù)據(jù)設(shè)數(shù)[9]。如果是，則說明沒有鍵按下，返回。 自動重合閘子程序框圖程序清單：ARD: CJNE R5,01H,A41 ；R5是否等于1？MOV R1,0B3HMOV A,00HMOV R2,00HMOV R3,00HA42: MOV 90H,R1 ；讀入開關(guān)量JB ,A43 ；APDD QF123合上了嗎？MOV R2,00HADD A,R2STMP A44A43： MOV R3,01H ；合上QF123ADD A,R3RL AA44: INC R1CJNE R1,0BBH,A42A45: MOV R3,80HORL A,R3MOV DPTR,1F00HMOVX DPTR,AMOV 90H,0BAHJB ,A46 ；QF12是否合上了？STMP A45 ；若沒合上，重復(fù)合閘動作A46: MOV 3AH,01HLCALL LOOPK ；調(diào)用讀時鐘子程序LCALL T6963C ；送液晶顯示器RET ；返回 鍵盤掃描子程序及框圖用R3作削抖開關(guān)，R2作處理標(biāo)志位，由外部中斷進(jìn)入鍵盤掃描程序，給R3,R4清零，進(jìn)而給28155的PC口置0，再讀A口，是否為FFH，即是否有按鍵按下，若沒有則返回，重復(fù)上述循環(huán)過程，當(dāng)A口部為FFH時即可判出有按下，第一次按下，由于R3=0，故啟動定時器延時10MS削抖，此時由于R4位處理標(biāo)志位為0，既未處理，此時尚未知是何健按下，再給PC口置FEH，掃描第一行，判A口是否還是FFH。 自動重合閘子程序及框圖在主程序中，令R5=0，即初始化時令R5=0。程序清單：ORG 0000HMAIN: MOV R1,00H ；對工作寄存器清0MOV R2,00HMOV R3,00HMOV R4,00HACALL A1 ；調(diào)用定時器T0初始化子程序A1: MOV B8H,06H ；18155初始化MOV A8H,0FFHMOV DPTR,9F00HMOV DPTR,AA2: MOV DPTR,9F00HMOV R2,00HMOVX DPTR,AA3: MOV R,00H ；啟動轉(zhuǎn)換CLR CMOV A,R1MOV DPTR,9F30HMOVX DPTR,ALOOP1: JB ,LOOP1 ；等待轉(zhuǎn)換MOV DPTR,3F03HMOV R3,01HMOV