PIC單片機(jī)將2個(gè)16進(jìn)制數(shù)轉(zhuǎn)換為5位十進(jìn)制數(shù)并顯示

W_TEMP  EQU 20H ; 實(shí)際上20H、A0H、120H和1A0HSTATUS_TEMP EQU 21H ;在體0中建立保護(hù)單元 PCLATH_TEMP EQU 22H ;在體0中建立保護(hù)單元ORG  000HGOTO A1ORG  004H;定時(shí)中斷入口地址 GOTO ZD01;ORG  0CHA1  MOVLW 1;位1顯示數(shù)MOVWF 5AH; MOVLW 2;位2顯示數(shù)MOVWF 5BH;MOVLW 3;位3顯示數(shù)MOVWF 5CH;MOVLW 4;位4顯示數(shù)MOVWF 5DH;MOVLW 4;顯示位數(shù)MOVWF 40H;MOVLW B00000001;位碼MOVWF 41H;MOVLW 5AH;MOVWF FSR ;間接尋址BSF  STATUS,RP0;選擇體1BCF  STATUS,RP1;MOVLW 00H;1:2TMRO比例MOVWF OPTION_REG;分頻1/2BCF  STATUS,RP0;體0BCF  STATUS,RP1;MOVLW 0FFH;MOVFW TMR0;初值BCF  INTCON,T0IF;清定時(shí)中斷標(biāo)志BSF  INTCON,T0IE;開(kāi)定時(shí)中斷BSF  INTCON,GIE;開(kāi)總中斷A2   CALL CL0;將16進(jìn)制數(shù)調(diào)整為5位10進(jìn)制數(shù)NOP;NOP;MOVFW  50HMOVWF  5AHMOVFW  51HMOVWF  5BHMOVFW  52HMOVWF  5CHMOVFW  53HMOVWF  5DHGOTO  A2CL0  ; MOVLW  0H ;要顯示16進(jìn)制數(shù)低位; MOVWF  50H;; MOVLW  00H;; MOVWF  51H;要顯示16進(jìn)制數(shù)高位CALL  CL1MOVLW  B00001111ANDWF  54H,0MOVWF  50HMOVLW  B11110000ANDWF  54H,1SWAPF  54H,0MOVWF  51HMOVFW  52HMOVWF  54HMOVLW  B00001111ANDWF  53H,0MOVWF  52HMOVLW  B11110000ANDWF  53H,1SWAPF  53H,1RETURNCL1  MOVLW  0;MOVWF  52H;萬(wàn)位MOVWF  53H;百千位MOVWF  54H;個(gè)十位MOVWF  55H;進(jìn)位標(biāo)志MOVLW  10H;MOVWF  56H;循環(huán)次數(shù)CLRF  57H;CL2   BCF   STATUS,C;清CRLF   51H,1;循環(huán)左移RLF   50H,1;循環(huán)左移BTFSC  STATUS,C;判斷C位是否為高BSF   55H,0;是置1MOVFW  54H;ADDWF  55H,0;PIC沒(méi)有ADDC指令只能判斷C來(lái)加1ADDWF  54H,0;與自身相加BTFSC  STATUS,C;判斷是否有進(jìn)位BSF   57H,7;有則置標(biāo)志BTFSC  STATUS,DC;判斷是否有進(jìn)位BSF   57H,3;有則置標(biāo)志CALL  DA1;調(diào)用十進(jìn)制調(diào)整子程序MOVWF  54H;存回54HCLRF  55H;清進(jìn)位標(biāo)志BTFSC  STATUS,C;判斷C位是否為高BSF   55H,0;是置1MOVFW  53H;ADDWF  55H,0;PIC沒(méi)有ADDC指令只能判斷C來(lái)加1ADDWF  53H,0;與自身相加BTFSC  STATUS,C;BSF   57H,6;BTFSC  STATUS,DC;判斷是否有進(jìn)位BSF   57H,2;有則置標(biāo)志CALL  DA1;MOVWF  53H;CLRF  55H ;BTFSC  STATUS,C;BSF   55H,0;MOVFW  52H;ADDWF  55H,0;ADDWF  52H,0;BTFSC  STATUS,C;BSF   57H,5;BTFSC  STATUS,C;判斷是否有進(jìn)位BSF   57H,1;有則置標(biāo)志CALL  DA1;MOVWF  52H;CLRF  55H;BTFSS  57H,7;判斷標(biāo)志是否有進(jìn)位GOTO  CL03;否INCF  53H,1;是進(jìn)位MOVLW  60H;ADDWF  54H,1;自身加60H CL03  BTFSS  57H,3;判斷標(biāo)志是否有進(jìn)位GOTO  CL3;否MOVLW  6H;ADDWF  54H,1;自身加6H CL3   BTFSS  57H,6;判斷標(biāo)志是否有進(jìn)位GOTO  CL04;INCF  52H,1;是進(jìn)位MOVLW  60H;ADDWF  53H,1;自身加60H CL04  BTFSS  57H,2;判斷標(biāo)志是否有進(jìn)位GOTO  CL4;否MOVLW  6H;ADDWF  53H,1;自身加6H  CL4   BTFSS  57H,5;判斷標(biāo)志是否有進(jìn)位GOTO  CL05;INCF  51H,1;是進(jìn)位MOVLW  60H;ADDWF  52H,1;自身加60H CL05  BTFSS  57H,1;判斷標(biāo)志是否有進(jìn)位GOTO  CL5;否MOVLW  6H;ADDWF  52H,1;自身加6HCL5   CLRF  57H;清標(biāo)志DECFSZ  56H,1;GOTO  CL2;RETURN;
				
            

				
					
					
				
			
                
			
							

                
			            

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