; AT89C2051 风扇定时阵风控制器源程序(三位数)显示OK！！ ; p3.2=阵风设置开关 ; 硬件:P3.0=-1 键、P3.1=功能键、P3.5=个位显示、 ; P3.4=十位显示、P3.3=百位显示、P3.7=输出端 org 0000h ajmp main nop org 01bh ajmp dszd ljmp 0000h nop nop ajmp 0000h org 30h main: mov 40h,#00h mov 41h,#00h mov 42h,#00h ;个位显示数据 mov 43h,#00h ;十位显示数据 mov 44h,#06h ;佰位显示数据 mov 45h,#00h mov 46h,#00h mov 4ah,#09h mov 4bh,#09h mov 4ch,#09h mov r5,#00h nca equ 48h setb p3.0 setb p3.1 setb p3.2 mov sp,#50h mov tmod,#10h mov ie,#88h mov tl1,#37h mov th1,#70h setb tr1 clr p3.7 clr nca nop nop disp:;动态显示 mov dptr,#tab clr p3.4 clr p3.3 mov a,42h movc a,@a+dptr anl p1,#01h orl p1,a jb nca,xsz1 setb p3.5 lcall ms10 acall key clr p3.5 clr p3.3 mov a,43h movc a,@a+dptr anl p1,#01h orl p1,a jb nca,xsz2 setb p3.4 lcall ms10 acall key clr p3.5 clr p3.4 mov a,44h movc a,@a+dptr anl p1,#01h orl p1,a jb nca,xsz3 setb p3.3 lcall ms10 ajmp disp nop nop ajmp disp xsz1: cjne r5,#01h,xsz2 xsa: clr p3.4 clr p3.3 mov a,42h movc a,@a+dptr anl p1,#01h orl p1,a setb p3.5 acall ms10 acall key xsz2: cjne r5,#02h,xsz3 xsb: clr p3.5 clr p3.3 mov a,43h movc a,@a+dptr anl p1,#01h orl p1,a setb p3.4 acall ms10 acall key xsz3: cjne r5,#03h,disp xsc: clr p3.5 clr p3.4 mov a,44h movc a,@a+dptr anl p1,#01h orl p1,a setb p3.3 acall ms10 acall key ajmp disp nop nop ajmp disp dszd:;定时计数中断子程序 clr tr1 setb rs0 push psw push acc mov tl1,#37h mov th1,#70h setb tr1 inc 40h mov r0,40h cjne r0,#8,tim mov 40h,#00h cpl p1.0 jb p3.2,zf0 inc 46h mov r6,46h cjne r6,#30h,t11 cpl p3.7 mov 46h,#00h ajmp t11 zf0: clr p3.7 t11: inc 41h mov r0,41h cjne r0,#60,tim mov 41h,#00h mov r0,42h cjne r0,#00,tia ajmp tib tia: dec 42h ajmp tim tib: mov r1,4...
