org 0000h
           swwc:mov r5,#10
                mov 20h,#00
           swwb:mov r4,#100
           swwa:lcall main
                djnz r4,swwa
                mov a,20h
                add a,#08
                mov 20h,a
                djnz r5,swwb
                ajmp swwc                这是主程序，控制循环次数，下面的是每次循环显示的内容
                ret
         main:mov r1,20h      
              mov r3,#08h     
              mov r2,#0feh
          gn1:mov p2,#0ffh
              mov dptr,#tab
              mov a,r1         
              movc a,@a+dptr  
              mov p0,a         
              inc r1           
              mov a,r2         
              mov p2,a
              lcall delay
              rl a              
              mov r2,a
              djnz r3,gn1                     
              ret
        delay:push 04h
              push 05h
              mov r4,#14h
         loop:mov r5,#18h
              djnz r5,$
              djnz r4,loop
              pop 05h
              pop 04h
              ret
         TAB: DB  00H,3CH,42H,81H,81H,42H,3CH,00H
              DB  00h,00h,00h,21h,7fh,01h,00h,00h
              DB  00H,00h,27h,45h,45h,45h,39h,00h
              DB  00h,00h,22h,49h,49h,49h,36h,00h
              DB  00H,04h,0ch,14h,24h,7fh,04h,00h
              DB  00h,00h,72h,51h,51h,51h,4eh,00h
              DB  00H,00h,3eh,49h,49h,49h,26h,00h
              DB  00H,00h,40h,40h,40h,4fh,70h,00h
              DB  00H,00h,36h,49h,49h,49h,36h,00h
              DB  00H,00h,32h,49h,49h,49h,3eh,00h
              end
我就是不知道怎么在主程序里加一些东西，让他能用点阵显示器轮流滚动显示数字0-9,而且所有数字采用渐渐移出显示器方式
谢谢大神，跪求大神了，    学知识不容易啊