dot_led.asm

来自「学习单片机一个简单程序和硬件的开发」· 汇编 代码 · 共 33 行

                  ORG 0000H
                   MOV SCON,#00H
               START:MOV R1,#00H
                   MOV R2,#00H
                   MOV R3,#8
                   MOV DPTR, #TABLE
               E1: MOV  A,R1
                   MOVC A,@A+DPTR
                   MOV SBUF,A;
                   JNB  TI,$
                   CLR TI
                   SETB P2.1
                   MOV A,R2;
                   MOV P1,A;
                   CLR P2.0
                   NOP
                   NOP
                   SETB P2.0
                   CLR P2.1
                   INC R1
                   INC R2
                   MOV R4,#250
                   DJNZ R4,$;
                   DJNZ R3,E1
                   AJMP START
              TABLE:DB 10H,20H,40H,0FFH,40H,20H,10H,00H;
                     END