keil中“syntax error”“illegal character”怎么改？

汇编程序 错误在第6行ORG 0000H AJMP START ORG 0030HSTART: MOV P1 , #0FFH　 MOV P0 , #0FFH　　　 SETB P2. 3L1 : 　MOV A , P1 　 CJNE A,#0FFH ,L2 　 AJMP L1 L2 : 　 ACALL DELAY CLR P2.3 L3 : JNB P1.0,N1 JNB P1.1,N2 JNB P1.2,N3 JNB P1.3,N4 JNB P1.4,N5 JNB P1.5,N6 JNB P1.6,N7 JNB P1.7,N8 N1 : MOV A,#0COH MOV P0,A AJMP EXITN2 : MOV A,#0F9H MOV P0,A AJMP EXITN3 : MOV A,#0A4H MOV P0,A AJMP EXITN4 : MOV A,#0B0H MOV P0,A AJMP EXITN5 : MOV A,#99H MOV P0,A AJMP EXITN6 : MOV A,#92H MOV P0,A AJMP EXITN7 : MOV A,#82H MOV P0,A AJMP EXITN8 : MOV A,#0F8H MOV P0,A AJMP EXITDELAY: MOV R0,#0FH DL2: MOV R1,#7DH DL1: NOP NOP DJNZ R1,DL1 DJNZ R0,DL2 RETEXIT: END