IMPORT __main
LDR R0, =__main
BX R0
IF . >= 0x1fc
INFO 1,"\nThe data at 0x000001fc must be 0x87654321.\nPlease delete some source before this line."
ENDIF
WHILE . < 0x1fc
NOP
WEND
; DCD 0x00 /*0x87654321 ;When the Data is 为0x87654321,user code be protected. 当此数为0x87654321时,用户程序被保护 */