按照msdn学写一个bootloader，startup.s文件如下：
startup.s--------------------------------------------------  
  
OPT   2             ; Disable listing  
  
INCLUDE kxarm.h     ; This defines the WinCE/ARM Calling Sequence  
  
Specification  
  
OPT   1             ; Reenable listing  
  
OPT   128           ; Disable listing of macro expansions  
  
STARTUPTEXT  
  
LEAF_ENTRY StartUp  
  
NOP               ; *** This routine will be filled in later ***  
  
END  

build之后出现如下错误：
BUILD: [01:0000000026:ERRORE] E:\WINCE600\PLATFORM\MyPlatform\Src\Bootloader\Ebo
ot\startup.s(1) : error A0051: unknown opcode: 2
BUILD: [01:0000000028:ERRORE] E:\WINCE600\PLATFORM\MyPlatform\Src\Bootloader\Ebo
ot\startup.s(3) : error A0051: unknown opcode: kxarm
BUILD: [01:0000000030:ERRORE] E:\WINCE600\PLATFORM\MyPlatform\Src\Bootloader\Ebo
ot\startup.s(5) : error A0051: unknown opcode: 1
BUILD: [01:0000000032:ERRORE] E:\WINCE600\PLATFORM\MyPlatform\Src\Bootloader\Ebo
ot\startup.s(7) : error A0051: unknown opcode: 128
BUILD: [01:0000000034:ERRORE] E:\WINCE600\PLATFORM\MyPlatform\Src\Bootloader\Ebo
ot\startup.s(13) : error A0051: unknown opcode: StartUp
BUILD: [01:0000000036:WARNN ] E:\WINCE600\PLATFORM\MyPlatform\Src\Bootloader\Ebo
ot\startup.s(18) warning : A0063: missing END directive
请大家指教啊