EEPW论坛

就算是很简单的汇编程序，下载到mcu上后，运行起来会说： communications timeout, pls restart E8.

为什么？


简单程序如下：
;****************************************************
;*                Definition of ROM                 *
;****************************************************

VRAMTOP   .EQU           0400H                    ; Setting the starting point of the RAM
VROMTOP   .EQU           0F0000H                  ; Setting the starting point of the ROM
VSB       .EQU           0400H                    ; Setting the starting point of the SB
P0        .EQU           03E0H                    ; Setting p0 register
PD0       .EQU           03E2H                    ; Setting p0 direction register

;****************************************************
;*       P0----- LED lighting output                *
;*                   P0_0-------LED1                *  
;*                   P0_1-------LED2                *
;*                   P0_2-------LED3                *
;*                   P0_3-------LED4                *
;*                   P0_4-------LED5                *
;*                   P0_5-------LED6                *
;*                   P0_6-------LED7                *
;*                   P0_7-------LED8                *
;****************************************************

          .SECTION       PROGRAM,  CODE          
          .ORG           VROMTOP                  ; This program will store from the VROMTOP
SETING:
          MOV.B          #0FFH,    PD0            ; P0 are the output pins

          MOV.B          #081H,    P0

         
          .END





build的时候只有这个a30文件，没有其他任何文件

请高手解决