It seems to me that my problem can not be solved by hexmate
and some other methods here. There are indeed some overlapping
of the hex file.

Looks like Daniel's method is easier now. I will try 
Jose Da Silva program as well.

C:\Myprog\Hitech\hexmatev176>hexmate boot.hex demo.hex -Ofsusb.hex
(944) data conflict at address 0h between boot.hex and demo.hex

Regards,
Xiaofan

-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist