今天在调试NIOS II的时候，不小心出现了如下错误：
Downloading 00000020 ( 0%)
Downloading 00801000 (25%)
Downloaded 2KB in 0.0s
Verifying 00000020 ( 0%)
Verify failed between address 0x20 and 0x147
Leaving target processor paused
2010-10-4 14:38:09 - (严重) elf2flash: Boot copier overlaps data in flash
2010-10-4 14:38:09 - (严重) elf2flash: Error generating Flash file, exiting
make: *** [cfi_flash.flash] Error 5
折腾了半天，原来发现是搞错了，因为用了CFI，在NIOSII处理器的Exception Vector那里设置成了cfi_flash了，改正后OK
