>>>>> "°íÀç¿ë" == °íÀç¿ë writes: °íÀç¿ë> Hi All! I am porting eCos on our target which is simmilar °íÀç¿ë> with CMA230. Now, I am working with ecos-1.3.1 (net-release, °íÀç¿ë> 27-03-2000). I was building and testing GDB stubs ROM. You should use the CVS tree instead. 1.3.1 is way old now. °íÀç¿ë> Downloading is OK, but RAM application is not executed. CPU °íÀç¿ë> core of our target is ARM7 and support FIQ. But IRQ is not °íÀç¿ë> supported. Is there anything to change in HAL for FIQ ? Yes. I can't tell you what off hand though. But I'm sure you'll need to change some things. °íÀç¿ë> While downloading, Is GDB Stub ROM operated by polled or °íÀç¿ë> interrupt ? Thanks a lot ! Polled mode only. Jesper