On Fri, Jun 12, 2009 at 3:27 AM, Xiaofan Chen wrote: > What kind of real-time performance you need? Why do you think > you need QNX and not other smaller RTOS (uCOS-II, FreeRTOS, > ThreadX, eCOS, etc)? You have a point there. FreeRTOS is the only one out of those which I'll consider. > Even the chips which can run uCLinux are not small. At least > none of the current Microchip MCUs can run uCLinux. True, but ARM7 can run ucLinux and those are relatively small (64 TQFP). Cortex M3 can also run Linux and I think a certain company makes DIP sized cortex M3. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist