Thanks 4 nice reply ...
but
In case of freertos problem is ... i am using Philips 8051 ... and also it looks a bit complex for big applications
In case of salvo of pumpkin ... it is a bit expensive ...
......... actually i am looking for an RTOS of price 100$ to 200$ maximum ... and capable for mature and hard applications
.........................
options i feel are ...
UcLinux .........
PaulOS ..........
any else .................... wht u say?
options like Ucos, Ecos looks attractive in features but ... expensive
i recall we did the same search before and we ended up using ckernel , its a very tiny kernel written in C and ported to 8051. have a loot at it www.ckernel.nl