Hello all,
I am starting fresh in the embedded systems field with a background in 8051 assembly and C programming. I went thru some earlier posts on similar subjects. I've also read the application note from philips's website about uC/OS on Philips XA.

Well, my question here is, can a RTOS be built on a basic 8051 with 4kB or more code memory and 128 bit or some more RAM? i don't think it is possible. but is it that we must have some 16 bit processor like the XA?

Second question is whether building an RTOS is better or working on some standard available RTOS? what do the professionals in this field do? As a good career future, what should be a better option?

Any more information or link to study the RTOS or embedded systems subject will be welcome.

Thanks to all........