what Hardware do i use?

Hi
I need to use an Embedded OS and i dont know what processors to use for
running an OS. I've got a look over intel 8051 but it seems to me
pretty low in resources. I need a processor or Microcontroller with
rich memmory; i mean it should have or support large ROM for code space
and have great amout of RAM as i plan to run processes on my system.
Can some1 help me?
Bye

Ahmed wrote:

> Hi
> I need to use an Embedded OS and i dont know what processors to use for
> running an OS. I've got a look over intel 8051 but it seems to me
> pretty low in resources. I need a processor or Microcontroller with
> rich memmory; i mean it should have or support large ROM for code space
> and have great amout of RAM as i plan to run processes on my system.
> Can some1 help me?
> Bye
> 
Wow.  That's almost the most backward way of asking a question I can 
think of.  It's like saying I have some yellow paint and I don't know 
what I should build to paint yellow.  Note that I haven't said how much 
paint, what kind of paint, what shade of yellow -- or what I need to do 
with my yellow-painted thing when I'm done.

There are a bunch of "embedded" operating systems out there -- including 
ones that run just dandy on an 8051.  If you know what "embedded" OS you 
are using and why, how many resources your OS will use and how many your 
application will, then that should guide your choice of processor.

I would suggest you look on the Electronic Design website and others of 
its ilk.  Look for a microcontroller roundup -- that's often the 
quickest way to match your memory, speed and peripheral requirements 
against some actual microcontrollers.

If you can't find a good guide there, here's what I'd do:

* Estimate the amount of memory you need.  You seem to have some idea if 
you know that an 8051 is insufficient.

* Estimate the processor speed you need.

* List all of the peripherals you will need.

Go look on the web sites of all the microcontroller manufacturers you 
know of, and find the best match.

Without _way_ more detail on your part no one is going to be able to 
answer you in more detail than I've given.

-- 

Tim Wescott
Wescott Design Services
http://www.wescottdesign.com

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