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Re: Port of eCos to 8051 uController?


On Thu, 12 Jun 2003, Grant Edwards wrote:

> On Thu, Jun 12, 2003 at 09:08:09AM +0200, Andrew Lunn wrote:
> 
> > > I checked all the lists I could find, and didn't see any
> > > successful ports to the 8051 uController. Does anyone know of
> > > one, either finished or in progress?
> 
> > I suggest you do some more digging on the list archives
> > 
> > 1) The question about 8-bit processors has come up before. eCos does
> >    not currently support such devices and its considered not trivial
> >    to make it run on 8bit machines
> 
> And the 8051 is a particular bad one. It doesn't even have a
> proper stack pointer.  I've written a couple simple kernels for
> 8-bitters like the HC11, and porting something as simple as
> those to the 8051 wouldn't have been easy.  Porting something
> like eCos to 8051 is, IMO, a practical impossibility.

Another problem is that ecos has a ton of C++. You mention SDCC has a 
possible compiler; however it only supports C. I'm not aware of a C++ 8051 
compiler. 

Scott


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