mono and .NET Compact Framework (was: Re: [Mono-list] CLI and devices)
Wed, 5 Jun 2002 23:50:44 +0200
On Wednesday 05 June 2002 06:12 pm, Bob Smith wrote:
> How about for PalmOS? I have an 8mb Visor. Think it could be squeezed in?
Should be possible - I don't think Compact .NET supports Palm, but it should
fit in 8 MB. For comparison's sake, the J2ME (sorry, J2EE was a typo -- it
comes from Micro Edition) Palm MIDP (Mobile Independent Device Profile..
those people at Sun loves acronyms, hey? :)) is about 1 MB, got it running on
my 8 MB Palm.
The approach the Java guys have taken (already mentioned briefly by other
people) is to write a very optimized JVM for those tiny machines, probably in
C for easier portability. In order to reduce its complexity, the bytecode is
simplified (reduced instruction set), and also it comes somewhat
pre-processed, some of the tasks that the JVM normally does are handled at
compile-time (don't remember exactly what). Further, most of the class
libraries are stripped down and you get a very special abstract windowing
toolkit that is just an interface to the vendor-supplied implementation, so
that you get an adequate GUI whether you run it on a cell phone display, or
your home TV. Probably looking at the way Compact .NET is implemented would
bring more ideas.
So to answer your question, yes it is possible to get it there, but it _is_ a
lot of work.