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'[PIC]:Java PICmicro MCU Development Tools'
2001\03\01@134445 by jamesnewton

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source= http://www.piclist.com/postbot.asp?id=piclist\2001\03\01\114131a

No, XPL0 is not UCSD byte code Pascal.

XPL0 is GPL'd


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2001\03\01@162100 by david.clavey

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There's a very interesting JVM for 68HC11 at this Web page, comes complete
with source code in "C"

http://www.rtjcom.com/home.html

I am currently looking at porting it (with simplifications) to a PIC16F877.
The JVM would fit in the Microcontroller itself, but the Java Bytecode
source would have to reside in a large external flash chip.

But then on the other hand why bother, when you can get a 8051 based
Microcontroller (TINI) with excellent IO (Ethernet card, two RS232, two
CAN)complete with JVM for $55 from Dallas Semi.

http://www.ibutton.com/TINI/

David Clavey

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2001\03\01@222344 by myke predko

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Thanx to everybody who replied/put their two cents in.

My initial response would have been similar to the general consensus that
ALL of the PICmicro microcontroller architectures do not have the resources
to run the Java mV.

I asked because I still have the original Sun Java documents which claimed
that Java would become the premier language for ALL processors and it named
low-end MCUs as one of its biggest target markets.

David, thanx for the pointers to the HC11 and 8051 devices.

myke
{Original Message removed}

2001\03\02@005008 by Bill Westfield

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   I asked because I still have the original Sun Java documents which
   claimed that Java would become the premier language for ALL processors
   and it named low-end MCUs as one of its biggest target markets.

Ahh, but...

1) Sun's idea of a "low-end MCU" is probably much different than
  Microchip's idea of a "low-end MCU."

2) They may not have meant EXISTING low-end MCUs, but rather that it
  might be possible to build low-end MCUs with native java capability.

3) In particular, I'll bet they mean something von-neuman with at least
  64k of address space.

4) They almost surely mean that they believe that people will choose a
  java-architecture micro over a non-java architecture micro, price
  being "similar."  If this were true, no one would be using PICs today,
  given that there are similarly priced CPUs with much nicer
  architectures.  (ie "architecture isn't everything, or we'd still be
  using DEC-20s, PDP-11s, and LISP machines.")

BillW

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2001\03\02@090647 by Olin Lathrop

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> I asked because I still have the original Sun Java documents which claimed
> that Java would become the premier language for ALL processors and it
named
> low-end MCUs as one of its biggest target markets.

You can't expect marketing to let reality to spoil a good story.


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Olin Lathrop, embedded systems consultant in Devens Massachusetts
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