Subject:
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Re: RCX and Java
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 5 May 1999 01:33:27 GMT
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Original-From:
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John A. Donaldson <jdonaldson@ghg.+Spamcake+net>
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Viewed:
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1661 times
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Has anyone thought of porting OS9 to the RCX. OS9 is a multi-processing,
multi-tasking, pre-empted OS that can be put into ROM. It is also a 8 bit OS.
Uses Pascal, Basic, Assembly, & C for writing code. Level 1 OS9 fits perfectly
into 32K of memory with approx 24K for user programs.
John A. Donaldson
Ola Liljedahl wrote:
> Aren't robots real time systems?
> Isn't the RCX meant to be a component in such real time systems?
>
> Java (as implemented by current virtual machines) is NOT suitable
> as a platform for building real time systems. The implementation of
> garbage collection is not deterministic and may take a very long
> time to execute. You Emacs users out there should recognise the problem...
>
> We should make the distinction between real time systems and embedded
> systems. Java is fine for embedded systems with no real time requirements.
>
> In my line of business I see some Java being used in real time systems.
> But never for real time purposes, only for low priority (as regards to
> real time properties) operation and maintenance.
> --
> Ola Liljedahl
> olli@enea.se
> --
> Did you check the web site first?: http://www.crynwr.com/lego-robotics
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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Message has 1 Reply:
 | | Re: RCX and Java
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| (...) You are provoking me:-) At Enea we are thinking of porting OSE Basic to the RCX. OSE is a multi- processing, multi-tasking, pre-empted OS that can be put into ROM. OSE Basic is a version suitable for 8 or 16 bit microcontrollers with limited (...) (26 years ago, 5-May-99, to lugnet.robotics)
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Message is in Reply To:
| | RCX and Java
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| Aren't robots real time systems? Isn't the RCX meant to be a component in such real time systems? Java (as implemented by current virtual machines) is NOT suitable as a platform for building real time systems. The implementation of garbage (...) (26 years ago, 4-May-99, to lugnet.robotics)
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