 | | RCX and Java —Ola Liljedahl
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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 (...) (25 years ago, 4-May-99, to lugnet.robotics)
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| | | | | Re: RCX and Java —John A. Tamplin
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| | | | | (...) I doubt anyone is considering using the RCX with any OS/language in a hard real-time system. The original firmware nor any of the replacements make the proper guarantees required for such a system (ie, a deadline-based scheduler), and I have (...) (25 years ago, 4-May-99, to lugnet.robotics)
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| | | | | Re: RCX and Java —John A. Donaldson
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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 (...) (25 years ago, 5-May-99, to lugnet.robotics)
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| | | | | | | Re: RCX and Java —Ola Liljedahl
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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 (...) (25 years ago, 5-May-99, to lugnet.robotics)
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| | | | | | | | Re: RCX and Java —John A. Donaldson
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| | | | | | I gather then, you know what OS9 is. I have been using OS9 Level I & II, OS9-68K and OS9-X86 for over 10 years. Sound like OSE is very much like OS9. OS9 was developed by Microware for embedded comtrolers like the H8. JAD (...) (25 years ago, 5-May-99, to lugnet.robotics)
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| | | | | Re: RCX and Java —Søren Hilmer
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| | | | (...) FYI I have been involved in two (big) projects using java for controlling industrial production one is used to control high speed sorting systems the other for controlling packing of newspapers comming directly from the rotation press. And yes (...) (25 years ago, 5-May-99, to lugnet.robotics)
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| | | | | | Re: RCX and Java —Ola Liljedahl
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| | | | (...) When making a GSM call setup the latency for the call going into a base station/base station controller and out into the next in the chain is 20ms. If you fail you break the GSM specification. How are you going to guarantee that with Java? (...) (25 years ago, 5-May-99, to lugnet.robotics)
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| | | | | | Re: RCX and Java —John A. Tamplin
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| | | | | (...) I don't think anyone is suggesting that Java is appropriate for a hard-realtime system. Personally, I would expect nothing less than an RTOS with a deadline-based scheduler and a low-level language. However, I think the RCX does not have any (...) (25 years ago, 5-May-99, to lugnet.robotics)
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| | | | | | Re: RCX and Java —Søren Hilmer
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| | | | (...) rotation (...) No, java was picked because the company did not wan't to use C++ as it had some bad experience with projects taking way too long to complete. It had used Visual basic (yieek) before but it tended to be slow and the code was not (...) (25 years ago, 10-May-99, to lugnet.robotics)
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