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Groups > comp.lang.java.programmer > #32702

Re: questions re Javascript

From Martin Gregorie <martin@address-in-sig.invalid>
Newsgroups comp.lang.java.programmer
Subject Re: questions re Javascript
Date 2015-09-25 17:32 +0000
Organization A noiseless patient Spider
Message-ID <mu40g2$fq4$2@dont-email.me> (permalink)
References (5 earlier) <mu22d4$scg$2@dont-email.me> <mu25ld$cn$1@dont-email.me> <mu25v8$6dd$1@dont-email.me> <mu3afq$sn3$1@dont-email.me> <mu3k10$dep$3@dont-email.me>

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On Fri, 25 Sep 2015 10:02:01 -0400, Jerry Stuckle wrote:

> On 9/25/2015 7:17 AM, Martin Gregorie wrote:
>> On Thu, 24 Sep 2015 20:55:59 -0400, Jerry Stuckle wrote:
>> 
>>> Again - let's see you build the hardware.  Then maybe we can discuss
>>> it.
>>>
>> Its already been done. https://en.wikipedia.org/wiki/Java_processor
>> 
>> Or, just find a Jazelle chip or Javelin device and use that. Parallax
>> sold the Javelin. Physically they were very similar to their BS2 STAMP.
>> However, they did that quite a while back, so it will be Java 1 or 2 at
>> the most.
>> 
>> There's an interesting discussion in this reference: http://
>> www.jopdesign.com/doc/jhal.pdf I just skimmed it, but it looks as
>> though they've had at least one HW implementation running.
>> 
>> In any case, what does seeing a hardware implementation have to do with
>> a thread about clarifying natural language definitions and their
>> associated semantics?
>> 
>> 
>> 
> That's fine.  If the .class file runs natively on that chip, then I
> would consider it not being interpreted *on that chip*.
> 
> The question here is, though.  Are these chips native java, or
> emulators?  I haven't looked at them.

To the best of my knowledge the Javelin chip ran native Java, though it 
seemed to be somewhat feature-poor. I never got one, though I considered 
it, because it was a lot more pricey than the BS2 devices, but both 
Javelin and BS2 seemed to use very similar support software and physical 
set-ups. 

I did a fair amount with the BS2, though. Physically these are a tiny PCB 
carrying surface-mount chips and with 24 pins round the edges so it fit 
in a 24 pin DIL socket. The chips are a PIC processor executing BASIC run-
time firmware, 2KB of EEPROM, and 32 bytes(!) of RAM. To program it you 
run an IDE on a Windows box which lets you edit and compile a real-time 
integer BASIC and load it into the BS2 over a serial link. Issuing a RUN 
command from the IDE or (with it disconnected) powering on the BS2 caused 
it to execute the BASIC program you'd previously loaded. There's no 
documentation for the compiler output, so I don't know whether the 
compiler emits PIC instructions or P-code: either way it manages to fit 
500 Integer BASIC instructions into 2KB of EEPROM The runtime lets you 
treat its 8 i/o pins as digital or serial lines. No interrupts, though.

All the Javelin docs have now vanished from the website, but IIRC its 
capabilities were similar - its just that you programmed it in 'integer 
Java' rather than integer BASIC.


-- 
martin@   | Martin Gregorie
gregorie. | Essex, UK
org       |

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Thread

questions re Javascript rdelaney2001@gmail.com - 2015-09-01 15:26 -0700
  Re: questions re Javascript Martin Gregorie <martin@address-in-sig.invalid> - 2015-09-01 23:26 +0000
    Re: questions re Javascript Eternal Hope <laughingspam99@gmail.com> - 2015-09-02 10:00 +0100
      Re: questions re Javascript e.d.programmer@gmail.com - 2015-09-02 05:32 -0700
        Re: questions re Javascript Arne Vajhøj <arne@vajhoej.dk> - 2015-09-03 20:17 -0400
          Re: questions re Javascript e.d.programmer@gmail.com - 2015-09-04 05:33 -0700
            Re: questions re Javascript Arne Vajhøj <arne@vajhoej.dk> - 2015-10-05 22:42 -0400
  Re: questions re Javascript Arne Vajhøj <arne@vajhoej.dk> - 2015-09-01 20:00 -0400
  Re: questions re Javascript Eternal Hope <laughingspam99@gmail.com> - 2015-09-05 20:40 +0100
    Re: questions re Javascript Lew <lewbloch@gmail.com> - 2015-09-23 16:10 -0700
      Re: questions re Javascript Eternal Hope <laughingspam99@gmail.com> - 2015-09-24 10:40 +0100
        Re: questions re Javascript Martin Gregorie <martin@address-in-sig.invalid> - 2015-09-24 11:21 +0000
          Re: questions re Javascript Eternal Hope <laughingspam99@gmail.com> - 2015-09-24 20:10 +0100
            Re: questions re Javascript Lew <lewbloch@gmail.com> - 2015-09-24 13:18 -0700
              Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-09-24 19:40 -0400
                Re: questions re Javascript Martin Gregorie <martin@address-in-sig.invalid> - 2015-09-25 01:15 +0000
                Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-09-24 22:25 -0400
                Re: questions re Javascript Eternal Hope <laughingspam99@gmail.com> - 2015-09-25 03:46 +0100
                Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-09-25 09:59 -0400
                Re: questions re Javascript Eternal Hope <laughingspam99@gmail.com> - 2015-09-25 15:32 +0100
                Re: questions re Javascript Lew <lewbloch@gmail.com> - 2015-10-02 13:02 -0700
                Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-10-02 16:24 -0400
                Re: questions re Javascript Arne Vajhøj <arne@vajhoej.dk> - 2015-10-02 23:02 -0400
                Re: questions re Javascript Eternal Hope <laughingspam99@gmail.com> - 2015-10-03 13:30 +0100
                Re: questions re Javascript Lew <lewbloch@gmail.com> - 2015-10-04 21:31 -0700
                Re: questions re Javascript Eternal Hope <laughingspam99@gmail.com> - 2015-10-05 07:48 +0100
                Re: questions re Javascript Arne Vajhøj <arne@vajhoej.dk> - 2015-10-05 20:53 -0400
                Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-10-03 10:46 -0400
                Re: questions re Javascript Arne Vajhøj <arne@vajhoej.dk> - 2015-10-05 21:00 -0400
                Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-10-05 21:19 -0400
                Re: questions re Javascript Arne Vajhøj <arne@vajhoej.dk> - 2015-10-05 22:26 -0400
              Re: questions re Javascript Eternal Hope <laughingspam99@gmail.com> - 2015-09-25 15:32 +0100
            Re: questions re Javascript Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-09-24 16:58 -0400
              Re: questions re Javascript Martin Gregorie <martin@address-in-sig.invalid> - 2015-09-24 21:45 +0000
              Re: questions re Javascript Jeff Higgins <jeff@invalid.invalid> - 2015-09-24 18:27 -0400
              Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-09-24 19:53 -0400
                Re: questions re Javascript Arne Vajhøj <arne@vajhoej.dk> - 2015-09-24 22:03 -0400
                Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-09-24 22:34 -0400
                Re: questions re Javascript Arne Vajhøj <arne@vajhoej.dk> - 2015-09-24 22:46 -0400
                Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-09-25 09:56 -0400
                Re: questions re Javascript Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-09-25 10:15 -0400
                Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-09-25 11:44 -0400
                Re: questions re Javascript Eric Sosman <esosman@comcast-dot-net.invalid> - 2015-09-25 14:09 -0400
                Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-09-25 15:15 -0400
                Re: questions re Javascript Arne Vajhøj <arne@vajhoej.dk> - 2015-09-27 20:45 -0400
                Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-09-27 22:48 -0400
                Re: questions re Javascript Martin Gregorie <martin@address-in-sig.invalid> - 2015-09-28 03:29 +0000
                Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-09-28 00:02 -0400
                Re: questions re Javascript Martin Gregorie <martin@address-in-sig.invalid> - 2015-09-28 11:33 +0000
                Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-09-28 10:44 -0400
                Re: questions re Javascript Arne Vajhøj <arne@vajhoej.dk> - 2015-09-27 20:42 -0400
                Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-09-27 22:51 -0400
                Re: questions re Javascript Arne Vajhøj <arne@vajhoej.dk> - 2015-09-27 20:38 -0400
                Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-09-27 22:59 -0400
                Re: questions re Javascript Arne Vajhøj <arne@vajhoej.dk> - 2015-10-02 22:47 -0400
                Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-10-03 10:48 -0400
                Re: questions re Javascript Arne Vajhøj <arne@vajhoej.dk> - 2015-10-02 22:53 -0400
                Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-10-03 10:52 -0400
                Re: questions re Javascript Arne Vajhøj <arne@vajhoej.dk> - 2015-10-05 21:03 -0400
                Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-10-05 21:25 -0400
                Re: questions re Javascript Arne Vajhøj <arne@vajhoej.dk> - 2015-10-05 21:41 -0400
                Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-10-05 22:11 -0400
                Re: questions re Javascript Arne Vajhøj <arne@vajhoej.dk> - 2015-10-05 22:19 -0400
                Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-10-05 22:27 -0400
                Re: questions re Javascript Jeff Higgins <jeff@invalid.invalid> - 2015-09-24 22:30 -0400
                Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-09-24 22:42 -0400
                Re: Aho, A. V., & Ullman, J. D. (1972). The theory of parsing, translation, and compiling. Englewood Cliffs, N.J: Prentice-Hall. Jeff Higgins <jeff@invalid.invalid> - 2015-09-24 23:26 -0400
                Re: questions re Javascript Arne Vajhøj <arne@vajhoej.dk> - 2015-09-24 23:07 -0400
                Re: questions re Javascript Jeff Higgins <jeff@invalid.invalid> - 2015-09-24 23:55 -0400
                Re: questions re Javascript Arne Vajhøj <arne@vajhoej.dk> - 2015-09-27 20:46 -0400
                Re: questions re Javascript e.d.programmer@gmail.com - 2015-09-25 05:20 -0700
                Re: questions re Javascript Arne Vajhøj <arne@vajhoej.dk> - 2015-09-27 20:54 -0400
                Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-09-27 23:05 -0400
                Re: questions re Javascript Arne Vajhøj <arne@vajhoej.dk> - 2015-10-02 22:36 -0400
                Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-10-03 10:57 -0400
                Re: questions re Javascript Arne Vajhøj <arne@vajhoej.dk> - 2015-10-05 21:10 -0400
                Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-10-05 21:27 -0400
                Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-09-27 23:19 -0400
              Re: questions re Javascript Eternal Hope <laughingspam99@gmail.com> - 2015-09-25 03:46 +0100
            Re: questions re Javascript Arne Vajhøj <arne@vajhoej.dk> - 2015-09-24 23:35 -0400
        Re: questions re Javascript Lew <lewbloch@gmail.com> - 2015-09-24 13:10 -0700
          Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-09-24 19:55 -0400
            Re: questions re Javascript Martin Gregorie <martin@address-in-sig.invalid> - 2015-09-25 00:48 +0000
              Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-09-24 20:55 -0400
                Re: questions re Javascript Martin Gregorie <martin@address-in-sig.invalid> - 2015-09-25 11:17 +0000
                Re: questions re Javascript Eternal Hope <laughingspam99@gmail.com> - 2015-09-25 12:30 +0100
                Re: questions re Javascript Martin Gregorie <martin@address-in-sig.invalid> - 2015-09-25 17:00 +0000
                Re: questions re Javascript Jeff Higgins <jeff@invalid.invalid> - 2015-09-25 14:03 -0400
                Re: questions re Javascript Jeff Higgins <jeff@invalid.invalid> - 2015-09-25 14:14 -0400
                Re: questions re Javascript Martin Gregorie <martin@address-in-sig.invalid> - 2015-09-25 19:59 +0000
                Re: questions re Javascript Jeff Higgins <jeff@invalid.invalid> - 2015-09-25 17:13 -0400
                Re: questions re Javascript Martin Gregorie <martin@address-in-sig.invalid> - 2015-09-25 22:15 +0000
                Re: questions re Javascript Lew <lewbloch@gmail.com> - 2015-10-02 13:07 -0700
                Re: questions re Javascript Eternal Hope <laughingspam99@gmail.com> - 2015-10-03 16:48 +0100
                Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-09-25 10:02 -0400
                Re: questions re Javascript Martin Gregorie <martin@address-in-sig.invalid> - 2015-09-25 17:32 +0000
              Re: questions re Javascript Eternal Hope <laughingspam99@gmail.com> - 2015-09-25 03:45 +0100
                Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-09-25 10:13 -0400
            Re: questions re Javascript Arne Vajhøj <arne@vajhoej.dk> - 2015-09-24 21:58 -0400
              Re: questions re Javascript Arne Vajhøj <arne@vajhoej.dk> - 2015-09-24 22:34 -0400
              Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-09-24 22:35 -0400
                Re: questions re Javascript Arne Vajhøj <arne@vajhoej.dk> - 2015-09-24 22:51 -0400
                Re: questions re Javascript Arne Vajhøj <arne@vajhoej.dk> - 2015-09-24 23:00 -0400
                Re: questions re Javascript Jerry Stuckle <jstucklex@attglobal.net> - 2015-09-25 10:17 -0400
  Re: questions re Javascript Tim Slattery <tim@risingdove.com> - 2015-09-24 12:04 -0400

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