Subject:
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Re: NQC v. LegOS
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Newsgroups:
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lugnet.robotics
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Date:
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Sat, 6 Feb 1999 22:57:50 GMT
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Original-From:
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Luis Villa <liv@duke*nomorespam*.edu>
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Viewed:
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1327 times
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On Sat, 6 Feb 1999, Mark Tarrabain wrote:
> NQC's primary advantage over LegOS is that it's easier to install and operate.
I run Linux. I sneer at "easy installation." :-)
> LegOS's primary advantage, on the other
> hand, is that it gives you a full C programming language to work with, so you can
> have your own struct types, more variables, and as a native code compiler, it gives
> you full access to the RCX's capabilities.
Maybe Markus can answer this better, but is it full C? I got the
impression that the H8300 patch to gcc had some limitations. Am I correct in
this? If so, what are those limitations/shortcomings?
> NQC programs can only operate the RCX
> in the way that LEGO's operating system which is uploaded to the RCX as "firmware"
> allows. It is this "firmware" that LegOS replaces. An RCX running LegOS programs
> won't be able to run normal Mindstorms programs until the the normal "firmware"
> code has been re-uploaded back into the RCX.
Ahh. I see. I didn't realize why NQC had problems- I thought the limitations
in the stuff that comes from Lego was in the language, not the firmware.
> To the best of my knowledge LegOS, shares none of the weaknesses that NQC has. The
> only disadvantage to LegOS that I can see is that it's not particularly simple. It
> makes me think of the idea of using a firehose to put out a small kitchen fire
> instead of using a handheld fire extinguisher. NQC, following this analogy, would
> amount to something less than a fire extinguisher, in my opinion... probably the
> equivalent of a single bucket of water.
Thanks for the input, Mark. I intend to use this for some pretty serious
programming, so it's not much of a "fire hose" for me.
> Did you check the web site first?: http://www.crynwr.com/lego-robotics
Yes, I did ;)
-Luis
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--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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Message has 2 Replies:
 | | Re: NQC v. LegOS
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| (...) It isn't a patch for gcc -- the H8300 is a supported target. The only limitations are that the processor has 16-bit ints, which when you start to include traditional libc functions, can require some porting effort, as with other code that you (...) (25 years ago, 7-Feb-99, to lugnet.robotics)
| | | Re: NQC v. LegOS / size
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| Hi Luis, (...) I like your attitude ;-) There's a new precompiled package of H8 tools for Windows around (~8MB zipped, ~22MB installed), courtesy of Dave Madden. My precompiled Linux/glibc package (~1.5MB gzipped, ~3.4 MB installed) is equally easy (...) (25 years ago, 7-Feb-99, to lugnet.robotics)
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Message is in Reply To:
| | Re: NQC v. LegOS
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| (...) NQC's primary advantage over LegOS is that it's easier to install and operate. LegOS requires a lot more "stuff" that people just wanting to play with the RCX probably wouldn't care that much about. LegOS's primary advantage, on the other (...) (25 years ago, 6-Feb-99, to lugnet.robotics)
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