Subject:
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Re: mindstorms NXT and memory
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Newsgroups:
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lugnet.robotics
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Date:
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Tue, 10 Jan 2006 04:37:20 GMT
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Viewed:
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9337 times
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In lugnet.robotics, steve sjbaker1@airmail.net wrote:
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pisymbol wrote:
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So for example, is the NXT chip capable of SIMD? I suspect it is since the
NXT FAQ talks about playing music.
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You can play music quite easily without SIMD.
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What about Jazelle? I know someone asked about using Java with the
NXT (a nice idea from the programmers standpoint). I know the J2ME KVM
can be as small as 128K.
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Well, you can run Java on an RCX...
http://lejos.sourceforge.net/
...so you certainly have the capacity to do so on the NXT.
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In fact, someone stated that historically ARM was “hard” to
program for and I have to disagree.
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I said that RISC machines (in general) are harder to program in
machine code. The ARM is as easy as any other processor to program
in high level languages.
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Do you mean machine code (binary) or assembly language? I first learned assembly
language programming on a MIPS chip (RISC). I’ve also done it on a Motorola
68HC11 (a microcontroller), and I’ve written both pure machine code and assembly
language for the Intel 8086. I much prefer the MIPS processor, followed by the
68HC11, and dead last is any Intel x86 chip. Bleah.
For machine code, pretty much any chip is “hard” to program.
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The first order of business for the NXT is to have some kind of sane cross or
toolchain environment that people could download and use.
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That’s gonna happen VERY quickly if Lego let us get into the machine
at the machine code level as they did with the RCX. There is already
a complete OpenSourced tool chain for the ARM in the form of the GNU
gcc/g++ compilers and libraries.
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I fully expect they will, since they released the LASM documentation (RCX
firmware bytecodes) with the Mindstorms SDK.
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Message has 1 Reply:
 | | Re: mindstorms NXT and memory
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| (...) There the same. (...) I guess my last post didn't make it. Fundamentally, Steve is correct that RISC is typically more complex to program since it uses less general purpose registers and more complex instructions (it tries to do more per clock (...) (18 years ago, 10-Jan-06, to lugnet.robotics, FTX)
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Message is in Reply To:
| | Re: mindstorms NXT and memory
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| (...) > NXT FAQ talks about playing music. You can play music quite easily without SIMD. (...) > NXT (a nice idea from the programmers standpoint). I know the J2ME KVM > can be as small as 128K. Well, you can run Java on an RCX... (URL) you (...) (18 years ago, 9-Jan-06, to lugnet.robotics)
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