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 | | Re: is Mindstorm/RCX Y2K Compliant???
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| (...) What do you mean by "internal clock?" You seem to indicate that the microcontroller inside the RCX somehow knows the date. It does not. The only "clock" inside the microcontroller is a counter that counts cycles. It starts at zero when you (...) (26 years ago, 19-Jan-99, to lugnet.robotics)
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firmware
(score: 1.553)
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| | Re: Expression limitations w/bytecode
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| (...) The supplied programming environment does not allow you to subtract one sensor value from another, but the bytecode interpreter does. See: (URL) see NQC, as Dave Baum pointed out. You do not have to resort to replacement firmware unless you (...) (26 years ago, 19-Jan-99, to lugnet.robotics)
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firmware
(score: 1.553)
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| | Re: FLASHING LIGHT ON LCD PANEL?
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| In article <36A49D97.931256BD@myna.com>, Chris Magno <cmagno@myna.com> writes (...) Yes, me. If I spent less time reading lego-robotics and more time coding I would get there faster! I have written a qbasic program which will let you send bytecodes (...) (26 years ago, 19-Jan-99, to lugnet.robotics)
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firmware
(score: 1.553)
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| | Re: Robotics sub-groups
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| This is just my opinion, but I don't think that the creation of separate groups for legos or h8forth would be a good idea right now. Although a dedicated group to discuss alternative firmware is a good idea, I think overspecializing it right now (...) (26 years ago, 15-Feb-99, to lugnet.admin.general, lugnet.robotics)
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firmware
(score: 1.553)
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| | Re: is Mindstorm/RCX Y2K Compliant???
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| "....even when only relative time is required by the OEMs, this may often be derived from chips that keep absolute time internally. Those chips that represent absolute time using two digit dates are subject to Year-2000 failures just as with (...) (26 years ago, 20-Jan-99, to lugnet.robotics)
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firmware
(score: 1.553)
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| | CFD: robotics sub-groups
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| Last week, the topic came up about creating a special new group for Robot Arena. (See (URL) for more details and how the thread unfolded.) Assuming this belongs inside the .robotics hierarchy (rather than inside a separate .events hierarchy), a (...) (26 years ago, 22-Jan-99, to lugnet.admin.general, lugnet.robotics)
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firmware
(score: 1.553)
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| | Re: datalog in legOS
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| There is no datalog in LegOS. Remember it does not use the lego firmware. It's a replacement of the firmware. Instead you have the full 32KB for whatever purpose you could imagine. Use it as a big array to store your data and send it with the (...) (26 years ago, 16-Feb-99, to lugnet.robotics)
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firmware
(score: 1.552)
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| | NQC - ASM command
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| What functionality does the ASM statement give? Does it allow you to directly specify firmware opcodes or is it lower level than that? There are two things that I would like to do. One is to have direct access to the speaker, and the other is to be (...) (26 years ago, 30-Jan-99, to lugnet.robotics)
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firmware
(score: 1.552)
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firmware
(score: 1.552)
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| | Re: Motor power?
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| The firmware does do PWM. One reason you aren't seeing much difference is that the motor has an internal flywheel. When the pulse is "on", the motor revs up to speed, then this speed is maintained by the flywheel during the "off" pulse. If you put a (...) (26 years ago, 17-Feb-99, to lugnet.robotics)
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firmware
(score: 1.551)
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firmware
(score: 1.551)
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| | Re: Memory
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| What would be more useful - and what I'm assuming (hoping?) alternate firmware like legOS are up to - is to allow you to manage the available memory between data space and code space. There are 6100 bytes of memory available for 5 programs and a (...) (26 years ago, 8-Feb-99, to lugnet.robotics)
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firmware
(score: 1.551)
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| | Re: Alternative compilers for native RCX code?
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| I've just compiled a copy of egcs-1.1.1 on NT, using the cygwin gcc. These compilers (C and C++) and other related utilities can be used by Windoze users to compile legOS (or your own replacement firmware). The archives (rcx-tools.tar.gz and (...) (26 years ago, 4-Feb-99, to lugnet.robotics)
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firmware
(score: 1.551)
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| | Re: Alternative compilers for native RCX code?
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| =>From: "Gavin Smyth" <gavin@beeskneesDOTf...OTcoDOTuk> =>... =>A brief web search for "H8" and "compiler" showed up a number of people =>selling, er, H8/300 compilers. One notable entry was HI-TECH Software who =>have a limited eval compiler (...) (26 years ago, 4-Feb-99, to lugnet.robotics)
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firmware
(score: 1.550)
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| | Re: Robotics sub-groups
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| (...) OYS! (Oops, Yup, Sorry!) NQC is a software development tool which runs on a non-RCX host machine and translates ASCII source code statements into RCX internal bytecodes intended to be downloaded to the RCX unit for execution, yes? Would you (...) (26 years ago, 6-Feb-99, to lugnet.admin.general)
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firmware
(score: 1.550)
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| | Re: NQC v. LegOS
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| (...) I run Linux. I sneer at "easy installation." :-) (...) 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 (...) (26 years ago, 6-Feb-99, to lugnet.robotics)
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firmware
(score: 1.550)
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| | Re: One Big Program
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| Small misunderstanding... The RCX firmware contains a small interpreter which runs "RCX bytecodes". These are very different from H8 machine language. NQC generates code that runs within the interpreter, and asm statements just generate raw (...) (26 years ago, 23-Feb-99, to lugnet.robotics.rcx.nqc)
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firmware
(score: 1.549)
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| | Re: Motor power?
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| =>From: Dan McCabe <danm@seanet.com> =>... =>When I set the motor power (both in RIS and nqc), I expected the speed =>of the motor to be proportional to the power setting (i.e., higher power =>setting makes motor turn faster and vice versa). (...) (26 years ago, 17-Feb-99, to lugnet.robotics)
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firmware
(score: 1.549)
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| | Motor power?
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| When I set the motor power (both in RIS and nqc), I expected the speed of the motor to be proportional to the power setting (i.e., higher power setting makes motor turn faster and vice versa). However, what I see is that the power setting appears to (...) (26 years ago, 17-Feb-99, to lugnet.robotics)
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firmware
(score: 1.549)
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| | RCX Assembler programing
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| I'm using the RCX together with the Spirit OCX and VB 5. But it seems to me as the Spirit OCX has the comfort of machine language and the flexibility of standard basic. So I would like to have a more powerful and flexible tool for the programming ( (...) (26 years ago, 14-Feb-99, to lugnet.robotics)
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firmware
(score: 1.549)
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