 | | Re: LNP Repost
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(...) I'm not sure you can construct a sensible CRC16 that has a CRC8 as one byte. Cheers, Ben. -- (URL) grandfather once told me that there are two kinds of people: those who work and those who take the credit. He told me to try to be in the first (...) (25 years ago, 30-Jul-99, to lugnet.robotics.rcx.legos)
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| | Re: LNP Repost (Me banging on about checksums)
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(...) You will miss about 1 in 256 errors that you do not catch earlier using collision detection. I think your error rate per message will be much less than 1 in 256 if you (can?) get the collision detection code right. But we shouldn't argue the (...) (25 years ago, 29-Jul-99, to lugnet.robotics.rcx.legos)
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| | Re: LNP Repost (Me banging on about checksums)
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(...) With much respect, I would suggest that CRC8 is probably not sufficient, especially if we go for a broadcast (Ethernet) solution, where lots of collisions, and hence errors, will probably occur - with CRC8 you will probably miss about 1 in 256 (...) (25 years ago, 29-Jul-99, to lugnet.robotics.rcx.legos)
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| | Re: New pbFORTH 106 release
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Hi Ralph, Thanks for the new release. I have a couple of questions: 1. How do I use BUTTON_GET? The documentation says it just expects to find an address on the stack, but I get this: RCX_BUTTON BUTTON_GET BUTTON_GET ? stack underflow 2. What (...) (25 years ago, 29-Jul-99, to lugnet.robotics.rcx.pbforth)
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| | Re: rcxhttpd?
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I love the idea, I think it would be great to see hundreds of little bots whizzing round my house comunicating with each other. Its a bit like teaching your dog to fetch the morning mail. Alan Bell. (...) (25 years ago, 29-Jul-99, to lugnet.robotics.rcx)
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| | Re: Laser Pointers
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(...) Laser pointers were legal in the uk but to my knowledge have been banned because kids were misusing them, in one incident a Bus nearly crashed and the driver was in hospital for a while after a school kid bounced the laser beam of the rear (...) (25 years ago, 29-Jul-99, to lugnet.robotics.rcx)
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| | Re: LNP Repost
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(...) My only thoughts are that not everybody will need or want the generality of port support in the protocol. I would suggest reordering the first four bytes, moving the payload length up toward the front, and defining it to explicitly include the (...) (25 years ago, 28-Jul-99, to lugnet.robotics.rcx.legos)
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| | Re: legOS and Markus in Forbes
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(...) Me, too ;-) Markus. (25 years ago, 28-Jul-99, to lugnet.robotics.rcx.legos)
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| | Re: LNP Repost
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(...) As am I - it looks interesting, but looks like it may have died. Hopefully not! (...) election process. I had wondered about this. My big suggestion is for us to come up with a software API for both the RCX end and PC (or whatever) end. This (...) (25 years ago, 28-Jul-99, to lugnet.robotics.rcx.legos)
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| | Re: LNP Repost (Checksum algorithm)
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This has little (Err... nothing in fact) to do with Lego, but worth noting as it is handy when you need a good SW checksum! (...) Indeed, as you say the standard I mentioned does use mod 255 (See Annex C ISO/IEC 8473-1 : 1994 [(URL) As far as I can (...) (25 years ago, 28-Jul-99, to lugnet.robotics.rcx.legos)
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| | New pbFORTH 106 release
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This is a bulk mailing of notice of the new pbFORTH 106 release. If you don't want to be on this list, please email me so I can take you off. The latest and greatest pbFORTH is now available. Enhancements include: 1. Fixed issues with timers (thanks (...) (25 years ago, 28-Jul-99, to lugnet.robotics.rcx, lugnet.robotics.rcx.pbforth, lugnet.robotics.rcx.legos)
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| | Re: legOS and Markus in Forbes
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This was my reaction too. In fact, I was gleefully skipping around with a printout! Congrats and thanks to those involved. -Suz. (...) (25 years ago, 28-Jul-99, to lugnet.robotics.rcx.legos)
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| | Re: LNP Repost
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I am coming into the middle of this (or at the end considering the posting dates), and am hoping I don't sound like a fool putting out these ideas (since I don't yet know how legOS works). Is the RCX# used as a sort of ethernet MAC address? If you (...) (25 years ago, 28-Jul-99, to lugnet.robotics.rcx.legos)
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| | RE: TIMER 0 is flakey
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(...) That's not all. Seems like I've left half of the words using the old calling convention..... I'll get 1.0.6 out and posted by tomorrow, along with the TCL gui and a small test suite. Cheers, Ralph Hempel - P.Eng ---...--- The train stops at (...) (25 years ago, 28-Jul-99, to lugnet.robotics.rcx.pbforth)
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| | Re: legOS and Markus in Forbes
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Yahoo! Maybe we adult lego enthusiasts can finally come out of the closet & say, "were here, we like lego's, GET USED TO IT!!!" : ) Michael Aaron (...) (25 years ago, 28-Jul-99, to lugnet.robotics.rcx.legos, lugnet.robotics)
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| | Re: legOS and Markus in Forbes
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(...) That's kind of only a tiny mention. I meant that it didn't really talk about it in-depth. That's what's so cool about the new article, IMHO -- it's a first step toward a larger awareness. --Todd (25 years ago, 27-Jul-99, to lugnet.robotics.rcx.legos, lugnet.robotics)
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| | Re: legOS and Markus in Forbes
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It does talk about the " using an open architecture system. " "MindStorms robot developers were creating code in a variety of languages like Visual Basic and C on their PCs and uploading the code to the RCX units. " John A. Donaldson (...) (25 years ago, 27-Jul-99, to lugnet.robotics.rcx.legos, lugnet.robotics)
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| | RE: Do the high resolution timers work?
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(...) Yep, you've got the parameters backwards. Try FFFF 0 timer_set. Also, I'm not sure about numbers above 0x8000... I'm working on a TclTk interface for uploading firmware images to the RCX and for pbFORTH scripts. I ALMOST have the comment (...) (25 years ago, 27-Jul-99, to lugnet.robotics.rcx.pbforth)
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| | RE: TIMER 0 is flakey
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(...) Looks like I'd better test this again, and maybe release 1.06... Sorry. Cheers, Ralph Hempel - P.Eng ---...--- The train stops at the train station, The bus stops at the bus station, So why am I sitting at a work station? ---...--- Reply to: (...) (25 years ago, 27-Jul-99, to lugnet.robotics.rcx.pbforth)
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| | Re: legOS and Markus in Forbes
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(...) (I guess I should have posted, instead of going to lunch! ;-) But there *IS* a URL...they just didn't put http:// in front of it, so your browser may have missed it. They mentioned Markus' site ((URL) in that same paragraph. (They mention (...) (25 years ago, 27-Jul-99, to lugnet.robotics.rcx.legos, lugnet.loc.us.ca.sf)
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