 | | Re: Very strange problems
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(...) As far as I can tell, legOS has some really strange bugs. I've learned to take it for granted that some programs (without warning) will just crash and lock up the machine. This is unfortunate, but I've never found a pattern to them so there is (...) (24 years ago, 21-May-00, to lugnet.robotics.rcx.legos)
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| | Re: lnp communication question
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(...) lnp does a checksum and throws away bad data. I think it is a 1 byte checksum so 1 out of 256 errors gets through anyway. There is no retry so timeout and retry has to be handled by some higher level code. (24 years ago, 21-May-00, to lugnet.robotics.rcx.legos)
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| | Very strange problems
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Hi! I am experiencing some very strange problems when programming my RCX. Sometimes (too often) the RCX just locks up when I run my program and I have to remove the batteries and reload the firmware. I have now found that very small changes in my (...) (24 years ago, 21-May-00, to lugnet.robotics.rcx.legos)
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| | RE: Help with Terminal Emulator
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(...) I have run into this too, Jerry. A few especially bothersome noise sources include video cameras, security systems, and remote controls. You might consider covering the RCX and tower with a box or towel... I'm glad the terminal emulator works (...) (24 years ago, 21-May-00, to lugnet.robotics.rcx.pbforth)
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| | Re: Help with Terminal Emulator
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I think my problem is bounce back noise. I doubled checked the port settings, started with a fresh set of batteries, made sure I had a clear buffer, but what made the difference is where I am doing my programming. I'm working off of a laptop, and (...) (24 years ago, 20-May-00, to lugnet.robotics.rcx.pbforth)
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| | arbitrary motor code
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Did anyone ever write the wrapper to allow motor_dir(motor_label x, MotorDirection dir) or some such? There was a variant of it way, way back (0.1.5?) but I don't see anything like it in the current CVS code. Anyone? Anyone? -Luis ---...--- "Going (...) (24 years ago, 20-May-00, to lugnet.robotics.rcx.legos)
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| | Re: lnp communication question
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(...) Ok, this brings up more questions :). I have never had any problems with errors when sending messages. Sometimes the message is not recieved but when it is, I have never seen any errors in the transmission. Am I missing your point? Second, (...) (24 years ago, 20-May-00, to lugnet.robotics.rcx.legos)
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| | Re: IR communication PC <-> brick with NQC
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(...) The RCX uses a special packet protocol which involes a lot of binary (non-ASCII) bytes, so controlling it with Hyperterminal won't work very well. Your best bet is to either write your own code to send the packets of the serial port or just (...) (24 years ago, 20-May-00, to lugnet.robotics.rcx.nqc)
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| | Re: Is there a compatible h8 assembler for forth words?
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(...) A good rule. I just know I'm going to need fast so I am planning ahead. Somehow I'm usually at the bleeding edge of trying to squeeze everything possible out of limited hardware. I originally learned my Forth on a 68000 (Mac Forth on the (...) (24 years ago, 20-May-00, to lugnet.robotics.rcx.pbforth)
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| | RE: Is there a compatible h8 assembler for forth words?
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(...) No there is not. That being said, it's pretty easy to write one...if you have the time. I fiddled around with it a bit and then gave up since the GNU tools worked pretty quick. It was strictly a time/value exchange. From bitter experience, (...) (24 years ago, 19-May-00, to lugnet.robotics.rcx.pbforth)
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| | Re: Is there a compatible h8 assembler for forth words?
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(...) I don't think this is clear. I ment an assembler written in pbforth that can create assembler defined words in the RCX (24 years ago, 19-May-00, to lugnet.robotics.rcx.pbforth)
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| | Is there a compatible h8 assembler for forth words?
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I asked this once before but in the middle of an unrelated email so the question got lost. (24 years ago, 19-May-00, to lugnet.robotics.rcx.pbforth)
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| | DJGPP GNU cross compiler tools
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It looks like my ISP has changed their policy about anonymous ftp and now allow it. I've placed the DJGPP port of the GNU tools on my website here: (URL) It's a 5 meg download. Please let me know if you have any problems downloading this file. I (...) (24 years ago, 19-May-00, to lugnet.robotics.rcx.legos)
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| | RE: hforth register usage
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(...) Right. If you look at the beginning of h8hforth.asm, I've abstracted the actual register names so I could move them around....here's the snippet from the file... ; The H8/300 Forth machine register usage has to be closely intertwined with ; (...) (24 years ago, 19-May-00, to lugnet.robotics.rcx.pbforth)
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| | Re: We need a FULL install of everything!
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On Thu, 18 May 2000 18:00:11 GMT, "Matt McDevitt" <maktos@maktos.com> wrote: <snip> I aggree fully with your statement Matt. I've tried to install LegOS several times and i always failed because of lack of time (and of course lack of knowledge <s>). (...) (24 years ago, 19-May-00, to lugnet.robotics.rcx.legos)
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| | hforth register usage
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Ralph, I'm trying to add an assembler word and trying to deduce register. usage. Could you verify for me please. It looks like the top cell on the stack is actually a register (r6). The second cell on the stack is pointer to by r7. This means that (...) (24 years ago, 19-May-00, to lugnet.robotics.rcx.pbforth)
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| | Re: Does anyone have Spirit.OCX?
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You can download it at www.legomindstorms.com. Just click look for RCX SDK. "Matt McDevitt" <maktos@maktos.com> wrote in message news:Furpv7.JMH@lugnet.com... (...) (24 years ago, 18-May-00, to lugnet.robotics, lugnet.robotics.rcx.legos, lugnet.robotics.rcx.nqc)
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| | Does anyone have Spirit.OCX?
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Could someone send me the file SPIRIT.OCX ? Matt maktos@maktos.com (24 years ago, 18-May-00, to lugnet.robotics, lugnet.robotics.rcx.legos, lugnet.robotics.rcx.nqc)
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| | We need a FULL install of everything!
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In response to your e-mail message: I realize it's *technically* better from a logistics standpoint to require people to download everything seperately, so they'll get the "absolute" latest version. However, I think that you have to give a little (...) (24 years ago, 18-May-00, to lugnet.robotics.rcx.legos)
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| | Re: How do I delete firmware from firmware?
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(...) This sounds correct. In C, this is how I do it: /* Delete the firmware */ *(char *)0xffcc = 1; (*(void (**)(void))0)(); Indeed, *(void (**)(void))0) is the reset vector, whose value is 0x03ae. 0xffcc is timer 0. I forget what effect setting it (...) (24 years ago, 18-May-00, to lugnet.robotics.rcx)
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