 | | CONSTANTS and VALUES in pbForth
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(...) There are a couple of things in this note. One is an introduction to CREATE DOES> and the other is a solution to your actual problem. Basically, what CREATE DOES> does is separate the run-time and compile time semantics of a word. This is (...) (24 years ago, 24-May-00, to lugnet.robotics.rcx.pbforth)
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| | Re: Forth question
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(...) You might want to try : zzz S" CONSTANT ONE" EVALUATE ; 1 zzz (...) I think VALUE can be used for that. Ernst (24 years ago, 24-May-00, to lugnet.robotics.rcx.pbforth)
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| | Re: How do I delete firmware from firmware?
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(...) Great. Thanks. This is a real lifesaver since I am deleting and reloading firmware at a rapid rate and my RCX is inside a construction which makes it awkward to get at the batteries. Now the delete/reload can be done entirely at the GUI. (24 years ago, 24-May-00, to lugnet.robotics.rcx.pbforth)
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| | Re: Forth question
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(...) Actually the various reasons are simple so I might as well state them. The serial port is not available at the time I want to create a constant because the serial port will be broken and therefor can't be used as the forth input stream. I am (...) (24 years ago, 24-May-00, to lugnet.robotics.rcx.pbforth)
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| | Re: Forth question
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(...) I still want to create a constant from within a definition. I have an initializing word that will calculate the value of the constant. For various reasons I can't do this calculation except within the runtime behavior of the word. This is not (...) (24 years ago, 24-May-00, to lugnet.robotics.rcx.pbforth)
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| | RE: Forth question
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(...) 1 CONSTANT ONE Recall that CONSTANT is a *defining* word, just like the ":" It makes a name in the dictionary, in this case "ONE" and then links to a special bit of code that is executed every time ONE is interpreted. It grabs the value out of (...) (24 years ago, 24-May-00, to lugnet.robotics.rcx.pbforth)
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| | Forth question
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I'm trying to define a constant in a compiled word. : zzz 1 CONSTANT ONE ; I know its not right. It tries to compile "ONE" which is not what is wanted. What is the right way to say this? (24 years ago, 24-May-00, to lugnet.robotics.rcx.pbforth)
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| | Re: RTC
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(...) Yes. The IR just becomes a dumb serial port whith an annoying builtin echo, almost like you had a serial port cable attached to the RCX. Open the port on the host system using whatever language you want and proceed to send commands to it. Of (...) (24 years ago, 23-May-00, to lugnet.robotics.rcx.pbforth)
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| | RE: RTC
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(...) You can use RCX.pm, but that's really for sending native byte streams to the RCX. You can just use standard IO calls to write to the serial port on your Linux Box. Cheers, Ralph Hempel - P.Eng ---...--- Check out pbFORTH for LEGO Mindstorms (...) (24 years ago, 23-May-00, to lugnet.robotics.rcx.pbforth)
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| | Re: RTC
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NOTE: This is a continuation of a conversation with Mr. Hempel via email. >> Can I send this text to the robot from a pc at an arbritrary time? How long >> will it take each instruction to download? >Yes you can. I've written a Tcl (...) (24 years ago, 23-May-00, to lugnet.robotics.rcx.pbforth)
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