 | | Many HandyBoard questions (and a few answers)
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I wrote this a few weeks ago, and could not post the darn thing, as lugnet wouldn't let me. Since then, I have answered a few of my questions, and will include them to help others. I now have an unassembeld HB from Acronome, and look forward to (...) (23 years ago, 8-Jan-02, to lugnet.robotics.handyboard)
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| | 2nd expansion board
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Can the handy board drive more than more expansion board (assuming that the Y board-select lines are different)? (23 years ago, 7-Jan-02, to lugnet.robotics.handyboard)
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| | Re: 0x8000 and main()
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Fred, Dan, and Chuck, Thanks to an email from Chuck McManis (thanks, Chuck), I now have a better understanding of what's going on with respect to the main() function and memory location 0x8000. Chuck asked me if the main() function is executed after (...) (23 years ago, 6-Jan-02, to lugnet.robotics.handyboard)
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| | Re: 0x8000 and main()
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Fred and Dan, For some reason, I'm apparently having trouble explaining my findings, doing something wrong -- or not understanding what Fred is telling me. Now that my HB runs " main() " functions just fine upon powerup reset, I did my experiment on (...) (23 years ago, 5-Jan-02, to lugnet.robotics.handyboard)
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| | Re: Devantech SRF04 library for HandyBoard
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Yes -- I am very sorry about this... I just updated the .zip file and it now includes the sonar.c file as well. Regards, Willem "Andrew Vlasov" <vlas@dicomp.ru> wrote in message news:01b101c194fe$98...d4@vlas... (...) (23 years ago, 5-Jan-02, to lugnet.robotics.handyboard)
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| | Re: Devantech SRF04 library for HandyBoard
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Hi, Willem! Sorry, but "sonar_library_1.0.zip" is not full: "sonar.c" not found! And how about Devantech CMPS01 Compass library? It need i2c in HB. Do you plan this? ===...=== Best regards, Andrew. ----- Original Message ----- From: "Willem van (...) (23 years ago, 4-Jan-02, to lugnet.robotics.handyboard)
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| | Re: 2 questions on Polaroid 6500
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Jan, On ribon cable the lead that has the marking is simply there to make it easier to tell what lead is what on the other end. The marked lead usually denotes pin one, but not always. Remember that the drawing is show from a bottom view. Pin 9 is + (...) (23 years ago, 3-Jan-02, to lugnet.robotics.handyboard)
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| | Re: 0x8000 and main()
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I don't think this is quite it -- IC sets the byte if there's a main fcn. It also sets up some code so that main fcn gets run. Fred (...) (23 years ago, 3-Jan-02, to lugnet.robotics.handyboard)
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| | Re: 0x8000 and main()
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John, I think it lies in the Pcode, in other words if the pcode sets the 0x8000 to 1 then any program loaded that has main() in it will auto run at startup. If the pcode does NOT set 0x8000 to 1 then no matter what you have loaded as a program it (...) (23 years ago, 3-Jan-02, to lugnet.robotics.handyboard)
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| | 0x8000 and main()
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Dan, Perhaps I'm misinterpreting what you mean by "a startup program". To me, a "startup program" means there is a file downloaded to the HB that contains a " main() " function, i.e., a function which will automatically be executed upon startup (...) (23 years ago, 3-Jan-02, to lugnet.robotics.handyboard)
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