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 Robotics / Handy Board / *8109 (-5)
  Encoder Implemenation questions
 
I have contructed a robot that I want to be able to move and position itself accurately. I have encoders (the Hamamatsu P5587) attached to analog inputs 4 & 5 using sencdr4 & 5. I have 24 segment encoders that should give me a resolution of about (...) (23 years ago, 11-Jan-01, to lugnet.robotics.handyboard)
 
  Re: Basic assembler and downloader question
 
That did the trick. Thanks for helping me out with something so basic. I guess that I am next going to read up a little further on how the HandyBoard is using the special mode variations of the Motorola chip while still being able to access the (...) (23 years ago, 10-Jan-01, to lugnet.robotics.handyboard)
 
  Re: Basic assembler and downloader question
 
OK, I didn't see the following before. The HB has its reset vector at $BFFE. So the second ORG must be there, not at $FFFE. Please see (URL) more info. Fred In your message you said: (...) , (...) is (...) ot (...) (23 years ago, 9-Jan-01, to lugnet.robotics.handyboard)
 
  Re: Basic assembler and downloader question
 
I tried using dl.exe and the download appeared to work. However, the LED still did not turn on. Is something wrong with my code? Perhaps the RAM is not accessible at this point as the chip is in bootstrap mode? Again here is the listing (with the (...) (23 years ago, 9-Jan-01, to lugnet.robotics.handyboard)
 
  Re: Basic assembler and downloader question
 
(...) The first thing that occurs to me is this: are you sure that $8000 is a valid ROM/EPROM/EEPROM address? I would suspect that is the problem. I'm taking an educated guess though, since I'm not familliar with the software you are testing it (...) (23 years ago, 9-Jan-01, to lugnet.robotics.handyboard)


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