 | | Basic assembler and downloader question
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Hello All, I recently completed assembly of my Handyboard and now I'm excited to be moving into the coding realm (which is more my area). I was able to get Interactive C to communicate with the board. However, given my nature of wanting to (...) (24 years ago, 8-Jan-01, to lugnet.robotics.handyboard)
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| | Re: Basic assembler and downloader question
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Brian Try using dl.exe rather than dlm.exe Also, put a line LOOP BRA LOOP after you store the value in the Port A. otherwise the 6811 will happily execute whatever's next in memory. Fred In your message you said: (...) . (...) (24 years ago, 8-Jan-01, to lugnet.robotics.handyboard)
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| | Re: Basic assembler and downloader question
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(...) 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 (...) (24 years ago, 9-Jan-01, to lugnet.robotics.handyboard)
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| | Re: Basic assembler and downloader question
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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 (...) (24 years ago, 9-Jan-01, to lugnet.robotics.handyboard)
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| | Re: Basic assembler and downloader question
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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 (...) (24 years ago, 9-Jan-01, to lugnet.robotics.handyboard)
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| | Re: Basic assembler and downloader question
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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 (...) (24 years ago, 10-Jan-01, to lugnet.robotics.handyboard)
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