Subject:
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Re: mode select pins
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Tue, 19 Nov 1996 20:35:04 GMT
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Original-From:
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Fred G. Martin <fredm@media.mit.%SayNoToSpam%edu>
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Viewed:
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800 times
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> Can somebody explain to me why the Handyboard MODB pin is hardwired to zero
> when normal expanded mode requires it to be set high. My book says MODA and
> MODB should be zero for special bootstrap mode and both high for normal
> expanded. According to the circuit the processor is running in single chip
> mode after a normal reset. Am I missing something here?
The HB runs in special test mode to facilitate control of the LCD
screen. Read the Appendix B information in the Tech Docs section for
more info.
-Fred
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Message is in Reply To:
 | | mode select pins
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| Can somebody explain to me why the Handyboard MODB pin is hardwired to zero when normal expanded mode requires it to be set high. My book says MODA and MODB should be zero for special bootstrap mode and both high for normal expanded. According to (...) (28 years ago, 19-Nov-96, to lugnet.robotics.handyboard)
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