Subject:
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Re: Address locations port d and y0
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Sun, 18 Oct 1998 16:58:58 GMT
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Original-From:
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Fred G. Martin <fredm@#IHateSpam#media.mit.edu>
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Viewed:
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1132 times
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it's in the faq, at
http://el.www.media.mit.edu/projects/handy-board/faq/index.html#memmap
all you do is write to 0x4000, 0x5000, 0x6000 depending on whether
your latch is attached to Y0, Y2, or Y4 (respectively). e.g.,
"poke(0x4000, 0xff);" will set all the bits of a latch attached to Y0
to 1.
Fred
In your message you said:
>
> Ok I've had another read of the FAQ, as well as a close look at the
> schematics for the handyboard and the expansion board. Correct me if I'm
> wrong, but I think I can use d0-d7 along with Y0 or similar and hook these
> into a HC374 to get some digital outputs.
>
> My question is, what address do I have to poke to in order to set or unset
> these bits? I can't find this information anywhere, and I've gone over all
> the source code I can find. Also what should the sequence be? I know it's
> similar to the motor output routines, but I can't work it out.
>
> Any help would be great,
>
> Thanks
> Adam
>
>
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Message is in Reply To:
 | | Address locations port d and y0
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| Ok I've had another read of the FAQ, as well as a close look at the schematics for the handyboard and the expansion board. Correct me if I'm wrong, but I think I can use d0-d7 along with Y0 or similar and hook these into a HC374 to get some digital (...) (26 years ago, 18-Oct-98, to lugnet.robotics.handyboard)
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