Subject:
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8 bits A/D bus
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Wed, 14 Jan 1998 20:44:17 GMT
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Original-From:
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ValTres <ValTres@aol=nomorespam=.com>
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Viewed:
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1454 times
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Hello,
I've bought a handy board, and try to build a card to enserve two motors.
On that card I have a IC chip (HP hctl 1100) that needs to be link to a 8 bits
Adress/data bus in both reading and writing modes. My problem is where to pick
such a bus on the board. So my two questions are:
- Is it possible to connect to D0..D7 bus (knowing I want to keep the screen
working as it's made for) to pick up informations without affecting the
screen
functions? In that case do I need something as a latch to differentiate the
way
for the informations to go?
- Otherwise, how could I pick 8 I/O port on the board?
Please, help me: It makes me stay awaken all nights!!
Thanks in advance.
H.Tressel
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Message has 2 Replies:
 | | Re: 8 bits A/D bus
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| I am building a somewhat similar circuit (a high-current h-bridge for the handy board), although I only need to read the data lines. However, the same approach will work for writing to the bus. My circuit lives on a board which plugs in between the (...) (27 years ago, 14-Jan-98, to lugnet.robotics.handyboard)
| | | Re: 8 bits A/D bus
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| Please read Appendix B of the 6.270 Robot Builders Guide. This explains how to interface latches with the Handy Board. See (URL) Hello, (...) s (...) k (...) e (...) (27 years ago, 14-Jan-98, to lugnet.robotics.handyboard)
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