Subject:
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Handy Board newbie looking for ways to expand digital I/O
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Sun, 27 Sep 1998 07:23:35 GMT
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Original-From:
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Ozan Cakmakci <CAKMAKCI@PILOT.nomorespamMSU.EDU>
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Reply-To:
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cakmakci@pilot.msu.eduSTOPSPAMMERS
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Viewed:
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1075 times
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Hi all,
I've started playing with the Handy Board last week and needed more
digital outputs then provided. After a quick look at the schematics,
FAQ's and the manual, I decided to disable the motor circuitry and
use the latch mapped to address 0x0e to get 8-bit digital out. This
worked for me. However, I need 16 more digital outputs so right now
I'm tending towards using an MC6821 as a"bus expander". I have never
worked with the 6821 before so any comments on that would be welcome.
Ozan
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