From: Grant Hutchinson (grant_at_splorp.com)
Date: Wed Mar 17 2004 - 10:26:59 PST
In a previous message, Jim Witte typed vigorously:
>I'm not sure, but I think the only real differences between at least
>the Palm and Visor keyboards is (possibly) the keymapping codes, and
>the electrical interface used (different pins, maybe different signal
>levels). But I haven't looked at the schematics for them in years.
The serial line levels are different between the Palm connector and the
Visor as well - not just the pin outs. The Palm uses RS232 level serial
versus TTL level signals on the Visor.
More information and related documentation (scroll to the bottom of the
page) is available on my Newton Stowaway Keyboard Project page.
http://www.splorp.com/newton/stowaway/
g.
......................................................................
Grant Hutchinson } Interface Considerations & Toys
Weblog } www.splorp.com
Newton } www.newted.org
Design } www.veer.com
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