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Re: Syntauri keyboard question




"Toinet" <antoine.vignau@laposte.net> wrote in message 969442a7-ba80-4333-aca1-ba2efc89f9c5@e23g2000yqd.googlegroups.com">news:969442a7-ba80-4333-aca1-ba2efc89f9c5@e23g2000yqd.googlegroups.com...
On 3 nov, 21:02, "Michael J. Mahon" <mjma...@aol.com> wrote:
Toinet wrote:
> Hello There,

> A Parisian eBay "colleague" is selling a Syntauri keyboard with no
> warranty nor disk nor expansion card and I am interested in buying it.

> I know, it is like having a car with no engine (or replace with a more
> adequate image) but I was wondering whether having a such a card is:
> - difficult to find and buy (because it is rare ;-)
> - difficult to copy (because of specific ICs)
> - easy to clone (thanks to Carte Blanche)

It's not a particularly complex card (I don't have one, but I've seen
one), since it is basically a multiplexer keyboard scanner.

There are a couple of models of the keyboard--one velocity-sensing and
one not. The timing requirements for scanning the velocity-sensing
one are pretty tight, since time from "break upper contact" to "make
lower contact" is in the millisecond range, and is used to determine
velocity.

I'm sure someone has good scans of the card.

-michael

NadaNet 3.0 for Apple II parallel computing!
Home page: http://home.comcast.net/~mjmahon/

"The wastebasket is our most important design
tool--and it's seriously underused."
: : Thank you, Michael, : : I am now the proud owner of an Alpha Syntauri keyboard (s/n A003356)
: with one pedal and no interface card. See http://www.brutal-deluxe/public/
: in the Alpha Syntauri folder - Disk images collected from
: garberstreet.com.
: : How do I determine the kind of keyboard I have? Just uncover it? : : Antoine You forgot the '.fr', so I fix it for you. :-) http://www.brutal-deluxe.fr/public/
Bill Garber of Garberstreet Electronics
http://www.garberstreet.com