Re: Need Passport Soundchaser interface card schematics (or close-up photos)

[Toinet <antoine.vignau@laposte.net>]

On 15 août, 22:25, Ralph <rwh...@gmail.com> wrote:
> On Aug 13, 5:17 pm, Toinet <antoine.vig...@laposte.net> wrote:
>
> > On 13 août, 22:29, Ralph wrote:
> > > I'm looking for information on the keyboard interface for the Passport
> > > SoundChaser keyboard.....  All I need
> > > is the Apple 2 interface card, which has only 5 chips onboard.
>
> > There has been a recent auction on eBay which included a detailed
> > picture of the interface card, try to get it, it may help you,
>
> Could you post the auction ID?  The only detailed photo I've seen so
> far from a recent auction is
> for the Passport MIDI interface. (Auction ID 260642281880. - ended Aug
> 4th)
>
> Unfortunately, that's a 6840/6850-based card, which was developed
> after the Soundchaser
> keyboard.  MIDI cards have those round DIN connectors on them, while
> the Soundchaser
> interface used a 16-pin DIP for the interface cable.  So it's not MIDI-
> compatible.  I suspect
> that the 16-pin DIP is enough for a matrix-encoded keyboard.
>
> There are different interfaces in the pre-MIDI gear from Passport /
> AlphaSyntauri.
> The Syntauri line used a DB-25 connector on the back of the keyboard,
> and what looks
> like a dual-row header pin confguration on the Apple // card.
>
> The Soundchaser card uses a 16-pin DIP connector, and is a pale green
> two-layer card,
> with 5 7400-series TTL size chips onboard, based on what I see in
> these photos:
>
> http://www.mozomedia.com/apple2/media/sound_cards.jpg
> http://www.applefritter.com/node/137

Sure, there it is:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=110563738857

Why didn't I purchase it instead of discussing with the
seller??????????????????????????????????????????
antoine