Re: mystery card in GS

[dempson@actrix.gen.nz (David Empson)]

sporadic <sporadically@gmail.com> wrote:

> I bought yet another IIgs off eBay, this one had a mystery card that I
> can't ID:
> 
> It's a tiny card that doesn't actually sit in a slot, just screwed to
> a rear port.  The SuperSonic card is connected to the card, and the
> card has a ribbon cable header that goes into the J25 header.  There's
> also a cable that goes into the FAN header on the GS motherboard, and
> a fan that mounts on the power supply that plugs into the card.
> 
> The silk screen on the back of the card reads "Roger Wagner
> Publishing" and the FCC ID is HYORWIIGS.  The card itself has a
> standard headphone plug on the back.  The biggest chip on the card is
> a "CA324E".
> 
> it's pretty obvious that it pipes the output from the SuperSonic to
> it, but I don't get the purpose: the fan can just as easily plug
> direct into the motherboard, as can the SuperSonic cable.

That's the audio input card which came with HyperStudio (along with a
microphone that plugs into the card). Its standard connection
arrangement goes straight to J25. I have one somewhere, but it isn't
installed in my IIgs any more.

The ribbon cable is supplying audio input to the Ensoniq.

The SuperSonic is a separate product. It provides amplified audio output
from the Ensoniq. I haven't looked at mine for several years, but I
expect it has a pass-through connector so that some other device can
piggy-back to supply audio input.

The FAN connection on the logic board is just a source of power. The fan
is not related to the HyperStudio audio input card - the card piggybacks
off those pins as a power source. If a fan is installed, the audio input
card replicates the FAN connector for it.

-- 
David Empson
dempson@actrix.gen.nz