[rescue] Wanted: NeXT non-adb soundbox

[Ian Finder]

If I recall, it's carried as a digital signal encoded alongside the
keyboard, mouse etc. signals via the MON DATA I/O lines. Thus the purpose
of the circuitry in the sound-box, and why a cable alone won't suffice.


On Fri, May 2, 2014 at 10:08 AM, Mouse <mouse at rodents-montreal.org> wrote:

> >> I'm certainly not afraid to chop a NeXT cable in two and solder
> >> stuff onto the wire ends, so if that's good enough to bring things
> >> out to the world I'll probably have no need for the N4004.
> > The pinouts are here.
> > https://www.netbsd.org/ports/next68k/faq.html#connections
>
> Okay, now I'm curious.  According to that (well, the http: version of
> it, but I doubt NetBSD serves different content on that basis), the
> Dx-19 has
>
> GND (seven pins)
> +12V (two pins)
> -12V (two pins)
> MON CLK
> MON DATA OUT
> MON DATA IN
> MON PWR SWITCH
> VSYNC
> HSYNC
> VIDEO
>
> and one NC pin.  Yet the N4004 quite clearly has a speaker and what I
> suspect is a mic and definitely has audio out connectors.  Where/how is
> audio carried between the computer and the soundbox?  I am inclined to
> think there is an assumption I'm making which is false, but I'm
> wondering if someone can point out what it is.
>
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-- 
   Ian Finder
   (206) 395-MIPS
   ian.finder at gmail.com