NeXTStation Color DSP cable pinout

From: r. 'bear' stricklin <red_at_bears.org>
Date: Sat Feb 15 16:03:00 2003

On Sat, 15 Feb 2003, Ian Primus wrote:

> I recently accquired a NeXTStation Color, complete with color monitor
> and DSP box. Unfortunately, I don't have the cable to go from the
> NeXTStation to the DSP box, and therefore, I can't use the computer
> because the keyboard also connects to the DSP box.

What you have is the sound box, and it doesn't connect to the DSP port.

> from searching the internet, I have found things such as this
> http://www.obsoletecomputermuseum.org/nextcolor/monitor_cable.jpg that
> show a three headed cable that would connect the monitor to the
> computer, and to the back of the sound box.

That's the cable you need.

> But then what would the DSP port be used for?

Whatever you like. I have a Quix Daydream plugged into my mono
NeXTstation.

> And how would the computer get the signals from the
> keyboard? I'm new to NeXT hardware, so any help would be greatly
> appreciated. Thanks!

Through the 19-pin end of the cable, that plugs into the monitor port on
the back of the NeXT.

The original NeXT design specified the "soundbox" built into the monitor.
All mono monitors for NeXT have it. The system provided keyboard and mouse
signals, audio signals, video signals, and power for the monitor on that
one cable, and it was split up inside the monitor.

When NeXT introduced systems capable of color graphics, they pulled that
circuitry out of the monitor and put it in a separate box.

You need the three-way cable. Some soundboxes had ADB (yes, like on
a Mac) instead of the traditional NeXT keyboard/mouse interface.

ok
r.
Received on Sat Feb 15 2003 - 16:03:00 GMT

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