4 Sep
2009
4 Sep
'09
2:23 p.m.
On Sep 4, 2009, at 2:10 PM, Eric Smith wrote:
I just think it's neat. :)
AFAIK, the
first commercially available modem for voice-grade
PSTN to
achieve 9600 bps or more was the Telebit
Trailblazer, introduced
in 1985.
Dave McGuire wrote:
And there's a 68K under the hood!
Everyone makes a big deal about that, but all the interesting work
was being
done by the TMS32010 DSP. The 68K was just supervising and running
the error control and compression. The prototype used a 6809 processor for control, and a
DSP section
using a
TRW multiplier chip, a lot of TTL, and some high-speed memory. I
donated
the last remaining prototype board to CHM a few years ago. Paul
Baran,
the inventor of packet switching and founder of Telebit,
authenticated it.
I remember your talking about that some time ago. That's
amazingly cool.
-Dave
--
Dave McGuire
Port Charlotte, FL