4 Sep
2009
4 Sep
'09
11:10 a.m.
I wrote;
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.
Eric