From: "Jay West"
<jwest(a)classiccmp.org>
Krown Research Porta-Printer II. This is a small keyboard, an accoustic
coupler on the back, and a calculator-style 2.5" printing tape in the
center. Think TI Silent700, that's kinda what it looks like except smaller
and with the tape role. In a nice hardshell carrycase. Marked at $40.00.
That is a Baudot TDD, the printing version of the Porta-Tel. If it's the
model I think it is, it was designed by a very small consulting company in
CA for them, for whom I worked when I was a senior in High School. We were
too cheap to buy development systems, so for every project with a new CPU I
wrote a cross-assembler in BASIC on our IMSAI. I can't remember what
processor was in that, though.