3 Nov
2004
3 Nov
'04
9:23 a.m.
On Wed, 3 Nov 2004, Kapteyn, Rob wrote:
I have a Friden Flexowriter somewhere that I adapted
for use with my Altair when I was a teenager.
Herbach&Rademan Surplus out of Philadelphia used to sell them.
They come with a huge box full of DTL electronics that provide some sort of telecomm
interface.
We found instructions in one of the Hobbyist magazines (Byte?) on how to connect that box
to the Altair serial port.
Later we found other instructions on how to eliminate the need for the box.
(It is huge -- I'd guess 12" x 24" x 36")
-Rob
I used to have a Flexowriter with a 110 baud RS-232 interface. I think it was
model 7102. It had all the control electronics in the bustle where the relays
would be on a normal Flexowriter (no external box needed). Seems to me the
logic was DTL. I remember that unlike a teletype, it needed several null
characters after a carriage return, and could not do a LF, only CRLF.
I can still hear hex dumps from that (loud) machine:
ratattat tattat tattat tattat tattat tattat tattat tattat tattat
ratattat tattat tattat tattat tattat tattat tattat tattat tattat...
Peter Wallace