New finds: Some days you win, other days you WIN!

From: Peter C. Wallace <pcw_at_mesanet.com>
Date: Wed Nov 3 17:23:11 2004

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
Received on Wed Nov 03 2004 - 17:23:11 GMT

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