6 Oct
2003
6 Oct
'03
1:51 p.m.
From: Ian Primus <ian_primus(a)yahoo.com>
One problem is that I don't know
what the Teletype is _supposed_ to do. I have never seen one
operational
Did you see my teletype page? It has movies of an operating teletype
http://www.pdp8.net/asr33/asr33.shtml Not too different than operation
in local mode.
I have been attempting to get my ASR33 teletype
connected to something
and communicating, but so far I have not been successful. I have built
the interface here :
http://www.daedalus.co.nz/~don/computing/20mahack.html
It looks pretty marginal, a lot of serial ports aren't going to have the
drive. I made a converter with optoisolators & rs-232 chips etc
which is a lot more complex than needed and also was a little strange since I
made it before I got that degree. If nobody has pointed you to a better one
I can scan my schematic, >15 years ago radio shack had the parts.
David Gesswein
http://www.pdp8.net/ -- Run an old computer with blinkenlights
Have any PDP-8 stuff you're willing to part with?