Sv: ASR33 Teletype interfacing

From: James M. Walker <>
Date: Sat Oct 4 03:54:42 2003

Hello Fellow Listers,
I am indeed new to the list, but also very glad I joined it/found out
about it.
I have 1 each 11/23 Dec system, and 1 each 11/24 system. The 23 system
is setup
with 2 pairs of RX-02 floppy drives, the 24 is setup with a second
source HD
system, with a removable disk pack, I think 10 MB, not sure. Along with
a large
plethora of micro-computers of the S-100 and desk-top type. Used to be a
applications engineer doing hardware installs and setups of Dec
equipment. My
memory tends to wander all over the place but here is an attempt at the
For the ASR-33 interface The DLV11 boards had a strapping arrangement to
to the the ASR-33. First a few questions. What is the state of the TTY
before you
connect it to the DEC system? As in when in "LOCAL" mode can you type
and see the
characters that you are typing? When you look at the cabling from the
ASR-33 how
many wires are in this cable, this determines if it is setup for current
operation, or if it has an internal RS-232 or RS-488 interface
(different setups).
Next if you have it connected correctly to the DLV11 is it indeed on the
I/O port on the board? That would would be the "Old Master Console" for
the system
administrator. If you could answer those questions I may be able to
guide you
towards getting the TTY connected.

Nico de Jong wrote:
> >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 :
> You'd probably better off in a ham related group. For them, it is a very easy thing
> Nico (OZ1BMC)
Received on Sat Oct 04 2003 - 03:54:42 BST

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