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2026 Newsgroup Postings (03/27 - )

CP67 Terminal Support

CP67 Terminal Support

From: Lynn Wheeler <lynn@garlic.com>
Subject: CP67 Terminal Support
Date: 27 Mar, 2026
Blog: Facebook

Within year taking two credit hr intro fortran/computers, univ got
360/67 for tss/360 replacing 709/1401 and I was hired fulltime
responsible for os/360 (tss/360 never coming to production). A little
over another year, CSC came out to install CP/67 (3rd after CSC itself
and MIT Lincoln Labs). CP/67 arrived with 1052&2741 terminal
support (134.5baud) and auto-terminal ident, capable switching
terminal type scanner type for each port. Univ. also had TTY33&35
(110 baud) and I add ASCII support integrated with auto-terminal type.

I then want to have single dial-in number (hunt group) for all
terminals. Didn't quite work, IBM had hard-wired port line speeds
... so we start a clone terminal controller. Build a IBM channel
interface board for Interdata/3 programmed to emulate IBM controller
with the addition for auto-baud. Then upgraded with Interdata/4 for
channel interface and cluster of Interdata/3s for port
interfaces. Interdata (and later Perkin-Elmer) sell them as clone
controllers.
https://en.wikipedia.org/wiki/Interdata
https://en.wikipedia.org/wiki/Perkin-Elmer#Computer_Systems_Division

... and four of us are written up responsible for (some part of) clone
controller business

CSC posts
https://www.garlic.com/~lynn/subtopic.html#545tech
Clone/Emulated IBM mainframe controller
https://www.garlic.com/~lynn/submain.html#360pcm

--
virtualization experience starting Jan1968, online at home since Mar1970