Good evening (at least it's evening for me when I'm writing this), On Wed, 12 Mar 2025 at 15:25, Paul Koning via cctalk <cctalk@classiccmp.org> wrote: > The 1975 option/module list shows CP11-UP to be a product from "Special > Systems, California", a "Punch interface for Univac 1710 card rdr/punch". > The 1983 option/module list agrees entirely. Looking it up, it looks like the Univac 1710 was a keypunch. So it's not a dedicated punch like a Documation P100.
The "Where Used" column definitely shows "11" so it appears to have been intended for the PDP-11, and not the KS10. Interesting, and curious. > I had never heard of card punches for PDP-11 systems. I assume SSCAL is > something like CSS only more obscure. Most other DEC card punch products > shown in that list are CSS options, but there is another from SSCAL, the > CP20-E which is a controller for the Data Products 120 punch. Curiously, > given the model designation, the "used on" column says it's a PDP-15 > peripheral. Both are shown as being the work of Bob Edwards of SSCAL. The > product status is "3 -- Custom build". > So I'm going to guess then, that documentation for the CP11-UP is going to be absolutely unobtainable. Unfortunate. The 1983 option/module list lists two CP20-E_ entries, with description "CP20-C_ + DIB20" and then 120V, 60Hz or 240V, 50Hz power. The CP20-C_ entries just above list in their description "Documation P100 100cpm punch, CP10-DA controller, a Terra Cotta coloured H9502 cab" and 120 or 240 power. There's also a CP20-D_ pair that is equivalent to the CP20-E_ pair, but using the CP20-B_; and the CP20-B_ are the same as the CP20-C_, except the cabinets are in Blasi Blue. So it looks like the CP20 is just a rename for the older CP10, paired up with a DIB20 to let it run on a KL10B. Regards, Christian -- Christian M. Gauger-Cosgrove STCKON08DS0 Contact information available upon request.
