12 May
2015
12 May
'15
2:48 p.m.
-----Original Message-----
From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Eric Smith
Sent: 12 May 2015 19:32
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: IBM 029 Card Punch and ASCII Machines
On Tue, May 12, 2015 at 9:20 AM, Paul Koning <paulkoning at comcast.net>
wrote:
CP11 in
any peripherals handbook, nor in any OS. Was that a CSS product?
The CP11 might have been CSS. I wouldn't have thought so since the one
VAX site I knew that had one wouldn't likely have ordered CSS gear.
Possibly at one time they had enough need for punching cards to justify
buying CSS, but by the time I encountered it the punch was always powered
down with a dust cover over it.
For the PDP-8 the docs I found on the web suggest a very old IBM punch from the
1950's
Dave
On May
11, 2015, at 11:56 PM, Eric Smith <spacewar at gmail.com> wrote:
Almost all DEC machines up through early VAX supported card punch
options. They just weren't very common other than on PDP-10.
PDP-8: CP08
PDP-10: CP10 (multiple variants) and CP20
PDP-11 and VAX: CP11
Do you have any descriptions of that? I have not seen any mention of a Who built the punch engine? What sort of
interface did it use?
AFAIK, DEC didn't build any card punches; they are all OEM'd with DEC-built
interfaces. For the PDP-10 they OEM'd several different models, possibly
from multiple vendors. I don't know the details of any of them, even though
I used two different ones back in the day.
IIRC, the CP20 was a Unibus device, and might or might not have been
program-compatible with the CP11.