Hi everyone,
I am still looking for information about an IBM card punch which I thought
was some variant of an IBM 029. I've found out that this must be an
"IBM 545 input output card punch". So, has anyone any information about
this punch?
(Pictures are on http://computermuseum-stuttgart.de/dev/tmp/ibm029.html)
Christian
>
>Subject: Intercept (6100) PDP-8 compatibility?
> From: Tom Jennings <tomj at wps.com>
> Date: Thu, 07 Jul 2005 23:04:59 -0700 (PDT)
> To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org>
>
>I know the base instruction set is right but I'm fairly sure the
>IO structure is radically different, but --
>
>What peripgherals and OS software is available for, or runs on,
>the Intercept? (Not the Jr board, the rack-mount job).
>
>I'm thinking it might make a comfortably modern old machine...
>
You can run most base PDP-8 software. The small difference is the
console IOTs are differently assigned but easily fixed in the code.
Its the side effect of their IO devices.
Allison
Available in near/in Huntsville Alabama, a VAX 3400 + extra's.
Please contact him using the email address below.
======
>On Fri, 8 juli, 2005 10:12 pm, wcrouch at cwcinc.net said:
> >
> > ... Interested in a MicroVax 3400 system
> > (multiple drive towers, BA 11/K unibus chassis -
> > with interface cards for connecting with the
> > MicroVax, multiple xterms, line printer, tape
> > drives, documentation, ...)?
> > It was the control computer for a multi-gigabit
> > per sec Aptec crossbar I/O system.
> >
> > I also have the aptec. It uses ECL logic, so the
> > power supply is 2v at around 1000 amps. 'Makes a
> > nice spot-welder!
> >
Well pulling out my Hero-Jr robot for some photos I noticed the two card
sample booklets I go a few weeks ago. There seems to be over 300 different
card stock samples in the two salesman booklets. One is called "general
Purpose Card Sample IBM Data Processing Cards" form # 570-0275 9-67 and the
other is "IBM Standard stock card formats" form # 570-0440 from around 1970.
I had no idea of all the many card formats IBM had.
The /45 lives, got a console up with the console emulator today. I never did
get a blinking lights program to show up right, but I'm too embarassed to
admit what likely caused that. But I got a lot of other few instruction
programs to work correctly so I moved on to the DL11 and 9312 setup and got
it all working. Only have 8K of core, but hey, it's a start. Once I get it
to boot from a peripheral I'll take out the loaned cpu set and move mine
back in and see where it chokes.
So now I have a few peripheral questions. I was going to put in an RL02
drive, but I've been advised against putting one in the same cabinet as the
cpu cab is top cooling intake :\ Now I'm moving on instead to hooking up and
testing a LincTape II and a DSD440 drive. I found the docs for the DSD440
drive on bitsavers; my drive is missing the controller to drive cable. From
those docs it appears to be a straight through 2x13 pin berg connector at
each end. Can anyone confirm this? Also, If the DSD440 drive is set for
RX01, will it work with the standard dec boot rom (DX) on the 9312?
Likewise, if it's set for RX02 emulation will it work with the DY boot room
on the 9312? Or does the DSD440 need a unique bootrom?
I also have the LincTape II & controller (&cable), model CO-3000D. However,
I don't see any docs for it on bitsavers and my googling gives tons of stuff
on the Linc, not the LincTape II. Does anyone have docs for the LincTape II
in electronic format? Or better yet... a boot rom for it :>
I have spare boot roms (DP, RP02/03 and DM, RK06/07) that I doubt I'll ever
use and would be available for trade.
Thanks!
Jay West
If someone knows the magic to pull a RA81 out of a rack and off the slides
completely, I'd love to know it! I have two in the other H960 that someone
mounted backwards in the rack :\
I pull the drive about halfway out and to get it further, flip up the
"rocker" catches under the rail. Then it comes all the way out and clicks to
a stop. Most rails I've seen... you have to get them about 3/4 of the way
out and then a screw will appear in a hole that you have to take out. These
slides have that hole but the screws are already out. What obvious trick am
I missing?
Jay
I just finished putting a bunch of DEC manuals and a complete core memory
sub-system on E-bay. I have LOTs more to add as time permits.
<http://search.ebay.com/_W0QQsassZrigdonj>
Joe
> 1) How unobtanium are the parts necessary to bolt the two H960 racks
> together?
IIRC, it's just 8 nuts and bolts. Or at least that's what I used to fix
the 2 racks of my 11/45 system together.
--
There are supposed to be two black filler strips, orig metal and later of
plastic, roughly .5" x 2 " x 6 ft between each rack. The one that goes on
the front has a slot to allow space for the magenta/wild rose top panels.
>From: ard at p850ug1.demon.co.uk
>
>>
>> On Thu, 7 Jul 2005, Dwight K. Elvey wrote:
>>
>> > I'm not sure how it works. The 10% number is not even
>> > close. It is more like 0.5% or so. It does take up slack
>> > over time. I think it has to do with the stretch of the
>> > belt. There is more tention on one spool than the other,
>> > making one side move a little faster than the other.
>> > The one spool getting the more stretched belt would tend
>> > to move a little faster than the side without stretch on
>> > it since it would see more effective belt movement.
>>
>> I would think that the faster spindle has a smaller diameter than the
>> slower one.
>
>Yes, but remember the belt drives the outide of the tape on the 2 spools.
>Yes, the smaller spindle will turn quicker (more revs per second), but
>to tension the tape you need to move the tape faster (more inches per
>second) on the takeup side. And I still don't see why this happens.
>
>-tony
>
Hi Tony
I'm proposing an experiment for you since I know that
you are the type that would actually try it.
Get two pulley or spools ( like from thread ) that are the
same diameter. Place these on shafts that give you
a few inches between outer edges. Get a rubber band
that is large enough to go around the two spools,
with some tension. Mark the spools with an arrow so that
you can see how fast each rotates. For convenience, spools
should be left and right.
Now place a little drag on the left spool while pulling
the rubber band from the lower span of the rubber band,
towards the left.
This would correspond to how the tapes are in the cassette.
Although, the spools are the same size, I've only done this so
that the surface speeds of the spools would match if a rigid
belt were used, similar to the tape surfaces.
As you pull the rubber band, you'll notice that the right
spool rotates noticeably faster than the left spool, even though
the rubber band is not slipping on the left spool.
This demonstrates the principle of the way the cassette
works ( or at least should ). I do hope you try it.
Dwight
Subject: Re: Take My Warehouse, Please!
>At 12:01 PM 7/8/2005, Vintage Computer Festival wrote:
> >And here are photos so you can see what you're up against:
> >
> >http://www.siconic.com/crap/Warehouse/
>
>Ah, thank you. I will rub these pictures like cool smooth stones
>against my temples when I need to reassure myself that
>"I may think I have a lot of junk, but at least I'm not as crazy as Xxxx."
I have to say, I thought that was a piss-poor collection. Seriously
unimpressed. A warehouse full of 'stuff', but there wasn't a single machine
that I couldn't *pick up*...
:-)
Mike
http://www.corestore.org
