Hi,
I grew up on a PDP8-E. Amazing what ran on a 4K Word (Bank Swapping to 32K
Words) 12 bit machine. Wow was I in heaven when the Dec Tape was replaced
with a RK05 drive for about 2MB. And about $10K.
Bob K.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Ed Popielarski
Sent: Friday, May 24, 2013 11:16 AM
To: [log in to unmask]
Subject: Re: [TN] NTC: Pat Goodyear "Whatzit" Photos
The Bridgeport Series 2 CNC milling machine had a PDP8 platform with paper
tape. I had one in my machine shop which finally became unstable around
2001, at which time I swapped out the CPU & stepper drivers for something a
little more modern. Needless to say, the ole' PDP8 hung in there until it
died a dignified demise. http://pdp8.co.uk/files/2009/07/pdp-8l.jpg
Ed Popielarski
Engineering Manager
970 NE 21st Ct.
Oak Harbor, Wa. 98277
Ph: 360-675-1322
Fx: 206-624-0965
Cl: 949-581-6601
https://maps.google.com/maps/myplaces?hl=en&ll=48.315753,-122.643578&spn=0.0
11188,0.033023&ctz=420&t=m&z=16&iwloc=A
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Nutting, Phil
Sent: Friday, May 24, 2013 6:04 AM
To: [log in to unmask]
Subject: Re: [TN] NTC: Pat Goodyear "Whatzit" Photos
And the PDP8 was the size of two refrigerators.
So many toggle switches and lights!
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Larry Dzaugis
Sent: Thursday, May 23, 2013 7:39 PM
To: [log in to unmask]
Subject: Re: [TN] NTC: Pat Goodyear "Whatzit" Photos
I programmed on a DEC PDP 8.
8K of core memory.
It was a general purpose mini computer.
Machine was a big deal in that it brought computers out on the shop floor.
Had to toggle in boot up program and then binary loader with punch tape, 20
minutes boot and load.
The test Engineers at DEC and Data General would order competitors machines
for production as they were sold rather than allocated internally. The PO
usually was booted and a machine provided. Wang, Prime, Nixdorf and Apollo
were in a 40 mile radius as well as others. All grew and died like weeds.
Company modified the PDP 8 to run tape controlled NC mills to produce thread
rolling dies with only 8 parameters entered on tape. Early CNC.
On Thu, May 23, 2013 at 6:03 PM, Ahne Oosterhof <[log in to unmask]> wrote:
> Uhhhh?
>
> From the other responses you should know by now that these are ferrite
> beads with wires running through them, forming a memory board. Small
> amount of memory / lot of space / hard to build / expensive. Unlike
> today's memory where we are counting gigabits for little money.
>
> Can you imagine taking a piece of copper wire, making it as straight
> as possible and shoving it through each row and column of these little
> beads that were manually placed in a form? It takes time and patience!
>
> Ahne.
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Eva J
> Sent: 23 May, 2013 13:55
> To: [log in to unmask]
> Subject: Re: [TN] NTC: Pat Goodyear "Whatzit" Photos
>
> EMI shielding material?
>
>
> On Thu, May 23, 2013 at 4:44 PM, Ahne Oosterhof <[log in to unmask]>
> wrote:
>
> > I remember seeing girls "weaving" those things when I worked at
> > Philips in the late 60-s!
> > Interesting to see them accomplish that, but not my cup of tea.
> >
> > Ahne.
> >
> > -----Original Message-----
> > From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory
> > Sent: 23 May, 2013 13:04
> > To: [log in to unmask]
> > Subject: Re: [TN] NTC: Pat Goodyear "Whatzit" Photos
> >
> > Quoting Pat from the email he sent to me with the pictures:
> >
> > "Steve I am sending a couple of jpgs of core, can you post them with
> > what-is-it titles? See if we can stir up some old memories.
> > These are from a Westinghouse Prodac 250, I think they are either 2
> > - 1K memory cores, or possibly 4 bit x 1k.
> > How would you like to sit and lace those. I have re soldered some
> > that the wires were broke during cleaning.
> >
> > I grabbed this one when they scrapped the machine 20 years ago, it
> > is dated 1971, I was a college freshman learning machine code
> > programming, Fortran and Cobol, ah how times have changed..."
> >
> > Steve
> >
> > -----Original Message-----
> > From: TechNet [mailto:[log in to unmask]] On Behalf Of Steve Gregory
> > Sent: Thursday, May 23, 2013 11:02 AM
> > To: [log in to unmask]
> > Subject: [TN] NTC: Pat Goodyear "Whatzit" Photos
> >
> > Hey All,
> >
> >
> >
> > Pat Goodyear is probably unsubscribed now :o( but he sent me some
> > photos on Tuesday to post on my page. From his email:
> >
> >
> >
> > Steve,
> >
> > I am sending a couple of jpgs of XXXX, can you post them with
> > what-is-it titles? See if we can stir up some old memories....
> >
> >
> >
> > So I have posted them. Anybody have any ideas of what this is?
> >
> >
> >
> > http://stevezeva.homestead.com/Whatzit1.JPG
> >
> >
> >
> > http://stevezeva.homestead.com/Whatzit2.JPG
> >
> >
> >
> > http://stevezeva.homestead.com/Whatzit3.JPG
> >
> >
> >
> > He let me know what it is. I'll keep that to myself for a while to
> > see if anybody really knows....
> >
> >
> >
> > Steve
> >
> >
> >
> >
> > ____________________________________________________________________
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