On 30/12/2016 07:20, Pontus Pihlgren wrote:
On Fri, Dec 30, 2016 at 01:04:57AM +, Rod Smallwood wrote:
Hi Guys
I have had a quick word with the girls down at the silk screen
shop.
Banner panels 18 1/2 by 3 5/16 silk screened on 1mm Aluminum look to be
doable
I don't know h
On Fri, Dec 30, 2016 at 01:04:57AM +, Rod Smallwood wrote:
> Hi Guys
>
> I have had a quick word with the girls down at the silk screen
> shop.
>
> Banner panels 18 1/2 by 3 5/16 silk screened on 1mm Aluminum look to be
> doable
>
> I don't know how many different types there we
On Thu, Dec 29, 2016 at 11:51:27PM -0600, Jon Elson wrote:
> There were instructions that would copy a whole long line of data to
> the short lines so that these could be accessed every 4 word times,
> instead of having to wait a full drum revolution for the next word.
Yeah, I had forgotten about
On Fri, Dec 30, 2016 at 12:37:00AM -0500, Evan Koblentz wrote:
> There were 500 units made.
Hmm ... I remember from the old days that it was in the low 200s.
> We hope to restore it one of these days.
Well let me know if I can help. In the new year one of my tasks is
to dust off the G-15 web si
On Fri, Dec 30, 2016 at 01:02:50AM -0500, Evan Koblentz wrote:
> Yes. When museum visitors ask, "What is its clock speed?," I reply,
> "Something like a few hundred RPM." :)
OK, try again. "29msec cycle time".
Look ... it was nearly 50 years ago, ok?
mcl
On Fri, Dec 30, 2016 at 01:02:50AM -0500, Evan Koblentz wrote:
> Yes. When museum visitors ask, "What is its clock speed?," I reply,
> "Something like a few hundred RPM." :)
Ancient dusty brain cells say "29usec cycle time".
mcl
I know it's getting off-topic, but anyone who wants to see a G-15 is
welcome to come visit the Vintage Computer Federation museum in New
Jersey. There were 500 units made. The one here is believed to be number
three. :) We hope to restore it one of these days.
Ouch! That means it runs one instruction per revolution of the drum?
Yes. When museum visitors ask, "What is its clock speed?," I reply,
"Something like a few hundred RPM." :)
(I don't actually know how fast the motor spins, but my reply gets the
point across.)
On 12/29/2016 10:04 PM, Noel Chiappa wrote:
> From: Cory Heisterkamp
> this is likely as close as I'll ever come to having a first generation
> machine
Dude, as far as I'm concerned, if it uses some sort of circulating memory for
main memory (either delay line or drum), it's pret
On Thu, 12/29/16, Noel Chiappa wrote:
> Interesting factoid about the Bendix G-15: it was designed with the help of
> one of the ACE people (Harry Huskey), and is basically a re-packaged ACE with
> drum instead of delay lines. There's an interesting article by Huskey himself
> in "Alan Turing's A
> From: Cory Heisterkamp
> this is likely as close as I'll ever come to having a first generation
> machine
Dude, as far as I'm concerned, if it uses some sort of circulating memory for
main memory (either delay line or drum), it's pretty much first generation (of
course, it all depen
On Dec 28, 2016, at 4:16 PM, jim stephens wrote:
>
> On 12/28/2016 8:38 AM, Cory Heisterkamp wrote:
>>
>> Guys, thanks for all the feedback. A challenge? Absolutely. But this is
>> likely as close as I'll ever come to having a first generation machine,
>> something unfathomable to me as a kid
Hi Guys
I have had a quick word with the girls down at the silk
screen shop.
Banner panels 18 1/2 by 3 5/16 silk screened on 1mm Aluminum look to be
doable
I don't know how many different types there were.
Regardless of if you need a replacement and you have not sent me pictur
> From: Lars Brinkhoff
>
> This document says MIT's Lab for Nuclear Sience was busy working with
> their PDP-6 in early 1970. So that could not be the used machine the
> DynaMod group got in late 1969. That is, if those dates are accurate.
>
> http://cds.cern.ch/record/862545/files/233.pdf
The
On Tue, Dec 20, 2016 at 10:56 AM, Ethan Dicks wrote:
> On Mon, Dec 19, 2016 at 10:10 PM, Mark J. Blair wrote:
> > http://www.downloads.reactivemicro.com/Public/
> Apple%20II%20Items/Hardware/Apple_II_Workstation_Card/
> Pics/Apple%20II%20Workstation%20Card%20-%20Front.jpg
>
> Looks like one just
On Thu, Dec 29, 2016 at 6:24 AM, Rick Murphy wrote:
> You could verify by writing a simple toggle-in that does the skip to test:
> 0200/ 6661 - skip on the flag
> 0201/ 7402 - halt if it doesn't skip
> 0202/ 6662 - clear the flag
> 0203/ 6661 - did that clear it?
> 0204/ 7402 - yes
> 0205/ 7402
This document says MIT's Lab for Nuclear Sience was busy working with
their PDP-6 in early 1970. So that could not be the used machine the
DynaMod group got in late 1969. That is, if those dates are accurate.
http://cds.cern.ch/record/862545/files/233.pdf
On 12/29/2016 2:42 AM, Vincent Slyngstad wrote:
From: Charles Dickman: Wednesday, December 28, 2016 7:43 PM
What happens when a PDP8/e executes an IOT to a non-existent device?
My PDP8/e is skipping when it executes a printer flag test for a
device that is not present.
IOT instructions for non
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