On 8/16/17 9:38 AM, Ethan Dicks wrote:
On Tue, Aug 8, 2017 at 8:35 AM, allison via cctalk
wrote:
Note: TU58 (variant of DC100 tape) to my knowledge was never used with PDP-8
in any flavor. There is no reason why not other than no driver and it 8bit
only and the blocking is 512bytes.
I remem
On Tue, Aug 8, 2017 at 8:35 AM, allison via cctalk
wrote:
> Note: TU58 (variant of DC100 tape) to my knowledge was never used with PDP-8
> in any flavor. There is no reason why not other than no driver and it 8bit
> only and the blocking is 512bytes.
I remember a lot of discussion in PDP-8 user
>
> Date: Fri, 11 Aug 2017 17:22:58 +0100
> From: Rod Smallwood
> Subject: pdp-8/e restoration update.
>
> Hi List
>
> Well I think I've found why the RX01 is not responding.
>
> The device address (75) is not getting decoded on the controller becaus
Hi List
Well I think I've found why the RX01 is not responding.
The device address (75) is not getting decoded on the controller because
the CPU does not assert BUS I/O PAUSE L
Which it should do I think when it sees an IO instruction.
Do I have this right?
Rod Smallwood
--
Wanted
> From: Philipp Hachtmann
> The DEC stuff was designed quite wrong-insertion resistant.
> ...
> I did it. Once. It leads to impressive fireworks on many boards.
I managed to plug in an M9301 backwards, once. Luckily, most of the other
boards came through OK (I think I lost one chi
Note: TU58 (variant of DC100 tape) to my knowledge was never used with PDP-8
in any flavor. There is no reason why not other than no driver and it
8bit only
and the blocking is 512bytes.
The 8bit part is solved by storing 2 words (12bit word) to 3 bytes (24bits).
It could be quite handy as a
On Mon, Aug 7, 2017 at 5:28 PM, Rod Smallwood via cctalk <
cctalk@classiccmp.org> wrote:
>
>
> On 08/08/2017 00:01, Josh Dersch via cctalk wrote:
>
>> On 8/7/2017 3:50 PM, Rod Smallwood via cctalk wrote:
>>
>>
>>>
>>> One other thing - I have a working TU58.
>>> The two cassette drives in a box ty
On 08/08/2017 00:01, Josh Dersch via cctalk wrote:
On 8/7/2017 3:50 PM, Rod Smallwood via cctalk wrote:
On 07/08/2017 22:52, Ian S. King via cctalk wrote:
On Mon, Aug 7, 2017 at 2:40 PM, Pete Turnbull via cctalk <
cctalk@classiccmp.org> wrote:
On 07/08/2017 18:37, Rod Smallwood via cctal
I did not know of Kevin's site..
Great stuff there.
Ed#
In a message dated 8/7/2017 2:41:24 P.M. US Mountain Standard Time,
cctalk@classiccmp.org writes:
On 07/08/2017 18:37, Rod Smallwood via cctalk wrote:
> So to-morrow connect up a terminal that will do 110 baud and try an echo
>
On 8/7/2017 3:50 PM, Rod Smallwood via cctalk wrote:
On 07/08/2017 22:52, Ian S. King via cctalk wrote:
On Mon, Aug 7, 2017 at 2:40 PM, Pete Turnbull via cctalk <
cctalk@classiccmp.org> wrote:
On 07/08/2017 18:37, Rod Smallwood via cctalk wrote:
So to-morrow connect up a terminal that will
On 07/08/2017 22:52, Ian S. King via cctalk wrote:
On Mon, Aug 7, 2017 at 2:40 PM, Pete Turnbull via cctalk <
cctalk@classiccmp.org> wrote:
On 07/08/2017 18:37, Rod Smallwood via cctalk wrote:
So to-morrow connect up a terminal that will do 110 baud and try an echo
test.
Next part is inter
On Mon, Aug 7, 2017 at 2:40 PM, Pete Turnbull via cctalk <
cctalk@classiccmp.org> wrote:
> On 07/08/2017 18:37, Rod Smallwood via cctalk wrote:
>
> So to-morrow connect up a terminal that will do 110 baud and try an echo
>> test.
>>
>> Next part is interesting. There should be a way to fake a read
On 07/08/2017 18:37, Rod Smallwood via cctalk wrote:
So to-morrow connect up a terminal that will do 110 baud and try an echo
test.
Next part is interesting. There should be a way to fake a reader / punch
and feed in tape images.
There is. Look on Kevin McQuiggin's site:
http://highgate.co
On 07/08/2017 17:05, Philipp Hachtmann via cctalk wrote:
On 04.08.2017 09:24, Rod Smallwood via cctalk wrote:
Hi List
Hi Rod!
I looks like I have at last got a KK8-E CPU set to continue
getting my 8/e back running again.
It looks that you have one more set stored in my facility i
On 04.08.2017 09:24, Rod Smallwood via cctalk wrote:
Hi List
Hi Rod!
I looks like I have at last got a KK8-E CPU set to continue
getting my 8/e back running again.
It looks that you have one more set stored in my facility in Hannover!!!
I became feeling more and more bad about that.
On 04.08.2017 17:23, Doug Ingraham via cctalk wrote:
On Fri, Aug 4, 2017 at 1:24 AM, Rod Smallwood via cctalk <
cctalk@classiccmp.org> wrote:
1. Should the run light glow dimly?
Without looking at the schematics I can't tell you if they bothered to put
the resistor in there to make
it glow
On 06/08/2017 18:10, Noel Chiappa via cctalk wrote:
> From: Ian S. King
> Those keys are common across nearly all DEC machines prior to the ones
> that started using plastic keys. XX2247 is the code.
Someone on eBait is selling replicas for not wholly unreasonable amounts of
mo
> From: Ian S. King
> Those keys are common across nearly all DEC machines prior to the ones
> that started using plastic keys. XX2247 is the code.
Someone on eBait is selling replicas for not wholly unreasonable amounts of
money:
http://www.ebay.com/itm/142118132040
Noel
[cctalk@classiccmp.org]
Sent: Sunday, August 6, 2017 2:00 AM
To: Rod Smallwood; General Discussion: On-Topic and Off-Topic Posts
Subject: Re: pdp-8/e restoration.
Those keys are common across nearly all DEC machines prior to the ones that
started using plastic keys. XX2247 is the code. -- Ian
On
Those keys are common across nearly all DEC machines prior to the ones that
started using plastic keys. XX2247 is the code. -- Ian
On Sat, Aug 5, 2017 at 10:29 PM, Rod Smallwood via cctalk <
cctalk@classiccmp.org> wrote:
> Hi List!
>
> Movin right along.
>
> Programmers console now prope
Hi List!
Movin right along.
Programmers console now properly attached to light screening bar.
Front panel and bezel on. Needs a bit more work.
Not as secure or as straight as I would like.
Then there's the key lock problem.
Its in the off position and of course I don't have the key.
On 08/04/2017 05:31 PM, Rod Smallwood via cctalk wrote:
Hi Guys
Thanks for the info so far. Well I have moved on.
I now have the minimum configuration.
Programmers console, M8300,M8310,M8320,M8330,M849 and 4k
of core memory.
The M8320 is at the far end of the bus.
Well much as I f
Hi Guys
Thanks for the info so far. Well I have moved on. I now have
the minimum configuration.
Programmers console, M8300,M8310,M8320,M8330,M849 and 4k of core memory.
The M8320 is at the far end of the bus.
Well much as I feared I cant write to memory using Load Address ,
set
Yes, the 8/e has the 'keep-alive current'. The lamps are driven by an 8V
line that runs from the power supply to the programmer's panel. -- Ian
On Fri, Aug 4, 2017 at 8:23 AM, Doug Ingraham via cctalk <
cctalk@classiccmp.org> wrote:
> On Fri, Aug 4, 2017 at 1:24 AM, Rod Smallwood via cctalk <
>
On Fri, Aug 4, 2017 at 1:24 AM, Rod Smallwood via cctalk <
cctalk@classiccmp.org> wrote:
> 1. Should the run light glow dimly?
>
Without looking at the schematics I can't tell you if they bothered to put
the resistor in there to make
it glow dimly but I can tell you that it isn't necessary for th
On 08/04/2017 02:24 AM, Rod Smallwood via cctalk wrote:
Programmers console is in its slot. Bad bulbs (not LEDs) have been
replaced
Power up and all the lamps come on either bright or dim (off) except
the RUN light.
So questions:
1. Should the run light glow dimly?
Probably all lights
Hi List
I looks like I have at last got a KK8-E CPU set to continue
getting my 8/e back running again.
Rather than make mistakes first and ask for help later I thought I might
ask advice first.
The system has a working rebuilt PSU with all of the caps reformed or
replaced. Voltage
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