Re: pdp-8/e restoration.

2017-08-16 Thread allison via cctalk
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

Re: pdp-8/e restoration.

2017-08-16 Thread Ethan Dicks via cctalk
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

Re: pdp-8/e restoration update.

2017-08-12 Thread Michael Thompson via cctalk
> > 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 because > the

Re: pdp-8/e restoration.

2017-08-09 Thread Noel Chiappa via cctalk
> 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

Re: pdp-8/e restoration.

2017-08-08 Thread allison via cctalk
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

Re: pdp-8/e restoration.

2017-08-07 Thread Ian S. King via cctalk
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

Re: pdp-8/e restoration.

2017-08-07 Thread Ed via cctalk
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

Re: pdp-8/e restoration.

2017-08-07 Thread Josh Dersch via cctalk
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

Re: pdp-8/e restoration.

2017-08-07 Thread Rod Smallwood via cctalk
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

Re: pdp-8/e restoration.

2017-08-07 Thread Ian S. King via cctalk
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

Re: pdp-8/e restoration.

2017-08-07 Thread Pete Turnbull via cctalk
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:

Re: pdp-8/e restoration.

2017-08-07 Thread Rod Smallwood via cctalk
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

Re: pdp-8/e restoration.

2017-08-07 Thread Philipp Hachtmann via cctalk
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

Re: pdp-8/e restoration.

2017-08-07 Thread Philipp Hachtmann via cctalk
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

Re: pdp-8/e restoration.

2017-08-06 Thread Rod Smallwood via cctalk
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

Re: pdp-8/e restoration.

2017-08-06 Thread Noel Chiappa via cctalk
> 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

RE: pdp-8/e restoration.

2017-08-06 Thread Bill Gunshannon via cctalk
[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

Re: pdp-8/e restoration the next step.

2017-08-04 Thread Jon Elson via cctalk
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

Re: pdp-8/e restoration.

2017-08-04 Thread Ian S. King via cctalk
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 <

Re: pdp-8/e restoration.

2017-08-04 Thread Doug Ingraham 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

Re: pdp-8/e restoration.

2017-08-04 Thread Jon Elson via cctalk
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