Re: Revive 11/34

2017-12-12 Thread william degnan via cctalk
On Dec 12, 2017 3:41 AM, "Mattis Lind via cctech" wrote: > > There has been plenty of good suggestions already. > > If I were you I would: > > 1. Check voltages from the PSU as mentioned previously. > 2. Check AC LO / DC LO signals as Bill mentioned. > 3. Strip out every

Re: Revive 11/34

2017-12-11 Thread Mattis Lind via cctalk
There has been plenty of good suggestions already. If I were you I would: 1. Check voltages from the PSU as mentioned previously. 2. Check AC LO / DC LO signals as Bill mentioned. 3. Strip out every card on the bus except of the terminator boards and the M7859 programmers console. 4. Put the

RE: Revive 11/34

2017-12-11 Thread william degnan via cctalk
> >> > >> Any suggestions as to what to try first? I may have the bus grant in backwards. I have other boards I can try. > >> For an 11/34A can one test for DC LO / AC LO? If so and you don't get the correct reading that's a show stopper right there. Remove all but the essential cards,

Re: Revive 11/34

2017-12-11 Thread william degnan via cctalk
Ray Fantini knows the 11/34 very well https://www.youtube.com/watch?v=pU8DOKVxDJ8 He helped me with UNIBUS diagnosis. I am sure you have seen this: http://bitsavers.org/pdf/dec/pdp11/1134/ I would definitely start with the power supply and work my way through the voltage regulators, etc. If you

Re: Revive 11/34

2017-12-09 Thread Noel Chiappa via cctalk
> From: Henk Gooijen > the M7859 is sort of a UNIBUS device. The (front panel) console only > communicates with the M7859. Not quite; it does _mostly_ 'do its thing' over the UNIBUS, but there are also two special lines carried across the DD11-P backplane to the CPU, 'Halt Request'

Re: Revive 11/34

2017-12-09 Thread John Welch via cctalk
I also have an 11/04 that I went and drug out.  It is configured like this: 11/04:    AAA BBB CCC DDD EEE FFF (Rear/Fans/Power Supply) 1 [M7263] (Front/Keypad/DC ON) 2 [M7847]

Re: Revive 11/34

2017-12-09 Thread JCWelch via cctalk
I do know is that they are always all 6 (or 7) on. If that is not the case, there is definitely something wrong. Van: cctech <cctech-boun...@classiccmp.org> namens John Welch via cctech <cct...@classiccmp.org> Verzonden: Saturday, December 9, 2017 12:49:01 AM Aan: Jerry Weiss; cct...@classiccmp.org On

RE: Revive 11/34

2017-12-09 Thread Henk Gooijen via cctalk
rg Onderwerp: Re: Revive 11/34 I also have an 11/04 that I went and drug out. It is configured like this: 11/04: AAA BBB CCC DDD EEE FFF (Rear/Fans/Power Supply) 1 [M7263] (Front/Keypad/DC ON) .

Fwd: Re: Revive 11/34

2017-12-09 Thread John Welch via cctalk
Update: This is the map of the machine:    AAA BBB CCC DDD EEE FFF (Rear/Fans/Power Supply) 1 [M8266] (Front/Keypad/DC ON) 2 [M8265] 3 [M9312]

Re: Re; Revive 11/34

2017-12-09 Thread Jerry Weiss via cctalk
> On Dec 9, 2017, at 8:23 AM, Noel Chiappa via cctalk > wrote: > > >> From: Jerry Weiss > > And the same for Jerry... > >> It won't seat evenly if reversed. At least that is what my scraped >> knuckles remember. > > Nope, they go in quite fine the wrong way around;

RE: Revive 11/34

2017-12-09 Thread Henk Gooijen via cctalk
cctalk <cctalk@classiccmp.org> Verzonden: Saturday, December 9, 2017 5:15:18 PM Aan: cctalk@classiccmp.org CC: j...@mercury.lcs.mit.edu Onderwerp: Re: Revive 11/34 > From: John Welch > Can you give me a refresher on how to tell which slots are cut? I > remember having to

Re: Revive 11/34

2017-12-09 Thread Noel Chiappa via cctalk
> From: John Welch > Can you give me a refresher on how to tell which slots are cut? I > remember having to turn the chassis over and looking for a particular > wire Yeah; you can use the G7273 as a 'crib', since it has the NPG jumper on it. That jumper goes from CA1 to CB1:

Re; Revive 11/34

2017-12-09 Thread Noel Chiappa via cctalk
> From: Henk Gooijen A few comments to you about Henk's points: > Standing in front of the 11/34 processor box (looking at the console), > slot number 1 is at the right side. That's for the 10-1/2" box; the 5-1/4" is different. Which is this? > Each slot has 6 positions.

Re: Revive 11/34

2017-12-08 Thread Jerry Weiss via cctalk
> On 12/8/2017 3:50 PM, Jerry Weiss wrote: >> On Dec 8, 2017, at 2:25 PM, John Welch via cctech >> wrote: >> >>> I am reviving an 11/34. Cards are: >>> >>> Back/Fans [M8266] Front of machine where keypad is. >>> [M8265] >>> [M9312]

Re: Revive 11/34

2017-12-08 Thread Jerry Weiss via cctalk
On Dec 8, 2017, at 2:25 PM, John Welch via cctech wrote: > > I am reviving an 11/34. Cards are: > > Back/Fans [M8266] Front of machine where keypad is. > > [M8265] > > [M9312] [M7859] > > [M7762] > >

RE: Revive 11/34

2017-12-08 Thread Henk Gooijen via cctalk
Van: John Welch via cctech Verzonden: vrijdag 8 december 2017 21:25 Aan: cct...@classiccmp.org Onderwerp: Revive 11/34 I am reviving an 11/34. Cards are: Back/Fans [M8266] Front of machine where keypad is.