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  • MattisLind's Avatar
    October 18th, 2018, 11:59 AM
    MattisLind replied to a thread Trying to create TU58 image in DEC
    Maybe this way too obvious: Did you detach the emulated TU58 in SimH? It is written when detaching.
    4 replies | 98 view(s)
  • MattisLind's Avatar
    October 16th, 2018, 12:21 PM
    MattisLind replied to a thread Newbie MicroVAX 2000 owner in DEC
    I have put some useful info here. A good manual is the technical manual. Study pages 3-131 and 3-234. They cover the use of the printer port as...
    2 replies | 127 view(s)
  • m_thompson's Avatar
    October 11th, 2018, 08:09 AM
    Mine was a lot more difficult to get running. One of the delay lines that was added by DEC as an ECO was ripped off the PCB. Vince gave me a flipchip...
    46 replies | 4035 view(s)
  • m_thompson's Avatar
    October 4th, 2018, 03:13 PM
    m_thompson replied to a thread Document scanning in DEC
    Vince has added schematics that I sent him, so I am sure that he would like to have copies of yours. I think that the documents are easier to use...
    5 replies | 331 view(s)
  • MattisLind's Avatar
    October 4th, 2018, 10:53 AM
    MattisLind replied to a thread Document scanning in DEC
    Here is a PDF with schematics for A704, rev C, A502 (I misread it as A302) rev C, A 603 rev B and A121 rev B. The A502 is already on Vincents page...
    5 replies | 331 view(s)
  • m_thompson's Avatar
    October 2nd, 2018, 08:14 AM
    m_thompson replied to a thread REMEX Paper Tape reader in DEC
    All of my toys are in my cellar. The dehumidifier keeps it 40%-60% during the summer, and it will go below 40% in the winter. In the summer it rarely...
    34 replies | 1308 view(s)
  • m_thompson's Avatar
    October 2nd, 2018, 03:47 AM
    m_thompson replied to a thread REMEX Paper Tape reader in DEC
    In getting and keeping an 8/I and a PDP-12 running we have replaced LOTS of 7474 ICs, and quite a few 7400, 7440, 7438. We have several tubes of new...
    34 replies | 1308 view(s)
  • m_thompson's Avatar
    October 1st, 2018, 03:49 AM
    After you clean the heads, you can manually load them to make sure that nothing bad happens. The maintenance manual shows some jumpers that you can...
    46 replies | 4035 view(s)
  • m_thompson's Avatar
    September 26th, 2018, 03:35 AM
    m_thompson replied to a thread PDP Industrial Design in DEC
    You could also try some of the DEC groups on LinkedIn and Facebook.
    3 replies | 276 view(s)
  • MattisLind's Avatar
    September 25th, 2018, 11:21 AM
    I have some kind of IBM MCA 3270 board available for the cost of shipping from Sweden. IBM P/N 26F0191. Have no way of testing it, but it was pulled...
    0 replies | 74 view(s)
  • m_thompson's Avatar
    September 24th, 2018, 12:51 PM
    The RICM has one, http://www.ricomputermuseum.org/Home/equipment/data-general-aviion It hasn't been powered on in many years.
    11 replies | 1526 view(s)
  • MattisLind's Avatar
    September 24th, 2018, 02:57 AM
    It should be possible to get into ODT without RAM. Is the startup jumpers set to HALT or BOOT from 173000? I once had a SLU with a bad UART. It...
    10 replies | 616 view(s)
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