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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 | 132 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...
    3 replies | 162 view(s)
  • jackrubin's Avatar
    October 13th, 2018, 04:57 AM
    Here's how the pros do it - https://www.youtube.com/watch?v=BFqNP8VqoPs Strange Parts has many cool videos about manufacturing in China - worth a...
    16 replies | 850 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 | 4146 view(s)
  • jackrubin's Avatar
    October 9th, 2018, 02:49 PM
    jackrubin replied to a thread PDP8/m fix before use... in DEC
    Lyle just replied to me and told me that while he would hope to (someday) update GTTY, for now he runs it using DOSBox from both Windows and Linux...
    14 replies | 722 view(s)
  • jackrubin's Avatar
    October 9th, 2018, 12:22 PM
    jackrubin replied to a thread PDP8/m fix before use... in DEC
    Just to be clear, Lyle Bickley wrote GTTY - glass teletype - using Dave Dunfield's micro-C compiler. It's a nice lightweight terminal program for the...
    14 replies | 722 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 | 354 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 | 354 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...
    35 replies | 1499 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...
    35 replies | 1499 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 | 4146 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 | 299 view(s)
  • jackrubin's Avatar
    September 25th, 2018, 07:47 PM
    jackrubin replied to a thread OS/8 programming overview? in DEC
    How about this? http://bitsavers.trailing-edge.com/pdf/dec/pdp8/os8/OS8_Handbook_Apr1974.pdf You'll definitely be chewing on this one for a...
    12 replies | 688 view(s)
  • jackrubin's Avatar
    September 25th, 2018, 06:32 PM
    jackrubin replied to a thread OS/8 programming overview? in DEC
    Here's the place to start - http://bitsavers.trailing-edge.com/pdf/dec/pdp8/handbooks/IntroToProgramming1969.pdf ...
    12 replies | 688 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 | 78 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 | 1551 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 | 651 view(s)
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About m_thompson

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About m_thompson
Biography:
Volunteer at the RICM. Working on a PDP-12, PDP-8/I, 8/L, 8/e, PDP-9, 11/34a, and 11/44.
Location:
Rhode Island
Interests:
Vintage minicomputers.
Occupation:
Engineer

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Member of the Rhode Island Computer Museum
http://www.ricomputermuseum.org

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