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  • bqt's Avatar
    October 19th, 2020, 11:07 AM
    bqt replied to a thread MM11-E or MM11-F (wanted) in DEC
    All core memories I've ever seen for the Unibus have just been a hex board with everything on it, and it just plugged into the normal Unibus...
    8 replies | 272 view(s)
  • bqt's Avatar
    October 19th, 2020, 10:51 AM
    bqt replied to a thread PDP-11/53 Console Problems in DEC
    The receiver converter that Mattis mentioned would be one thing I would check too. I bet it's a 1488/1489 combo. They do break from time to time....
    8 replies | 159 view(s)
  • bqt's Avatar
    October 16th, 2020, 11:44 PM
    bqt replied to a thread VAX Haul... in DEC
    Two (slightly irrelevant) comments only... 1. The LN03 do not understand Postscript. For that you would need the LN03R Script Printer. (The LN03...
    79 replies | 2859 view(s)
  • bqt's Avatar
    October 16th, 2020, 12:49 AM
    bqt replied to a thread VAX Haul... in DEC
    Oh, c'mon. M+ SYSGEN is easy and smooth. 11M SYSGEN is the tricky one. ;-)
    79 replies | 2859 view(s)
  • bqt's Avatar
    October 14th, 2020, 01:54 PM
    bqt replied to a thread VAX Haul... in DEC
    You know it's all available online... http://h30266.www3.hpe.com/odl/vax/opsys/vmsos73/vmsos73/6630/6630pro.html is for V7.3, but standalone stuff...
    79 replies | 2859 view(s)
  • bqt's Avatar
    October 14th, 2020, 09:51 AM
    bqt replied to a thread PDP-8e f m front panel pcb... in DEC
    And just to clarify, if anyone don't know. The 8/M and 8/F have the same front panel as the 8/E, except for the change to LEDs. I never tested, but...
    4 replies | 161 view(s)
  • bqt's Avatar
    October 12th, 2020, 01:10 AM
    bqt replied to a thread Found my old PDP 11/24 in DEC
    Thanks for the pictures. So it is an 11/24, but just the CPU box. As others suggested, it would be good to see what, if any cards, are installed....
    29 replies | 1292 view(s)
  • bqt's Avatar
    October 9th, 2020, 07:35 AM
    bqt replied to a thread Found my old PDP 11/24 in DEC
    11/24 in a box under stuff in the garage? Are we talking about just a CPU box here, or is it some micro-11 and not an 11/24? The 11/24 normally came...
    29 replies | 1292 view(s)
  • bqt's Avatar
    October 7th, 2020, 10:49 AM
    bqt replied to a thread VAX Haul... in DEC
    As others said - mouse test failure. More specifically transfer timeout. So I would guess that just means there was no mouse that responded to some...
    79 replies | 2859 view(s)
  • bqt's Avatar
    October 6th, 2020, 09:03 AM
    bqt replied to a thread VAX Haul... in DEC
    I suspect it also reads back and verify that all blocks are good. And I think formatting takes more time than just simple reads or writes.
    79 replies | 2859 view(s)
  • bqt's Avatar
    October 6th, 2020, 09:02 AM
    bqt replied to a thread VAX Haul... in DEC
    Aha. Thanks. So that's reporting that the Brooktree DAC is the problem, and more specifically the Brooktree Analog Compare. That's as much...
    79 replies | 2859 view(s)
  • bqt's Avatar
    October 5th, 2020, 12:29 PM
    bqt replied to a thread VAX Haul... in DEC
    SHOW ERROR after the diagnostics complete could help pinpoint what the error is. Although, in the end, I suspect it won't make much difference. If...
    79 replies | 2859 view(s)
  • bqt's Avatar
    October 3rd, 2020, 11:27 AM
    bqt replied to a thread VAX Haul... in DEC
    Speaking of LCSPX error, could you give the output from SHOW ERROR after it has failed the self test?
    79 replies | 2859 view(s)
  • bqt's Avatar
    October 1st, 2020, 08:02 AM
    bqt replied to a thread MicroVAX 3300 TK70/50 Tapes in DEC
    It's not that black and white. The initial boot request from the firmware is using MOP. But there are MOP servers for Unix. Once you've downloaded...
    27 replies | 980 view(s)
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About bqt

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About bqt
Location:
Zurich, CH
Interests:
Old computers
Occupation:
Computers

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