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  • Lou - N2MIY's Avatar
    Yesterday, 06:26 PM
    Lou - N2MIY replied to a thread H960 rack in DEC
    There are a lot of dimensions on the diagrams in the H950 section in the Logic Handbooks. I am looking at the 1973-74 edition on bitsavers. The H960...
    3 replies | 72 view(s)
  • m_thompson's Avatar
    Yesterday, 07:54 AM
    Don't forget that there are two versions of the 8/e front panel. Lou's is the early version where the rotary switch turns a full 180 degrees. Mine...
    4 replies | 144 view(s)
  • Lou - N2MIY's Avatar
    Yesterday, 04:43 AM
    I think mine came out pretty good as well. See here for a comparison: http://www.vcfed.org/forum/album.php?albumid=43&attachmentid=30402 The...
    4 replies | 144 view(s)
  • m_thompson's Avatar
    Yesterday, 03:58 AM
    You can try rodsmallwood52@btinternet.com I bought an 8/e front panel from him. It need a little adjusting to the power switch hole, but otherwise...
    4 replies | 144 view(s)
  • m_thompson's Avatar
    October 19th, 2019, 01:36 PM
    m_thompson replied to a thread PDP-9 at the RICM in DEC
    Maybe we can make a video if it booting tomorrow.
    111 replies | 15225 view(s)
  • m_thompson's Avatar
    October 19th, 2019, 11:59 AM
    m_thompson replied to a thread PDP-9 at the RICM in DEC
    We connected an ASR33 Teletype to the console port on the PDP-9 today. Much more fun than the VT220.
    111 replies | 15225 view(s)
  • jackrubin's Avatar
    October 18th, 2019, 08:33 PM
    jackrubin replied to a thread PDP-9 at the RICM in DEC
    Good stuff!
    111 replies | 15225 view(s)
  • m_thompson's Avatar
    October 18th, 2019, 04:14 PM
    m_thompson replied to a thread PDP-9 at the RICM in DEC
    I modified resttd8e to work with PDP-9 SIMH DECtape images and was able to make physical DECtapes. Today we got the PDP-9 to boot the ADSS V4E...
    111 replies | 15225 view(s)
  • jackrubin's Avatar
    October 16th, 2019, 11:43 AM
    Thanks for sharing this - it seems like VCF-Berlin gets better and better. You can't have too many PDP-8's!
    2 replies | 139 view(s)
  • jackrubin's Avatar
    October 16th, 2019, 09:08 AM
    jackrubin replied to a thread VCFMW "Family of 8" playlist in DEC
    Thanks for taking the initiative, Richard - a rich and rewarding resource! :>)
    1 replies | 126 view(s)
  • jackrubin's Avatar
    October 15th, 2019, 06:58 AM
    Palbart.exe runs from the command line on a Windows machine, at least through Win7. I haven't tried it on Win10. Read the docs at Mike's link above....
    5 replies | 196 view(s)
  • m_thompson's Avatar
    October 14th, 2019, 10:09 AM
    Palbart https://www.pdp8online.com/ftp/software/palbart/ You can run the binary on a real PDP-8 or under SIMH.
    5 replies | 196 view(s)
  • jackrubin's Avatar
    October 14th, 2019, 09:14 AM
    Wait, it gets better. The author presented at VCF-Berlin (on 13 October - yesterday!) and the video of his talk is already online - in English -...
    3 replies | 134 view(s)
  • jackrubin's Avatar
    October 14th, 2019, 07:19 AM
    Oscar Vermeulen just shared an interesting project on the pidp-8 list - a B cross-compiler that emits native PAL assembler code -...
    3 replies | 134 view(s)
  • m_thompson's Avatar
    October 13th, 2019, 01:22 PM
    m_thompson replied to a thread PDP-9 at the RICM in DEC
    I got the PDP-9 to format DECtapes today. The clock that generates the timing track was running a little slow, so it ran off the end of the tape...
    111 replies | 15225 view(s)
  • jackrubin's Avatar
    October 11th, 2019, 08:23 PM
    jackrubin replied to a thread PUTR OS8 file size limit? in DEC
    Welcome to SQUISH! This is invokes a PIP option to essentially copy a disk to itself, consolidating empty space in the process. Check it out in the...
    14 replies | 481 view(s)
  • wa2flq's Avatar
    October 9th, 2019, 06:26 PM
    I believe it is an MPSU05 (see page 58 of MP00633_VT100_Schematic_Feb82_text).pdf and drives most of the HV in the VT100. It is a Power Bipolar...
    16 replies | 1885 view(s)
  • Ed Groenenberg's Avatar
    October 8th, 2019, 10:36 PM
    Ed Groenenberg replied to a thread Pdp1123 rl02 question in DEC
    If the 'DIR DL0:' does cause the 'READY' light to flikker, it means the drive is actually been accessed. Try the dump uyility to see if there...
    5 replies | 305 view(s)
  • m_thompson's Avatar
    October 8th, 2019, 09:00 AM
    The Rhode Island Computer Museum has an Integrated Server 3006 which is very similar to the Multiprise 3000. We could use any I/O cards that you...
    5 replies | 256 view(s)
  • m_thompson's Avatar
    October 8th, 2019, 08:54 AM
    m_thompson replied to a thread PUTR OS8 file size limit? in DEC
    Could you use SIMH to read the PAL source like it was a paper tape image and save it on the diskette image?
    14 replies | 481 view(s)
  • wa2flq's Avatar
    October 7th, 2019, 07:11 PM
    wa2flq replied to a thread Pdp1123 rl02 question in DEC
    I have the same gear, though I haven't had to do much in the way of repair on mine (so far). XXDP+ does have a good set of programs to support the...
    5 replies | 305 view(s)
  • jackrubin's Avatar
    October 7th, 2019, 06:21 PM
    The summer Vintage shows are all over now and it's time to get back to cold-weather projects. I exhibited the LD-12 at VCF Midwest but unfortunately...
    223 replies | 22340 view(s)
  • m_thompson's Avatar
    October 6th, 2019, 05:33 AM
    m_thompson replied to a thread PDP-9 at the RICM in DEC
    BQT, I used PIP-10 to extract files from a PDP-10 KA10 DECtape a few weeks ago. I should look at the code.
    111 replies | 15225 view(s)
  • Ed Groenenberg's Avatar
    October 5th, 2019, 07:39 AM
    Thanks :) This is how it looks inside the model 32.
    23 replies | 1325 view(s)
  • Ed Groenenberg's Avatar
    October 4th, 2019, 01:18 PM
    Oh, just have a look on ebay, there is where I got mine. JNGE seems to be a reliable brand. Just search for 'pure sine inverter 110V'. Usually the...
    23 replies | 1325 view(s)
  • m_thompson's Avatar
    October 3rd, 2019, 03:50 AM
    m_thompson replied to a thread PDP-9 at the RICM in DEC
    I am learning way more than I wanted about dumprest for the PDP-9. The dumptd8e_18 that is on that is on Dave's WWW page does not fiddle with the...
    111 replies | 15225 view(s)
  • Ed Groenenberg's Avatar
    October 2nd, 2019, 11:05 PM
    Indeed this works. I have an model 32 telext (60Hz) while our line frequency is 50Hz. I use a powerbrick from a server (12V@70Amps) and feed that...
    23 replies | 1325 view(s)
  • Silent700's Avatar
    October 1st, 2019, 06:45 PM
    The videos are up! The last of the VCF Midwest 14 Talks videos, shot in glorious 4K and lovingly edited by the intrepid Trixter, have been...
    4 replies | 311 view(s)
  • m_thompson's Avatar
    September 30th, 2019, 03:55 AM
    m_thompson replied to a thread PDP-9 at the RICM in DEC
    We tried to format a DECtape on the PDP-9 using the paper tape that Mattis punched for us. The formatter program loads and runs, but doesn't like the...
    111 replies | 15225 view(s)
  • m_thompson's Avatar
    September 29th, 2019, 08:07 AM
    The MEMORY ADDRESS test is supplied in RIM format and uses a very limited set of instructions.
    5 replies | 273 view(s)
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About jackrubin

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About jackrubin
Biography:
Started computing in 1959 (GENIAC), still trying to figure things out
Location:
Wilmette, IL (north of Chicago)
Interests:
CP/M, PDP8 & 11, RTTY
Occupation:
Stay-at-home computer dad

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Recent Entries

DEC extender adapter for over-the-top OMNIBUS boards

by jackrubin on June 30th, 2017 at 01:50 PM
Quote Originally Posted by jackrubin View Post
Revision 2 just arrived - smaller board, no vias. Based on how hard I had to smack the connectors with the hammer, I've opened the holes up a little in the next batch. First cable set goes out for testing tomorrow.





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