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  1. Replies
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    From the technical manual I have identified that...

    From the technical manual I have identified that the PUSART P8251A controls the keyboard along with a line driver and receiver, I haven't found the circuit diagram for the 100A but I'm guessing that...
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    1,663

    I checked the 12v with an oscilloscope and I'm...

    I checked the 12v with an oscilloscope and I'm actually measuring 11.96v, very little noise. Is this voltage to low? I don't see any adjustment in the technical manual. The fact that I can get into...
  3. Thread: DEC Rainbow 100+

    by PG31
    Replies
    2
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    355

    I have the same issue now that I can see the...

    I have the same issue now that I can see the error after removing the CRT cataracts. Looking at the circuit diagram for the VR201 it doesn't have a lot to fail, So I supect something in the Rainbow...
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    I'm getting keyboard error, its not the keyboard...

    I'm getting keyboard error, its not the keyboard or the UK ROM as I've tried a US ROM and keyboard. Oddly enough if I press setup that works. Any ideas where to start? I have the VR201 circuit...
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    I decided to try gnupublic's method but instead...

    I decided to try gnupublic's method but instead of nylon I use a guitar string, well two in fact as one snapped.(0.11 gauge Picato but I guess Ernie Ball's or Fender may work;). ***Safety first***...
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    The Rainbow came with a Microline 83a, manuals...

    The Rainbow came with a Microline 83a, manuals and box of very old fan fold paper. I'm not interested in the printer. The belts look ok, probably needs a new ribbon a clean and oiling etc but looks...
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    1,218

    The seller landed on his feet, looks like a house...

    The seller landed on his feet, looks like a house clearance company.
  8. Thread: DEC Rainbow 100+

    by PG31
    Replies
    2
    Views
    355

    I think I may have the same issue as yourself. At...

    I think I may have the same issue as yourself. At present I can't read the message on the screen apart from the word keyboard until I can find the time to remove the cataracts.
  9. Replies
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    1,663

    I checked over the PSU and powered the Rainbow up...

    I checked over the PSU and powered the Rainbow up with nothing connected to PSU, fan runs ok and voltages appear ok, reconnected internal cables and powered up, Rainbow goes through selftest but I...
  10. Replies
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    1,663

    Collected the Rainbow today during a business...

    Collected the Rainbow today during a business trip, it has several original 5 1/4 floppies and manuals. Haven't had time to go through the stuff. It'll all be in boot of my car until the weekend....
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    Brilliant, some great advice here. Thanks. I will...

    Brilliant, some great advice here. Thanks. I will be collecting the rainbow week after next. I'll update on my progress then.
  12. Replies
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    New to me Rainbow 100A and VR201

    I have just purchased (won) a Rainbow 100A in box with VR201 screen, keyboard, software and a printer. I have yet to collect the item. I have never used or seen one of these as I was still in junior...
  13. Thread: MicroVAX 3300

    by PG31
    Replies
    6
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    743

    Nice find, I believe the cabinet is a BA215....

    Nice find, I believe the cabinet is a BA215. There is also and expansion cabinet that looks the same called R215F that can house more RF disks.
    Assuming your 3300 is in BA215 then checkout page 12...
  14. Replies
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    6,238

    Hey Silver, Can you list the Q bus cards you have...

    Hey Silver, Can you list the Q bus cards you have please? I will be in Bracknell on 16th Julys so would be able to collect. Thanks.
  15. Replies
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    The async card with both fiber and copper that I...

    The async card with both fiber and copper that I have is 12005-60012. I have the fiber cable but no terminal, its a specific HP terminal. I don't have the copper cable so can't use this card. The 8...
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    7,491

    The backplane connectors for the A900 CPU card...

    The backplane connectors for the A900 CPU card set are high density connectors and each card goes in a specific slot on the right hand side of the cage. The first card slot on the right is for an I/O...
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    I have my console connected via the 8 channel mux...

    I have my console connected via the 8 channel mux and 8 channel breakout board. I also have a single async card and fiber cable but don't have a terminal that supports this connection, there is also...
  18. Thread: QBUS SCSI Choices

    by PG31
    Replies
    4
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    496

    Hi, I have used both a UC07 and CMD CQD in my...

    Hi, I have used both a UC07 and CMD CQD in my 11/53. Both work well with SCSI2SD. I currently use a CMD CQD in my LSI-11/02 in BA11-VA running RT11. I bought the S-Box handle CMD CQD card because it...
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    The M8047 MXV11-AA in your photographs has memory...

    The M8047 MXV11-AA in your photographs has memory and two serial line units. This may be configured for console, check the wire links. The second SLU can be connected to your PC to run one of the...
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    Wow, cool project. well done.

    Wow, cool project. well done.
  21. I missed one from my post reply and it is to late...

    I missed one from my post reply and it is to late to edit,

    CardKey. card swipe building access systems, seen quite a few over the years. Mainly 11/73 in a Dyna Five enclosure.
  22. I would say $200 is a good deal. I have the same...

    I would say $200 is a good deal. I have the same setup and payed way more for the three parts separately
  23. 6 x 11/70's connected to 16 x 11/23's connected...

    6 x 11/70's connected to 16 x 11/23's connected via DZ11 20ma in a bank running a cheque processing system with OCR and MICR
    11/34's used for processing tolls on a river tunnel
    various 11/73's...
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    One thing that I used to find that caused...

    One thing that I used to find that caused intermittent issues is the old DIP switches. I remember them not setting the correct CSR and vector, exercising them would clean them but it wasn't a...
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    DZ11 distribution panel anyone?

    Spotted this at a very good price for anyone with a Unibus system and DZ11's. Nothing to do with me,
    ...
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