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Thread: Model 12 BUS BOARD

  1. #21

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    I will do it.
    But I do not want a new changes !!

    For your information a I.C. 74LSxxx can Commender 4 to 6 I.C. 74LSxx
    So I think it should be buffered the "HANS-04 PCB" otherwise the signals will collapse after 2 additional cards

    Je vais le faire. mais je ne veux plus de nouvelles modifications!!
    Pour ton information un C.I. 74LSxxx ne peut commender que 4 à 6 C.I. 74LSxx
    Donc je pense qu'il faudrat buffériser le "PCB HANS-04" sinon les signaux vont s'écrouler après 2 cartes supplémentaires

  2. #22
    Join Date
    Feb 2014
    Location
    Netherlands
    Posts
    399

    Default

    P.V. is busy now to solve your wishes but told me that
    further changes are not possible after this.

    If you need the, hard to get, resistor arrays from Brourns the 4116R-2-391LF, you can get them at mouser.com.
    (attention it must be the -2- version)

  3. #23

    Default

    P.H, I'm genuinely sorry if my request is causing you grief. It is only a wish. Please only work on what you enjoy doing. That's what I do. Your work is very much appreciated by the community.

  4. #24

    Default

    Quote Originally Posted by Hans01 View Post
    P.V. is busy now to solve your wishes but told me that
    further changes are not possible after this.

    If you need the, hard to get, resistor arrays from Brourns the 4116R-2-391LF, you can get them at mouser.com.
    (attention it must be the -2- version)
    For information,
    I work on the project.
    You can put resistors or resistor networks like DIL
    If I do not make mistakes

    Pour information,
    Je travaille sur le projet.
    Vous pourrez mettre des résistances ou des réseaux de résistances type DIL
    Si je ne fais pas d'erreurs

  5. #25

    Default

    For information,
    I work on the project.
    You can put resistors or resistor networks like DIL 4116R-1-391
    If I do not make mistakes

    Pour information,
    Je travaille sur le projet.
    Vous pourrez mettre des résistances ou des réseaux de résistances type DIL 4116R-1-391
    Si je ne fais pas d'erreurs

  6. #26
    Join Date
    Feb 2014
    Location
    Netherlands
    Posts
    399

    Default

    @all

    Today I have modified my Model 12 and build the hans-03 and hans-04 in the machine.
    I could mount the 3 slot hans-03 just behind the original videocard and connect it
    with two short flatcables with the hans-04 that was mounted in the videoslot.

    I inserted the videocard in the first slot of the hans-03 and my hans-01 harddisk card in slot 2
    and leave slot 3 empty.

    The machine booted in the normal way and has no problems, the harddisk run without any problem.
    The conclusion is: It works just as I expected.

    To show you the positive results are here some pictures.

    HPIM0271.jpg HPIM0272.jpg HPIM0273.jpg HPIM0274.jpg HPIM0276.jpg

    Conclusion:

    The idea of extending the bus for the Model 12 is possible.
    It should work for al the machines with the same bus
    Only tested with the described hardware and two slots occupied.
    As I don't have any other machine and no more extension card is this all I can test.
    If you going to use it, read all that is written about this.
    Check everything double and in doubt don't do it.
    Absolutely no warranty !!!!!!!!!

  7. #27
    Join Date
    Jul 2009
    Location
    Curwensville, PA
    Posts
    481

    Default

    So, how do we get the circuit boards?
    Kipp
    Looking for: Altair 8800, Ithaca Intersystems boards, software, manuals. and Jade bus probe card.

  8. #28

    Default

    I have another possible use for the Hans03. I have a spare Model II card cage. What if I join together (2) Hans03 adapters using 40pin cables. Plug one end into the Model 12 mainboard connector. Plug the other end into the first slot of the Model II motherboard. All of the card cage slots should now be active. I'll still have to do some trimming and sheet metal work.

    Thoughts?

  9. #29
    Join Date
    Feb 2014
    Location
    Netherlands
    Posts
    399

    Default

    @kyeakel

    The first release of the PCB was drawn by P.H.
    I have a few boards and IAN has a few too.
    They are bare boards and you have to build them yourself.

    The hans-01 is a harddisk controller for the Io-Tech ide harddisk and you need this PCB too.
    The hans-02 is an advanced hans-01, I have a few here.
    The hans-03 plus hans-04 makes a bus extender for the "bus-less" Model 12 and for more handy bus expansions.
    They will be sold by Ian.

  10. #30
    Join Date
    Feb 2014
    Location
    Netherlands
    Posts
    399

    Default

    @pski

    Sorry but I don't see what you want.
    Please supply a simple drawing and I'll take a look.

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