[Coladam] PC Interface to Adam DDP Drive

Joe Blenkle jblenkle at sacnews.net
Thu Oct 22 22:10:48 CEST 2009


OK, I'll believe you if you say so <grin>...the extent of my electronics knowledge is only slightly above the ability to plug things in and unplug them again. I generally have no clue how they work.

Joe B.
  ----- Original Message ----- 
  From: Joseph Oprysko 
  To: Joe Blenkle 
  Cc: coladam at adamcon.org 
  Sent: Thursday, October 22, 2009 12:47 PM
  Subject: Re: [Coladam] PC Interface to Adam DDP Drive


  Well, apparently the data drive uses both +12v and +5 Volts, both readily available from the PC's power supply.  It would really just be a matter of bridging the +12v to the interface board (or a small external power supply if the Adam's drive was attached externally)  If done using just the 2 cables from the drive to the PC, could build in a power connector onto the board that you would attach one of the hard drive/floppy drive power connectors.  Nothing real serious to overcome.  The other option would be to build a small interface board that both Data Drive connectors would attach to, and then have a cable connector (like a floppy or hard drive cable) to interface it to the PC.  And on that little daughter board have the power connector.  Either way, it is nothing insurmountable.


  On Thu, Oct 22, 2009 at 3:31 PM, Joe Blenkle <jblenkle at sacnews.net> wrote:

    One obvious problem in interfacing a data drive to a PC would be...how do
    you power it? In the ADAM, the power and data run through the same connector
    which plugs into the ADAM internally. But it would be neat if you could
    figure out how to do it.



    ----- Original Message -----
    From: "geoffrey oltmans" <oltmansg at bellsouth.net>
    To: "Joseph Oprysko" <joprysko1 at gmail.com>; <coladam at adamcon.org>
    Sent: Thursday, October 22, 2009 8:49 AM
    Subject: Re: [Coladam] PC Interface to Adam DDP Drive


    > To my knowledge nobody has done this. The advantage to doing a direct
    > interface to the DDP would be that you wouldn't have to worry about the
    > ADAM Net protocol. I don't know if this is much trouble though, as I think
    > the ADAM Net interface is essentially an I2C bus operating at 62.5 kbps.
    >
    > I had thought it would be a good idea to have some sort of ADAMNet -> USB
    > interface on a PC so that you could interface any ADAM Net device (tape
    > drive, disk drive, hard drive, keyboard, smartwriter...) to the PC and use
    > with an emulator as you suggested.
    >
    >
    >
    >
    > ________________________________
    > From: Joseph Oprysko <joprysko1 at gmail.com>
    > To: coladam at adamcon.org
    > Sent: Thursday, October 22, 2009 10:32:42 AM
    > Subject: [Coladam] PC Interface to Adam DDP Drive
    >
    > Does anyone know if there ever was an interface to connect the Adam DDP
    > drives to a PC?
    >
    > I am considering working with a friend of mine who has developed several
    > interfaces for other machines and drives mostly utilizing CPLD's.
    >
    > If one had been made before, I would like to try to get one, if not, I
    > think
    > it would be a good thing to have.  Imagine using AdamEm with a real Adam
    > Tape, or utilities to be able backup/restore the tape images.  Also would
    > probably be able to perform a low-level format of the a tape (I guess
    > Low-Level is the best way to define it due to the way it has been done)
    >
    > If anyone has the programming experience and would like to help with this
    > project, let me know.  Also, if someone actually had done this at some
    > point
    > in the past and had a working design, I would like to get that and build
    > one.
    >
    > Thanks,
    >
    > Joe
    >
    > --
    > Normal Person: Hey, it seems that you know a lot.
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    > Normal Person: So you go surfing?
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    > Normal Person: Huh? Huh? What?
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  -- 
  Normal Person: Hey, it seems that you know a lot.
  Geek: To be honest, it's due to all the surfing I do.
  Normal Person: So you go surfing?
  Normal Person: But I don't think that has anything to do with knowing a lot...
  Geek: I think that's wrong on a fundamental level.
  Normal Person: Huh? Huh? What?


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