Re: looking for pinout on a scsi id changer

[nyder <nyder.23@gmail.com>]

On Apr 16, 12:14 am, alawt...@spammenot.mac.com (Anthony Lawther)
wrote:
> nyder <nyder...@gmail.com> wrote:
> > I have a sca to 50pin adaptor, and it has 4 sets of jumpers for ID
> > (though i think it only needs 3 of them), and a manual saying what
> > pins are for what.
>
> > I have this old APS Tech external SCSI box that I am mounting the
> > drive into.
>
> > It has one of those ID changers on it that has the push button above
> > and below the number.
> > 0-6, and when you get to zero, you can't push the down button anymore,
> > or when you get to 6, you can't push the up button anymore.
>
> > It has 4 pins off the back of it, which has 3 wires connecting to a
> > small plug, and 1 wire connecting to a smaller plug.
>
> > Wondering if any knows the pinout of the id changer, or what it's
> > called exactly so i can get a better search then I'm getting.
>
> > While I can just use a jumper to set it's ID "permantly" in the case,
> > i'd rather get the ID changer working if possible.
>
> > I tried to take it out to see if i could find who made it, but I can't
> > seem to figure out how to get it out, and don't want to break it.
>
> > okay, I did a bit more checking and it's a hompolt PF52 pushwheel
> > switch or something along those lines.
>
> > I figured the 4 lines are the C, and 1 , 2, 4 bits.
>
> > Not sure what the C is for.
>
> C would be for common.
>
>
>
>
>
> > On the adaptor, there are 8 pairs for pins, normal jumper style
>
> > pins going from left pair to right pair:
> > IDbit0, IDbit1, IDbit2, IDbit3, RMT-Start, Start delay, Sync, LED
>
> > On the ID switch:
> > Blue Wire is C
> > Brown Wire is 1 (bit0)
> > Yellow Wire is 2 (bit1)
> > Red Wire is 4 (bit 3)
>
> > Okay, it would seem obvious that the number wires go to one of the
> > same number.  It's just the C (blue wire) i'm not sure about.  I would
> > normally think that it would be the ground, or line to complete the ID
> > circuit.  I don't know what kind of drive was in here before, but i'd
> > have to make it span all 3 pins on one side of the adaptor if I am
> > correct.
>
> Yes, the single C wire would need to connect to one pin for each ID
> jumper and then the individual bit wires to the other pins.
>
>
>
> > Anyways, anyone have any idea?
>
> > thanks
>
> Regards,
> Anthony.

sweet, thats what i thought, but figured i'd check here, since most
the peeps here are very knowledgable about some of this stuff.  =)

now i just have to bust out one of my old macs and parition and format
the drive.

thanks very much