--- John Allain <allain_at_panix.com> wrote:
> > Ok, specifically it is a TK50Z, an external box.
> > What's the difference?
>
> It's been said that the 'non -GA' systems
> aren't generic SCSI, but a DEC proprietization.
Yes... Z8530 SCSI chip, minor mods to the protocol. It's possible
to connect, say, an Amiga 2000 w/A2091 to a TK50Z-FA, but it has to
be the only device on the bus. A friend of mine at the local DEC
office did it 10 years ago (he had access to the drives through work,
I guess).
> I have one both. The TK50Z-GA is the one that
> has the SCSI ID selector on it, so the story seems
> to jive.
The TK50Z-FA board has no selector, as you say, but it does have a
fixed target address (2? 4?)
> Believe the -GA will work on 3100 and greater and
> the -non will work on 2000's. Don't know for certain
> yet.
I have been using TK50Z-FAs on MV2000s for years. I have never had
a MV3100 to play with, but AFAIK, you are correct.
I also understand that device ID selector aside, when you drop a -GA
ROM into an -FA, it behaves like a -GA at a fixed address. To change
the SCSI target address requires hardware mods to the -FA board but
it can be done.
-ethan
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Received on Wed Feb 13 2002 - 13:57:38 GMT