#A3000 Scsi Problem HELP!
5 messages in this thread
>If you have an internal drive (in the Amiga) that is the head end (and should
be terminated), not the controller. In this config you MUST remove the
termination on the controller card. The "tail" end is the external (or LAST
external) drive which must also be terminated (or use a terminating plug on the
expansion box).<
Hi Steve.
Both ends of the system need to be terminated.
If you have only internal drives, the controller must be
terminated, as well as the last physical device.
Thats what my tech support manual says, anyway.
I don't remember being able to remove the 040 card termination,
but I'll look into it. Since my system was terminated externally (passive)
and internally (passive), as well as on the controller, that could
be a problem, although I have run several systems like this with
no failures _ever_.
On the matter of mixing termination, I didn't stop to think that
the external CDRom is passive termination. That was a good point,
but it didn't make a difference in my setup. Still, this is a very valuable
point.
Thanks !!
So, back to my search for the scsi ghost……
Mike Brennan, Sir Render A/V
< Both ends of the system need to be terminated >
Agreed. Perhaps I didn't state it too well but my post referred to the
situation with BOTH internal and external drives connected (in which case the
controller should be unterminated).
< I don't remember being able to remove the 040 card termination >
Possibly true, I think only the later '040 cards had sockets, once GVP realized
they'd screwe up <g>
< although I have run several systems like this with no failures _ever_. >
You're just plain lucky then <vbg>
In my experience the two most common problems are incorrect termination (not
helped in GVP's case by a lousy manual) and using unscreened cables to connect
external drives.
Good luck.
Steve Brightman
Daring to be different – Amiga on the Internet – Lotus on the Interstate
Hi Steve.
>Possibly true, I think only the later '040 cards had sockets, once GVP
realized they'd screwe up <g>
Well, I guess I'l just get out the old soldering iron, then. l8-0
Just for the record, I had the same set of failures when I ran just the
internal drive (passive term) and the controller( terminated.)
I think I'll go out on halloween dressed as a scsi ghost !
Mike Brennan, Sir Render A/V
< Well, I guess I'l just get out the old soldering iron, then. l8-0 >
Good luck, be careful, those PCB traces lift very easily.
< Just for the record, I had the same set of failures when I ran just the
internal drive (passive term) and the controller( terminated.) >
To be honest I've fogotten what those symptoms were now – sorry 🙁 If it was
the "unexpected device status thing, it could only be the drive spinning up too
slowly.
< I think I'll go out on halloween dressed as a scsi ghost ! >
Keep the faith ! As I mentioned my new 1G went in without a hitch. I'm about to
do the same thing at work on a PC without the benefit of HDToolbox ExpertPrep
or anything. I expect much more hassle – after all its a "plug and play" PC <g>
Steve Brightman
Daring to be different – Amiga on the Internet – Lotus on the Interstate
Hi Steve.
>If it was the "unexpected device status thing, it could only be the drive
spinning up too slowly.<
That was one of the problems, how do you remedy that?
The other problem was random read/write errors.
>Keep the faith ! As I mentioned my new 1G went in without a hitch.<
I've done this dozens of times without a hitch untill now.
That's what stumps me, I've tried everything.But I won't give up, of course.
> I'm about to do the same thing at work on a PC without the benefit of
HDToolbox ExpertPrep or anything. I expect much more hassle – after all its a
"plug and play" PC <g> <
Don't tell me you've ever had a hardware conflict with a PC !!! 😉
In school they used to tell me "watch your P's and Q's"
Now you have to watch your 'IRQ's" 🙂
Mike Brennan, Sir Render A/V