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Conference hydra::amiga_v1

Title:AMIGA NOTES
Notice:Join us in the *NEW* conference - HYDRA::AMIGA_V2
Moderator:HYDRA::MOORE
Created:Sat Apr 26 1986
Last Modified:Wed Feb 05 1992
Last Successful Update:Fri Jun 06 1997
Number of topics:5378
Total number of notes:38326

4666.0. "GVPII/second drive hangs SCSI bus" by DECWET::DAVIS (Strength through Peace) Sat Apr 06 1991 21:54

    I am having a problem connecting additional drives to the SCSI bus on
    my GVP II.  I recall someone else in this conference having this
    problem and resolving it.  Would you point me to that note thread or
    let me know how the problem got resolved?  Thanks.
    
    mark
    
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4666.1id conflict?STAR::GUINEAUbut what was the question?Sun Apr 07 1991 10:4916
>           <<< Note 4666.0 by DECWET::DAVIS "Strength through Peace" >>>
>                      -< GVPII/second drive hangs SCSI bus >-
> 
>     I am having a problem connecting additional drives to the SCSI bus on
>     my GVP II.  I recall someone else in this conference having this
>     problem and resolving it.  Would you point me to that note thread or
>     let me know how the problem got resolved?  Thanks.
>     

Sounds like it's at the same SCSI id as something else on the bus.

Make sure you give everything it's own id. Id's can be from 0 to 7 and
the gvp board is probably at id 7, so make your disks id's 0 and 1.

john

4666.2Tried different addressesDECWET::DAVISStrength through PeaceSun Apr 07 1991 18:004
    I tried different addresses(1-6) with the same effect.  I am checking
    my cable continuity now.
    
    md
4666.3BOMBE::MOOREAmiga: Where &#039;multimedia&#039; REALLY beganMon Apr 08 1991 02:143
    Is the drive you are trying to add one of the DEC RZ series?  I recall
    some mention of these working only while alone on the bus until after
    formatting...
4666.4Here's a pointer - good luck.ULTRA::BURGESSMad Man across the waterMon Apr 08 1991 10:0714
re           <<< Note 4666.0 by DECWET::DAVIS "Strength through Peace" >>>
>                     -< GVPII/second drive hangs SCSI bus >-

>    I am having a problem connecting additional drives to the SCSI bus on
>    my GVP II.  I recall someone else in this conference having this
>    problem and resolving it.  Would you point me to that note thread or
>    let me know how the problem got resolved?  Thanks.

	You may be thinking of  4564.12  ?   

	Reg


	
4666.5DICKNS::MACDONALDHome of DEC Realtime and VAXELN PubsMon Apr 08 1991 10:412
    Have your terminating resistor packs set correctly on each of the
    drives?
4666.6Probable termination probsDECWET::DAVISStrength through PeaceMon Apr 08 1991 13:344
    I believe I *am* having a termination problem.  I am going to
    internally and externally terminate the drive(s).
    
    mark
4666.7ELWOOD::PETERSMon Apr 08 1991 16:0410
    
    re .6
    
    	The correct way to terminate the SCSI bus is to have the 
    GVP controller on one end of the cable ( the controller terminates
    one end of the bus ). Then have termination resistors in the last drive
    on the SCSI bus. No other termination.
    
    		Steve P.
    
4666.8put rz23 on cardSALEM::LEIMBERGERTue Apr 09 1991 06:298
    I stated in another note that I had similar problems,and I found that
    if I put the RZ23 on the card,and the quantum at the end of the cable I
    had no problems. I can't explain this but I tried several different
    approaches,and two RZ23 drives. It did not matter until I traded in my
    older GVP controller for the latest version. I was going along fine
    until I swapped controllers. My next effort will be to exchange the
    quantum for an RZ23,and see if two will run.
    							bill
4666.9HKFINN::MACDONALDHome of DEC Realtime and VAXELN PubsTue Apr 09 1991 09:534
    RE: .8 
    
    Possibly the Quantum has the terminating resistor pack and the RZ
    doesn't.
4666.10termination no prob nowCRISTA::LEIMBERGERI have my marbles now I want yoursTue Apr 09 1991 10:4010
>>    Possibly the Quantum has the terminating resistor pack and the RZ
>>  doesn't.
  Not so. I tried several combinations with, and without the terminating 
packs. As I am runnung now RZ on card quantum on cable no packs no problem. 
GVP said that it waould be fine. However I used to have it the other way
around with the old controller,and I had to have the RZ terminated. What would
happen if it wasen't was that when I ran Fasstprep it showed as a dec drive
size etc. but when you actually went to perform the software would hang,and the
drive light would come on and stay on.
								bill
4666.11NEED HELLLLLLP. PAMSRC::63653::BARRETTTar is not a playthingWed Jul 10 1991 13:219
I'm also having this problem (no DEC drives involved though), and I suspect
in my case its the SCSI ID setting. Anyone know how to change the SCSI ID of
a Quantum 100meg drive to 1? I have no docs.


THANKS!


Keith
4666.12ULTRA::KINDELBill Kindel @ LTN1Wed Jul 10 1991 14:379
    Re .11:
    
>   I'm also having this problem (no DEC drives involved though), and I
>   suspect in my case its the SCSI ID setting. Anyone know how to change
>   the SCSI ID of a Quantum 100meg drive to 1? I have no docs.
    
    Quantum drives have three address jumpers, which usually come set to
    address #6.  I have no docs either, so I inferred what I could from
    what little I knew and it worked.  Change 110 to 001 and try again.