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Internet Message Format  |  1992-12-26  |  1.7 KB
  1. Path: sparky!uunet!portal!cup.portal.com!thad
  2. From: thad@cup.portal.com (Thad P Floryan)
  3. Newsgroups: comp.sys.hp
  4. Subject: Re: Changing Quantum PD425S bus address
  5. Message-ID: <72448@cup.portal.com>
  6. Date: Sat, 26 Dec 92 16:23:28 PST
  7. Organization: The Portal System (TM)
  8. Distribution: usa
  9. References:  <47747@ogicse.ogi.edu>
  10. Lines: 37
  11.  
  12. In article <47747@ogicse.ogi.edu>
  13. jinouye@columbus.cse.ogi.edu (Jon Inouye) writes:
  14.  
  15. |I am in the process of trying to figure out how to change the SCSI bus address
  16. |of a Quantum PD425S internal drive attached to the core I/O SCSI interface on
  17. |[...]
  18. |I took the drive out of the cabinet and couldn't see any switches that might
  19. |indicate the bus address. We received no disk drive documentation with the
  20. |system so I'm currently at a loss on how to proceed. I would appreciate any
  21. |[...]
  22.  
  23. LOOK at the underside of the drive in the area of the SCSI connector:
  24.  
  25.                                        |
  26.                                [OO] SS |
  27.                                [OO] EP |
  28.                                [OO] WS |
  29.                                        |
  30.                                [OO] A2 |
  31.                                [OO] A1 |
  32.                                [OO] A0 |
  33.                                        |
  34.    --------------------------------+   |
  35.          SCSI CONNECTOR            |   |
  36.    --------------------------------+---+
  37.  
  38.  
  39. The {A2,A1,A0} jumpers select the SCSI address, weighted 4,2,1 respectively.
  40. "SS" is self-seek test; do NOT jumper.
  41. "EP" is enable parity, DO jumper.
  42. "WS" is wait-spin; no need to jumper.
  43.  
  44. There simply isn't enough room (height) on the 425S card for switches, hence
  45. the jumpers.
  46.  
  47.  
  48. Thad Floryan [ thad@btr.com, thad@cup.portal.com ]
  49.