(TXT) View Source
       
       # ADAPTEC
       
          ACB-5500
       
          +------------------------------------------------------------+
          |------------------------------------------------------------|
          | Data bus:                | None (SCSI to ST506 interface)  |
          |--------------------------+---------------------------------|
          | Size:                    | Drive card                      |
          |--------------------------+---------------------------------|
          | Hard drives supported:   | SCSI to four RLL ST506 drives   |
          |--------------------------+---------------------------------|
          | Floppy drives supported: | None                            |
          +------------------------------------------------------------+
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |                   Function                   |  Location   |
          |----------------------------------------------+-------------|
          | 34-pin control cable connector-hard drive(s) |     CN1     |
          |----------------------------------------------+-------------|
          | 20-pin data cable connector-drive 0          |     J2      |
          |----------------------------------------------+-------------|
          | 20-pin data cable connector-drive 1          |     J3      |
          |----------------------------------------------+-------------|
          | 20-pin data cable connector-drive 2          |     J4      |
          |----------------------------------------------+-------------|
          | 20-pin data cable connector-drive 3          |     J5      |
          |----------------------------------------------+-------------|
          | 4-pin connector-DC power                     |     J7      |
          |----------------------------------------------+-------------|
          | 50-pin SCSI connector-to host adapter        |     J8      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE JUMPERS                  |
          |------------------------------------------------------------|
          |              Function              |  Location   | Setting |
          |------------------------------------+-------------+---------|
          | » | SCSI bus reset is "hard"       | J6/jumper 1 | closed  |
          |---+--------------------------------+-------------+---------|
          |   | SCSI bus reset is "soft"       | J6/jumper 1 |  open   |
          |---+--------------------------------+-------------+---------|
          | » | Factory configured - do not    | J6/jumper 2 |  open   |
          |   | alter                          |             |         |
          |---+--------------------------------+-------------+---------|
          | » | LUN 0 is a hard-sectored drive | J6/jumper 3 | closed  |
          |---+--------------------------------+-------------+---------|
          |   | LUN 0 is not a hard-sectored   | J6/jumper 3 |  open   |
          |   | drive                          |             |         |
          |---+--------------------------------+-------------+---------|
          | » | LUN 1 is a hard-sectored drive | J6/jumper 4 | closed  |
          |---+--------------------------------+-------------+---------|
          |   | LUN 1 is not a hard-sectored   | J6/jumper 4 |  open   |
          |   | drive                          |             |         |
          |---+--------------------------------+-------------+---------|
          | » | Factory configured - do not    | J6/jumper 5 |  open   |
          |   | alter                          |             |         |
          |---+--------------------------------+-------------+---------|
          | » | Self-diagnostics enabled       | J6/jumper 6 | closed  |
          |---+--------------------------------+-------------+---------|
          |   | Normal operation               | J6/jumper 6 |  open   |
          |---+--------------------------------+-------------+---------|
          | » | SCSI parity check enabled      | J6/jumper 7 | closed  |
          |---+--------------------------------+-------------+---------|
          |   | SCSI parity check disabled     | J6/jumper 7 |  open   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                        SCSI ADDRESS                        |
          |------------------------------------------------------------|
          |  SCSI ID   |  J6/jumper 8  |  J6/jumper 9  | J6/jumper 10  |
          |------------+---------------+---------------+---------------|
          |    |   0   |     open      |     open      |     open      |
          |----+-------+---------------+---------------+---------------|
          |    |   1   |     open      |     open      |    closed     |
          |----+-------+---------------+---------------+---------------|
          |    |   2   |     open      |    closed     |     open      |
          |----+-------+---------------+---------------+---------------|
          |    |   3   |     open      |    closed     |    closed     |
          |----+-------+---------------+---------------+---------------|
          |    |   4   |    closed     |     open      |     open      |
          |----+-------+---------------+---------------+---------------|
          |    |   5   |    closed     |     open      |    closed     |
          |----+-------+---------------+---------------+---------------|
          |    |   6   |    closed     |    closed     |     open      |
          |----+-------+---------------+---------------+---------------|
          | »  |   7   |    closed     |    closed     |    closed     |
          +------------------------------------------------------------+