EMULEX CORPORATION
==================

   MD25A, MD26A

   +------------------------------------------------------------+
   +------------------------------------------------------------+

   Data bus: None (SCSI to ESDI interface)

   Size: Drive card

   Hard drives supported:  SCSI to four RLL ESDI drives

   Floppy drives supported: None

<gopher://bitreich.org/I/th99/c/E-H/20096-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |                    Function                    | Location  |
   |------------------------------------------------+-----------|
   | 34-pin control cable connector-hard drive      |    J1     |
   |------------------------------------------------+-----------|
   | 20-pin data cable connector-drive 0            |    J2     |
   |------------------------------------------------+-----------|
   | 20-pin data cable connector-drive 1            |    J3     |
   |------------------------------------------------+-----------|
   | 10-pin connector-user panel (factory use only) |    J4     |
   |------------------------------------------------+-----------|
   | 14-pin connector-test (factory use only)       |    J5     |
   |------------------------------------------------+-----------|
   | 50-pin SCSI connector- to host adapter         |    J6     |
   |------------------------------------------------+-----------|
   | 4-pin connector-DC power                       |    J7     |
   |------------------------------------------------+-----------|
   | 20-pin data cable connector-drive 2            |    J8     |
   |------------------------------------------------+-----------|
   | 20-pin data cable connector-drive 3            |    J9     |
   |------------------------------------------------+-----------|
   | 10-pin connector-user panel (factory use only) |    J10    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |             Function              |   Location   | Setting |
   |-----------------------------------+--------------+---------|
   |>> | Soft error reporting disabled | SW1/switch 4 |   on    |
   |---+-------------------------------+--------------+---------|
   |   | Soft error reporting enabled  | SW1/switch 4 |   off   |
   |---+-------------------------------+--------------+---------|
   |>> | Sector size set to 512 bytes  | SW1/switch 5 |   off   |
   |---+-------------------------------+--------------+---------|
   |   | Sector size set to 256 bytes  | SW1/switch 5 |   on    |
   |---+-------------------------------+--------------+---------|
   |>> | Spindle motor starts on       | SW1/switch 6 |   off   |
   |   | power-up                      |              |         |
   |---+-------------------------------+--------------+---------|
   |   | Spindle motor starts on       | SW1/switch 6 |   on    |
   |   | command                       |              |         |
   |---+-------------------------------+--------------+---------|
   |>> | SCSI parity check disabled    | SW1/switch 7 |   off   |
   |---+-------------------------------+--------------+---------|
   |   | SCSI parity check enabled     | SW1/switch 7 |   on    |
   |---+-------------------------------+--------------+---------|
   |   | Not used                      | SW1/switch 8 |   N/A   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        SCSI ADDRESS                        |
   |------------------------------------------------------------|
   |  SCSI ID   | SW1/switch 1  | SW1/switch 2  | SW1/switch 3  |
   |------------+---------------+---------------+---------------|
   |    |   0   |      off      |      off      |      off      |
   |----+-------+---------------+---------------+---------------|
   |    |   1   |      on       |      off      |      off      |
   |----+-------+---------------+---------------+---------------|
   |    |   2   |      off      |      on       |      off      |
   |----+-------+---------------+---------------+---------------|
   |    |   3   |      on       |      on       |      off      |
   |----+-------+---------------+---------------+---------------|
   |    |   4   |      off      |      off      |      on       |
   |----+-------+---------------+---------------+---------------|
   |    |   5   |      on       |      off      |      on       |
   |----+-------+---------------+---------------+---------------|
   |    |   6   |      off      |      on       |      on       |
   |----+-------+---------------+---------------+---------------|
   |>>  |   7   |      on       |      on       |      on       |
   +------------------------------------------------------------+