SCIENTIFIC MICRO SYSTEMS, INC.
==============================

   OMTI 5100I, OMTI 5200I, OMTI 5400I

   +------------------------------------------------------------+
   |------------------------------------------------------------|
   | Data bus:     | 50-pin SCSI interface                      |
   |---------------+--------------------------------------------|
   | Size:         | 5.25" FF                                   |
   |---------------+--------------------------------------------|
   | Hard drive    | Up to two IDE(AT) drives                   |
   | supported:    |                                            |
   |---------------+--------------------------------------------|
   | Floppy drives | Two 360KB, 720KB, 1.2MB, 1.44Mb or 8"      |
   | supported:    | drives (except 5100I)                      |
   |---------------+--------------------------------------------|
   |               |                                            |
   +------------------------------------------------------------+

<gopher://bitreich.org/I/th99/c/S-T/20731-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |                   Function                   |  Location   |
   |----------------------------------------------+-------------|
   | 50-pin SCSI interface                        |     J1      |
   |----------------------------------------------+-------------|
   | 40-pin IDE(AT) connector                     |     J2      |
   |----------------------------------------------+-------------|
   | 34-pin floppy drive connector (not in 5100I) |     J7      |
   |----------------------------------------------+-------------|
   | 50-pin tape drive connector (5400I only)     |     J8      |
   |----------------------------------------------+-------------|
   | DC power connector                           |     J10     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                          SCSI ID                           |
   |------------------------------------------------------------|
   |SCSI| ID/0 | ID/1 | ID/2 | ID/3 | ID/4 | ID/5 | ID/6 | ID/7 |
   | ID |      |      |      |      |      |      |      |      |
   |----+------+------+------+------+------+------+------+------|
   |>> |0|closed| open | open | open | open | open | open | open |
   |--+-+------+------+------+------+------+------+------+------|
   |  |1| open |closed| open | open | open | open | open | open |
   |--+-+------+------+------+------+------+------+------+------|
   |  |2| open | open |closed| open | open | open | open | open |
   |--+-+------+------+------+------+------+------+------+------|
   |  |3| open | open | open |closed| open | open | open | open |
   |--+-+------+------+------+------+------+------+------+------|
   |  |4| open | open | open | open |closed| open | open | open |
   |--+-+------+------+------+------+------+------+------+------|
   |  |5| open | open | open | open | open |closed| open | open |
   |--+-+------+------+------+------+------+------+------+------|
   |  |6| open | open | open | open | open | open |closed| open |
   |--+-+------+------+------+------+------+------+------+------|
   |  |7| open | open | open | open | open | open | open |closed|
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function              |  Location   | Setting |
   |------------------------------------+-------------+---------|
   |>> | SCSI parity enabled            | W1/pins 1 & | closed  |
   |   |                                |      2      |         |
   |---+--------------------------------+-------------+---------|
   |   | SCSI parity disabled           | W1/pins 2 & | closed  |
   |   |                                |      3      |         |
   |---+--------------------------------+-------------+---------|
   |>> | Tape drive parity enabled      | W2/pins 1 & | closed  |
   |   | (5400I)                        |      2      |         |
   |---+--------------------------------+-------------+---------|
   |   | Tape drive parity disabled     | W2/pins 2 & | closed  |
   |   |                                |      3      |         |
   |---+--------------------------------+-------------+---------|
   |   | Motor on signal enabled by     |     W14     |  open   |
   |   | command (5200I & 5400I)        |             |         |
   |---+--------------------------------+-------------+---------|
   |   | Motor on signal always enabled |     W14     | closed  |
   |---+--------------------------------+-------------+---------|
   |   | Ready signal for FDC enabled   |     W15     | closed  |
   |---+--------------------------------+-------------+---------|
   |   | Ready signal for FDC disabled  |     W15     |  open   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  IDE SECTOR CONFIGURATION                  |
   |------------------------------------------------------------|
   |        Bytes/Sector        |      W3       |      W4       |
   |----------------------------+---------------+---------------|
   |>>          |      512      |     open      |     open      |
   |------------+---------------+---------------+---------------|
   |            |      256      |    closed     |     open      |
   |------------+---------------+---------------+---------------|
   |            |      512      |     open      |    closed     |
   |------------+---------------+---------------+---------------|
   |            |     1024      |    closed     |    closed     |
   |------------------------------------------------------------|
   | Note: The two settings of 512 bytes/sector have different  |
   | number of sector/track.                                    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               LUN 0 DISK TYPE CONFIGURATION                |
   |------------------------------------------------------------|
   |    Drive Type    |      Model #       |         W5         |
   |------------------+--------------------+--------------------|
   |       IDE        |       5100I        |   open or closed   |
   |------------------+--------------------+--------------------|
   |       IDE        |    5200I, 5400I    |        open        |
   |------------------+--------------------+--------------------|
   |     Flexible     |    5200I, 5400I    |       closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               LUN 1 DISK TYPE CONFIGURATION                |
   |------------------------------------------------------------|
   |    Drive Type    |      Model #       |         W6         |
   |------------------+--------------------+--------------------|
   |       IDE        |       5100I        |   open or closed   |
   |------------------+--------------------+--------------------|
   |       IDE        |    5200I, 5400I    |        open        |
   |------------------+--------------------+--------------------|
   |     Flexible     |    5200I, 5400I    |       closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               LUN 2 DISK TYPE CONFIGURATION                |
   |------------------------------------------------------------|
   |    Drive Type    |      Model #       |         W7         |
   |------------------+--------------------+--------------------|
   |       IDE        |       5100I        |   open or closed   |
   |------------------+--------------------+--------------------|
   |       IDE        |    5200I, 5400I    |        open        |
   |------------------+--------------------+--------------------|
   |     Flexible     |    5200I, 5400I    |       closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               LUN 3 DISK TYPE CONFIGURATION                |
   |------------------------------------------------------------|
   |    Drive Type    |      Model #       |         W8         |
   |------------------+--------------------+--------------------|
   |       IDE        |       5100I        |   open or closed   |
   |------------------+--------------------+--------------------|
   |       IDE        |       5200I,       |        open        |
   |------------------+--------------------+--------------------|
   |     Flexible     |    5200I, 5400I    |       closed       |
   |------------------+--------------------+--------------------|
   |       Tape       |       5400I        |        open        |
   +------------------------------------------------------------+