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

   OMTI 9542

   +------------------------------------------------------------+
   |------------------------------------------------------------|
   | Data bus:         | 16-bit, ISA                            |
   |-------------------+----------------------------------------|
   | Size:             | Three/quarter-length, full-height card |
   |-------------------+----------------------------------------|
   | Hard drive        | Up to 7 SCSI devices                   |
   | supported:        |                                        |
   |-------------------+----------------------------------------|
   | Floppy drives     | None                                   |
   | supported:        |                                        |
   +------------------------------------------------------------+

<gopher://bitreich.org/I/th99/c/S-T/20730-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |                 Function                 |    Location     |
   |------------------------------------------+-----------------|
   | 4-pin connector - drive active LED       |       J1        |
   |------------------------------------------+-----------------|
   | 34-pin floppy drive connector            |       J2        |
   |------------------------------------------+-----------------|
   | 50-pin SCSI connector - internal         |       J3        |
   |------------------------------------------+-----------------|
   | 50-pin SCSI connector - external         |       J4        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                          SCSI ID                           |
   |------------------------------------------------------------|
   |    SCSI ID     |    SW1/1     |    SW1/2     |    SW1/3    |
   |----------------+--------------+--------------+-------------|
   |>>  |     7     |      on      |      on      |     on      |
   |----+-----------+--------------+--------------+-------------|
   |    |     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      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function               |  Location  | Setting |
   |-------------------------------------+------------+---------|
   |>> | SCSI parity enabled             |   SW1/4    |   on    |
   |---+---------------------------------+------------+---------|
   |   | SCSI parity disabled            |   SW1/4    |   off   |
   |---+---------------------------------+------------+---------|
   |>> | Auto SCSI sense enabled         |   SW1/5    |   on    |
   |---+---------------------------------+------------+---------|
   |   | Auto SCSI sense disabled        |   SW1/5    |   off   |
   |---+---------------------------------+------------+---------|
   |>> | Sync negotiation disabled       |   SW1/6    |   on    |
   |---+---------------------------------+------------+---------|
   |   | Sync negotiation enabled        |   SW1/6    |   off   |
   |---+---------------------------------+------------+---------|
   |>> | Floppy primary address is 3Fxh  |    W14     |  open   |
   |---+---------------------------------+------------+---------|
   |   | Floppy secondary address is     |    W14     | closed  |
   |   | 37xh                            |            |         |
   |---+---------------------------------+------------+---------|
   |>> | I/O channel ready enabled       | W17/pins 1 | closed  |
   |   |                                 |    & 2     |         |
   |---+---------------------------------+------------+---------|
   |   | I/O channel ready disabled      | W17/pins 2 | closed  |
   |   |                                 |    & 3     |         |
   +------------------------------------------------------------+

+--------------------------------------------------------------------+
|                        INTERRUPT SELECTION                         |
|--------------------------------------------------------------------|
|  IRQ   |SW2/6|SW2/7|SW2/8|  W3  |  W4  |  W5  |  W6  |  W7  |  W8  |
|--------+-----+-----+-----+------+------+------+------+------+------|
|>>|  11  | on  | on  | on  | open | open | open |closed| open | open |
|-+------+-----+-----+-----+------+------+------+------+------+------|
| |  9   | on  | off | on  | open | open | open | open | open |closed|
|-+------+-----+-----+-----+------+------+------+------+------+------|
| |  10  | off | on  | on  | open | open | open | open |closed| open |
|-+------+-----+-----+-----+------+------+------+------+------+------|
| |  12  | off | off | on  | open | open |closed| open | open | open |
|-+------+-----+-----+-----+------+------+------+------+------+------|
| |  14  | on  | on  | off | open |closed| open | open | open | open |
|-+------+-----+-----+-----+------+------+------+------+------+------|
| |  15  | off | on  | off |closed| open | open | open | open | open |
|-+------+-----+-----+-----+------+------+------+------+------+------|
| |Rsrvd.| off | off | off | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  |
|-+------+-----+-----+-----+------+------+------+------+------+------|
| |Rsrvd.| on  | off | off | N/A  | N/A  | N/A  | N/A  | N/A  | N/A  |
+--------------------------------------------------------------------+

   +------------------------------------------------------------+
   |                       DMA SELECTION                        |
   |------------------------------------------------------------|
   |          DMA           |      SW1/7      |      SW1/8      |
   |------------------------+-----------------+-----------------|
   |>> |         5          |       on        |       on        |
   |---+--------------------+-----------------+-----------------|
   |   |         6          |       off       |       on        |
   |---+--------------------+-----------------+-----------------|
   |   |         7          |       on        |       off       |
   |---+--------------------+-----------------+-----------------|
   |   |      Disabled      |       off       |       off       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |            FLOPPY DISK CONTROLLER CONFIGURATION            |
   |------------------------------------------------------------|
   |     Controller     |        W15         |       W16        |
   |--------------------+--------------------+------------------|
   |      Enabled       |       closed       |      closed      |
   |--------------------+--------------------+------------------|
   |      Disabled      |        open        |       open       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DMA TRANSFER RATE                      |
   |------------------------------------------------------------|
   |     Transfer Rate      |       W11       |       W13       |
   |------------------------+-----------------+-----------------|
   |>> |     5.0 MB/sec     |      open       |      open       |
   |---+--------------------+-----------------+-----------------|
   |   |     5.7 MB/sec     |      open       |     closed      |
   |---+--------------------+-----------------+-----------------|
   |   |     6.7 MB/sec     |     closed      |      open       |
   |---+--------------------+-----------------+-----------------|
   |   |     8.0 MB/sec     |     closed      |     closed      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                      I/O BASE ADDRESS                      |
   |------------------------------------------------------------|
   |      Address      |    SW2/1    |    SW2/2    |   SW2/3    |
   |-------------------+-------------+-------------+------------|
   |>> |   330h-333h   |     on      |     on      |     on     |
   |---+---------------+-------------+-------------+------------|
   |   |   130h-133h   |     on      |     off     |     on     |
   |---+---------------+-------------+-------------+------------|
   |   |   134h-137h   |     on      |     off     |    off     |
   |---+---------------+-------------+-------------+------------|
   |   |   230h-233h   |     off     |     on      |     on     |
   |---+---------------+-------------+-------------+------------|
   |   |   234h-237h   |     off     |     on      |    off     |
   |---+---------------+-------------+-------------+------------|
   |   |   334h-237h   |     on      |     on      |    off     |
   |---+---------------+-------------+-------------+------------|
   |   |   Reserved    |     off     |     off     |    off     |
   |---+---------------+-------------+-------------+------------|
   |   |   Reserved    |     off     |     off     |     on     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     BIOS BASE ADDRESS                      |
   |------------------------------------------------------------|
   |      Address       |       SW2/4       |       SW2/5       |
   |--------------------+-------------------+-------------------|
   |      0DC000h       |        on         |        on         |
   |--------------------+-------------------+-------------------|
   |      0C8000h       |        off        |        off        |
   |--------------------+-------------------+-------------------|
   |      0CC000h       |        on         |        off        |
   |--------------------+-------------------+-------------------|
   |      0D8000h       |        off        |        on         |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               MISCELLANEOUS TECHNICAL NOTES                |
   |------------------------------------------------------------|
   |           The terminators must remain installed.           |
   +------------------------------------------------------------+