STORAGE DIMENSIONS
==================

   SDC1602B, SDC1602F

   +------------------------------------------------------------+
   |------------------------------------------------------------|
   | Data bus:         | 16-bit, ISA                            |
   |-------------------+----------------------------------------|
   | Size:             | Three/quarter-length, full-height card |
   |-------------------+----------------------------------------|
   | Hard drive        | Up to seven SCSI devices               |
   | supported:        |                                        |
   |-------------------+----------------------------------------|
   | Floppy drives     | Two 360KB, 720KB, 1.2MB, or 1.44MB     |
   | supported:        | drives                                 |
   +------------------------------------------------------------+

<gopher://bitreich.org/I/th99/c/S-T/20409-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |                   Function                    |  Location  |
   |-----------------------------------------------+------------|
   | 4-pin connector - Drive active LED            |    CN1     |
   |-----------------------------------------------+------------|
   | 34-pin control cable connector - floppy drive |    CN2     |
   |-----------------------------------------------+------------|
   | 50-pin SCSI connector - internal              |    CN3     |
   |-----------------------------------------------+------------|
   | 50-pin SCSI connector - external              |    CN4     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                          SCSI ID                           |
   |------------------------------------------------------------|
   |  SCSI ID   |  S1/switch 1  |  S1/switch 2  |  S1/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       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |            Function             |  Location   |  Setting   |
   |---------------------------------+-------------+------------|
   |>> | SCSI parity check disabled  | S1/switch 4 |    off     |
   |---+-----------------------------+-------------+------------|
   |   | SCSI parity check enabled   | S1/switch 4 |     on     |
   |---+-----------------------------+-------------+------------|
   |>> | 1GB translation enabled     | S1/switch 5 |     on     |
   |   | (DOS compatible)            |             |            |
   |---+-----------------------------+-------------+------------|
   |   | 1GB translation disabled    | S1/switch 5 |    off     |
   |   | (UNIX compatible)           |             |            |
   |---+-----------------------------+-------------+------------|
   |>> | SCSI synchronous            | S1/switch 6 |     on     |
   |   | negotiation disabled        |             |            |
   |---+-----------------------------+-------------+------------|
   |   | SCSI synchronous            | S1/switch 6 |    off     |
   |   | negotiation enabled         |             |            |
   |---+-----------------------------+-------------+------------|
   |>> | Floppy drive port address   |     W14     |    open    |
   |   | is 3F0-3F7h                 |             |            |
   |---+-----------------------------+-------------+------------|
   |   | Floppy drive port address   |     W14     |   closed   |
   |   | is 370-377h                 |             |            |
   |---+-----------------------------+-------------+------------|
   |>> | Floppy drive enabled        |  W15 & W16  |   closed   |
   |---+-----------------------------+-------------+------------|
   |   | Floppy drive disabled       |  W15 & W16  |    open    |
   |---+-----------------------------+-------------+------------|
   |>> | I/O Channel Ready signal    |     W17     | pins 1 & 2 |
   |   | disabled                    |             |   closed   |
   |---+-----------------------------+-------------+------------|
   |   | I/O Channel Ready signal    |     W17     | pins 2 & 3 |
   |   | enabled                     |             |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               DMA CHANNEL CONFIGURATION - S1               |
   |------------------------------------------------------------|
   |    DMA Channel     |    S1/switch 7    |    S1/switch 8    |
   |--------------------+-------------------+-------------------|
   |>> |       5        |        on         |        on         |
   |---+----------------+-------------------+-------------------|
   |   |       6        |        off        |        on         |
   |---+----------------+-------------------+-------------------|
   |   |       7        |        on         |        off        |
   |---+----------------+-------------------+-------------------|
   |   |    Disabled    |        off        |        off        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |            I/O PORT ADDRESS CONFIGURATION - S2             |
   |------------------------------------------------------------|
   |    Address    | S2/switch 1  | S2/switch 2  | S2/switch 3  |
   |---------------+--------------+--------------+--------------|
   |   | 130-133h  |      on      |     off      |      on      |
   |---+-----------+--------------+--------------+--------------|
   |   | 134-137h  |      on      |     off      |     off      |
   |---+-----------+--------------+--------------+--------------|
   |   | 230-233h  |     off      |      on      |      on      |
   |---+-----------+--------------+--------------+--------------|
   |   | 234-237h  |     off      |      on      |     off      |
   |---+-----------+--------------+--------------+--------------|
   |>> | 330-333h  |      on      |      on      |      on      |
   |---+-----------+--------------+--------------+--------------|
   |   | 334-337h  |      on      |      on      |     off      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     BIOS ADDRESS - S2                      |
   |------------------------------------------------------------|
   |      Address       |    S2/switch 4    |    S2/switch 5    |
   |--------------------+-------------------+-------------------|
   |   |     C800h      |        off        |        off        |
   |---+----------------+-------------------+-------------------|
   |   |     D800h      |        off        |        on         |
   |---+----------------+-------------------+-------------------|
   |>> |     DC00h      |        on         |        on         |
   |---+----------------+-------------------+-------------------|
   |   |    Disabled    |        on         |        off        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |            INTERRUPT REQUEST CONFIGURATION - S2            |
   |------------------------------------------------------------|
   |    IRQ     |  S2/switch 6  |  S2/switch 7  |  S2/switch 8  |
   |------------+---------------+---------------+---------------|
   |     |  9   |      on       |      off      |      on       |
   |-----+------+---------------+---------------+---------------|
   |     |  10  |      off      |      on       |      on       |
   |-----+------+---------------+---------------+---------------|
   |>>   |  11  |      on       |      on       |      on       |
   |-----+------+---------------+---------------+---------------|
   |     |  12  |      off      |      off      |      on       |
   |-----+------+---------------+---------------+---------------|
   |     |  14  |      on       |      on       |      off      |
   |-----+------+---------------+---------------+---------------|
   |     |  15  |      off      |      on       |      off      |
   |------------------------------------------------------------|
   | Note: This IRQ setting must be the same as the IRQ setting |
   | configured on jumpers W3-W8.                               |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              INTERRUPT REQUEST CONFIGURATION               |
   |------------------------------------------------------------|
   |  IRQ  |    W3    |   W4   |   W5   |  W6   |  W7   |  W8   |
   |-------+----------+--------+--------+-------+-------+-------|
   |  | 9  |   open   |  open  |  open  | open  | open  |closed |
   |--+----+----------+--------+--------+-------+-------+-------|
   |  | 10 |   open   |  open  |  open  | open  |closed | open  |
   |--+----+----------+--------+--------+-------+-------+-------|
   |>> | 11 |   open   |  open  |  open  |closed | open  | open  |
   |--+----+----------+--------+--------+-------+-------+-------|
   |  | 12 |   open   |  open  | closed | open  | open  | open  |
   |--+----+----------+--------+--------+-------+-------+-------|
   |  | 14 |   open   | closed |  open  | open  | open  | open  |
   |--+----+----------+--------+--------+-------+-------+-------|
   |  | 15 |  closed  |  open  |  open  | open  | open  | open  |
   |------------------------------------------------------------|
   |Note: This IRQ setting must be the same as the IRQ setting  |
   |configured on S2, switches 6-8.                             |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DMA TRANSFER SPEED                     |
   |------------------------------------------------------------|
   |         Speed          |       W11       |       W13       |
   |------------------------+-----------------+-----------------|
   |>> |     5.0MB/sec      |      open       |      open       |
   |---+--------------------+-----------------+-----------------|
   |   |     5.7MB/sec      |      open       |     closed      |
   |---+--------------------+-----------------+-----------------|
   |   |     6.7MB/sec      |     closed      |      open       |
   |---+--------------------+-----------------+-----------------|
   |   |     8.0MB/sec      |     closed      |     closed      |
   +------------------------------------------------------------+