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

   SDC1602

   Card Type            Hard drive controller                     
   Hard Drives          Up to 7 SCSI-1 devices                    
   supported            
   Floppy drives        Two 360KB, 720KB, 1.2MB, or 1.44MB drives 
   supported            
   Data Bus             16-bit ISA                                
   Card Size            Half-length, full-height                  

<gopher://bitreich.org/I/th99/c/S-T/21462-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |     Function      | Location |     Function     | Location |
   |-------------------+----------+------------------+----------|
   | 50-pin SCSI       |   CN1    | 4-pin connector  |   CN4    |
   | connector -       |          | - drive active   |          |
   | external          |          | LED              |          |
   |-------------------+----------+------------------+----------|
   | 50-pin SCSI       |   CN2    | SCSI active LED  |   CN5    |
   | connector -       |          |                  |          |
   | internal          |          |                  |          |
   |-------------------+----------+------------------+----------|
   | 34-pin cable      |   CN3    |                  |          |
   | connector -       |          |                  |          |
   | floppy drive      |          |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function               | Label |   Position   |
   |-------------------------------------+-------+--------------|
   |>> | Synchronous negotiation         | J5/1  |     Open     |
   |   | initiation disabled             |       |              |
   |---+---------------------------------+-------+--------------|
   |   | Synchronous negotiation         | J5/1  |    Closed    |
   |   | initiation enabled              |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     | J5/2  |     Open     |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | SCSI parity check disabled      | J5/3  |    Closed    |
   |---+---------------------------------+-------+--------------|
   |   | SCSI parity check enabled       | J5/3  |     Open     |
   |---+---------------------------------+-------+--------------|
   |>> | SCSI BIOS enabled               | J6/1  |    Closed    |
   |---+---------------------------------+-------+--------------|
   |   | SCSI BIOS disabled              | J6/1  |     Open     |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     | J6/2  | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     | J6/3  | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     | J6/4  | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | SCSI auto sense enabled         | J6/5  |     Open     |
   |---+---------------------------------+-------+--------------|
   |   | SCSI auto sense disabled        | J6/5  |    Closed    |
   |---+---------------------------------+-------+--------------|
   |>> | Floppy interface address 3F0h   | J7/1  |     Open     |
   |   | enabled                         |       |              |
   |---+---------------------------------+-------+--------------|
   |   | Floppy interface address 370h   | J7/1  |    Closed    |
   |   | enabled                         |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Floppy drive interface enabled  | J8/1  |    Closed    |
   |---+---------------------------------+-------+--------------|
   |   | Floppy drive interface disabled | J8/1  |     Open     |
   |---+---------------------------------+-------+--------------|
   |>> | Floppy drive dual speed         | J8/8  |     Open     |
   |   | disabled                        |       |              |
   |---+---------------------------------+-------+--------------|
   |   | Floppy drive dual speed enabled | J8/8  |    Closed    |
   |------------------------------------------------------------|
   |      Note:Disable BIOS when SDC1602A is a secondary card   |
   |      in the system.                                        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     SCSI ID SELECTION                      |
   |------------------------------------------------------------|
   |    SCSI ID    |     J5/4     |     J5/5     |     J5/6     |
   |---------------+--------------+--------------+--------------|
   |    |    0     |    Closed    |    Closed    |    Closed    |
   |----+----------+--------------+--------------+--------------|
   |    |    1     |     Open     |    Closed    |    Closed    |
   |----+----------+--------------+--------------+--------------|
   |    |    2     |    Closed    |     Open     |    Closed    |
   |----+----------+--------------+--------------+--------------|
   |    |    3     |     Open     |     Open     |    Closed    |
   |----+----------+--------------+--------------+--------------|
   |    |    4     |    Closed    |    Closed    |     Open     |
   |----+----------+--------------+--------------+--------------|
   |    |    5     |     Open     |    Closed    |     Open     |
   |----+----------+--------------+--------------+--------------|
   |    |    6     |    Closed    |     Open     |     Open     |
   |----+----------+--------------+--------------+--------------|
   |>>  |    7     |     Open     |     Open     |     Open     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DMA CHANNEL SELECTION (1)                  |
   |------------------------------------------------------------|
   |      Channel       |       J5/7        |       J5/8        |
   |--------------------+-------------------+-------------------|
   |    |       0       |      Closed       |      Closed       |
   |----+---------------+-------------------+-------------------|
   |>>  |       5       |       Open        |      Closed       |
   |----+---------------+-------------------+-------------------|
   |    |       6       |      Closed       |       Open        |
   |----+---------------+-------------------+-------------------|
   |    |       7       |       Open        |       Open        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               FLOPPY INTERFACE DMA SELECTION               |
   |------------------------------------------------------------|
   |  Channel   |   J8/2    |   J8/3    |   J8/4    |   J8/5    |
   |------------+-----------+-----------+-----------+-----------|
   |>>  |   2   |  Closed   |   Open    |  Closed   |   Open    |
   |----+-------+-----------+-----------+-----------+-----------|
   |    |   3   |   Open    |  Closed   |   Open    |  Closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                DMA TRANSFER SPEED SELECTION                |
   |------------------------------------------------------------|
   |        Setting         |      J5/12      |      J5/13      |
   |------------------------+-----------------+-----------------|
   |>> |     5.0 MB/sec     |      Open       |      Open       |
   |---+--------------------+-----------------+-----------------|
   |   |     5.7 MB/sec     |     Closed      |      Open       |
   |---+--------------------+-----------------+-----------------|
   |   |     6.7 MB/sec     |      Open       |     Closed      |
   |---+--------------------+-----------------+-----------------|
   |   |     8.0 MB/sec     |     Closed      |     Closed      |
   +------------------------------------------------------------+

   +---------------------------------------------------------------+
   |                   DMA CHANNEL SELECTION (2)                   |
   |---------------------------------------------------------------|
   |Channel| J9/1 | J9/2 | J9/3 | J9/4 | J9/5 | J9/6 | J9/7 | J9/8 |
   |-------+------+------+------+------+------+------+------+------|
   |   | 0 |Closed| Open | Open | Open |Closed| Open | Open | Open |
   |---+---+------+------+------+------+------+------+------+------|
   |>>  | 5 | Open |Closed| Open | Open | Open |Closed| Open | Open |
   |---+---+------+------+------+------+------+------+------+------|
   |   | 6 | Open | Open |Closed| Open | Open | Open |Closed| Open |
   |---+---+------+------+------+------+------+------+------+------|
   |   | 7 | Open | Open | Open |Closed| Open | Open | Open |Closed|
   |---------------------------------------------------------------|
   |     Note: Settings must match J5 settings (DMA table 1).      |
   +---------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 BASE I/O ADDRESS SELECTION                 |
   |------------------------------------------------------------|
   |    Setting    |     J7/2     |     J7/3     |     J7/4     |
   |---------------+--------------+--------------+--------------|
   |   |    130    |    Closed    |     Open     |    Closed    |
   |---+-----------+--------------+--------------+--------------|
   |   |    134    |     Open     |     Open     |    Closed    |
   |---+-----------+--------------+--------------+--------------|
   |   |    230    |    Closed    |    Closed    |     Open     |
   |---+-----------+--------------+--------------+--------------|
   |   |    234    |     Open     |    Closed    |     Open     |
   |---+-----------+--------------+--------------+--------------|
   |>> |    330    |    Closed    |     Open     |     Open     |
   |---+-----------+--------------+--------------+--------------|
   |   |    334    |     Open     |     Open     |     Open     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   BIOS ADDRESS SELECTION                   |
   |------------------------------------------------------------|
   |       Setting        |       J7/7       |       J7/8       |
   |----------------------+------------------+------------------|
   |   |      C800h       |      Closed      |      Closed      |
   |---+------------------+------------------+------------------|
   |   |      CC00h       |      Closed      |       Open       |
   |---+------------------+------------------+------------------|
   |   |      D800h       |       Open       |      Closed      |
   |---+------------------+------------------+------------------|
   |>> |      DC00h       |       Open       |       Open       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              FLOPPY DRIVE INTERRUPT SELECTION              |
   |------------------------------------------------------------|
   |          IRQ          |       J8/6       |      J8/7       |
   |-----------------------+------------------+-----------------|
   |>>   |      IRQ6       |      Closed      |      Open       |
   |-----+-----------------+------------------+-----------------|
   |     |      IRQ10      |       Open       |     Closed      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  INTERRUPT SELECTION (1)                   |
   |------------------------------------------------------------|
   |       IRQ       |     J5/9     |    J5/10    |    J5/11    |
   |-----------------+--------------+-------------+-------------|
   |   |    IRQ9     |     Open     |    Open     |    Open     |
   |---+-------------+--------------+-------------+-------------|
   |   |    IRQ10    |    Closed    |    Open     |    Open     |
   |---+-------------+--------------+-------------+-------------|
   |>> |    IRQ11    |     Open     |   Closed    |    Open     |
   |---+-------------+--------------+-------------+-------------|
   |   |    IRQ12    |    Closed    |   Closed    |    Open     |
   |---+-------------+--------------+-------------+-------------|
   |   |    IRQ14    |     Open     |    Open     |   Closed    |
   |---+-------------+--------------+-------------+-------------|
   |   |    IRQ15    |    Closed    |    Open     |   Closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  INTERRUPT SELECTION (2)                   |
   |------------------------------------------------------------|
   |   IRQ   |  J9/9  | J9/10  | J9/11  | J9/12 | J9/13 | J9/14 |
   |---------+--------+--------+--------+-------+-------+-------|
   | | IRQ9  | Closed |  Open  |  Open  | Open  | Open  | Open  |
   |-+-------+--------+--------+--------+-------+-------+-------|
   | | IRQ10 |  Open  | Closed |  Open  | Open  | Open  | Open  |
   |-+-------+--------+--------+--------+-------+-------+-------|
   |>>| IRQ11 |  Open  |  Open  | Closed | Open  | Open  | Open  |
   |-+-------+--------+--------+--------+-------+-------+-------|
   | | IRQ12 |  Open  |  Open  |  Open  |Closed | Open  | Open  |
   |-+-------+--------+--------+--------+-------+-------+-------|
   | | IRQ14 |  Open  |  Open  |  Open  | Open  |Closed | Open  |
   |-+-------+--------+--------+--------+-------+-------+-------|
   | | IRQ15 |  Open  |  Open  |  Open  | Open  | Open  |Closed |
   |------------------------------------------------------------|
   |     Note:The above settings must match J5 settings         |
   |     (interrupt selection table 1).                         |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                IOCHRDY WAIT STATE SELECTION                |
   |------------------------------------------------------------|
   |        Setting         |      J7/5       |      J7/6       |
   |------------------------+-----------------+-----------------|
   |>> |      Disabled      |      Open       |      Open       |
   |---+--------------------+-----------------+-----------------|
   |   |       100ns        |     Closed      |      Open       |
   |---+--------------------+-----------------+-----------------|
   |   |       200ns        |      Open       |     Closed      |
   |---+--------------------+-----------------+-----------------|
   |   |       300ns        |     Closed      |     Closed      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               MISCELLANEOUS TECHNICAL NOTES                |
   |------------------------------------------------------------|
   | Remove terminating resistors when connecting external and  |
   | internal devices.                                          |
   +------------------------------------------------------------+