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# 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
IMG IMG 1
+------------------------------------------------------------+
| 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. |
+------------------------------------------------------------+