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# STORAGE DIMENSIONS
SDC1602A
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 |
|-----------------------------------------+-------+----------|
| » | Factory configured - do not alter | J5/1 | Open |
|---+-------------------------------------+-------+----------|
| » | Factory configured - do not alter | J5/2 | Closed |
|---+-------------------------------------+-------+----------|
| » | Factory configured - do not alter | J5/3 | Open |
|---+-------------------------------------+-------+----------|
| » | Factory configured - do not alter | J5/4 | Open |
|---+-------------------------------------+-------+----------|
| » | Factory configured - do not alter | J5/5 | Closed |
|---+-------------------------------------+-------+----------|
| » | Factory configured - do not alter | J5/6 | Closed |
|---+-------------------------------------+-------+----------|
| » | Factory configured - do not alter | J5/7 | Open |
|---+-------------------------------------+-------+----------|
| » | Factory configured - do not alter | J5/8 | Open |
|---+-------------------------------------+-------+----------|
| » | Factory configured - do not alter | J6/4 | Open |
| | (Interrupt selection) | | |
|---+-------------------------------------+-------+----------|
| » | Factory configured - do not alter | J6/5 | Closed |
| | (Interrupt selection) | | |
|---+-------------------------------------+-------+----------|
| » | Factory configured - do not alter | J6/6 | Open |
| | (DMA selection) | | |
|---+-------------------------------------+-------+----------|
| » | Factory configured - do not alter | J6/7 | Open |
| | (DMA selection) | | |
|---+-------------------------------------+-------+----------|
| » | SCSI parity check disabled | J6/8 | Open |
|---+-------------------------------------+-------+----------|
| | SCSI parity check enabled | J6/8 | Closed |
|---+-------------------------------------+-------+----------|
| » | Floppy drive interface enabled | J7/1 | Closed |
|---+-------------------------------------+-------+----------|
| | Floppy drive interface disabled | J7/1 | Open |
|---+-------------------------------------+-------+----------|
| » | Factory configured - do not alter | J7/2 | Closed |
| | (DMA 2 or 3 selection) | | |
|---+-------------------------------------+-------+----------|
| » | Factory configured - do not alter | J7/3 | Open |
| | (DMA 2 or 3 selection) | | |
|---+-------------------------------------+-------+----------|
| » | Factory configured - do not alter | J7/4 | Closed |
| | (DMA 2 or 3 selection) | | |
|---+-------------------------------------+-------+----------|
| » | Factory configured - do not alter | J7/5 | Open |
| | (DMA 2 or 3 selection) | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS (CON’T) |
|------------------------------------------------------------|
| Function | Label | Position |
|-----------------------------------------+-------+----------|
| » | Floppy drive dual speed enabled | J7/8 | Closed |
|---+-------------------------------------+-------+----------|
| | Floppy drive dual speed disabled | J7/8 | Open |
|---+-------------------------------------+-------+----------|
| » | Primary I/O port address 340h | J9/5 | Open |
| | enabled | | |
|---+-------------------------------------+-------+----------|
| | Secondary I/O port address 140h | J9/5 | Closed |
| | enabled | | |
|---+-------------------------------------+-------+----------|
| » | Factory configured - do not alter | J9/6 | Closed |
| | (BIOS address selection) | | |
|---+-------------------------------------+-------+----------|
| » | Factory configured - do not alter | J9/7 | Closed |
| | (BIOS address selection) | | |
|---+-------------------------------------+-------+----------|
| » | SCSI BIOS enabled | J9/8 | Closed |
|---+-------------------------------------+-------+----------|
| | SCSI BIOS disabled | J9/8 | Open |
|------------------------------------------------------------|
| Note:Disable BIOS when SDC1602A is a secondary card |
| in the system. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SCSI ID SELECTION |
|------------------------------------------------------------|
| SCSI ID | J6/1 | J6/2 | J6/3 |
|-----------------+--------------+-------------+-------------|
| » | 7 | Closed | Closed | Closed |
|------------------------------------------------------------|
| Note:Other settings are unidentified. |
+------------------------------------------------------------+
+---------------------------------------------------------------+
| DMA CHANNEL SELECTION |
|---------------------------------------------------------------|
|Channel| J8/1 | J8/2 | J8/3 | J8/4 | J8/5 | J8/6 | J8/7 | J8/8 |
|-------+------+------+------+------+------+------+------+------|
|» | 0 | Open | Open | Open |Closed| Open | Open | Open |Closed|
|---+---+------+------+------+------+------+------+------+------|
| | 5 | Open | Open |Closed| Open | Open | Open |Closed| Open |
|---+---+------+------+------+------+------+------+------+------|
| | 6 | Open |Closed| Open | Open | Open |Closed| Open | Open |
|---+---+------+------+------+------+------+------+------+------|
| | 7 |Closed| Open | Open | Open |Closed| Open | Open | Open |
+---------------------------------------------------------------+
+------------------------------------------------------------+
| FLOPPY DRIVE INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | J7/6 | J7/7 |
|-----------------------+------------------+-----------------|
| » | IRQ6 | Closed | Open |
|-----+-----------------+------------------+-----------------|
| | IRQ10 | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | J9/1 | J9/2 | J9/3 | J9/4 |
|--------------+-----------+-----------+----------+----------|
| | IRQ9 | Open | Open | Open | Closed |
|---+----------+-----------+-----------+----------+----------|
| | IRQ10 | Open | Open | Closed | Open |
|---+----------+-----------+-----------+----------+----------|
| » | IRQ11 | Open | Closed | Open | Open |
|---+----------+-----------+-----------+----------+----------|
| | IRQ12 | Closed | Open | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTES |
|------------------------------------------------------------|
| Remove terminating resistors when connecting external and |
| internal devices. |
+------------------------------------------------------------+