TEXT View Source
# STORAGE DIMENSIONS
SDC802
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 8-bit ISA
Card Size Half-length, full-height
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location | Function | Location |
|-------------+----------+------------------------+----------|
| 25-pin SCSI | CN1 | 34-pin cable connector | CN3 |
| connector - | | - floppy drive | |
| external | | | |
|-------------+----------+------------------------+----------|
| 50-pin SCSI | CN2 | | |
| connector - | | | |
| internal | | | |
+------------------------------------------------------------+
+---------------------------------------------------------------+
| BIOS ADDRESS SELECTION |
|---------------------------------------------------------------|
|Setting|JP1/1 |JP1/2 |JP1/3 |JP1/4 |JP1/5 |JP1/6 |JP1/7 |JP1/8 |
|-------+------+------+------+------+------+------+------+------|
| C000h |Closed| Open | Open | Open | Open | Open | Open | Open |
|-------+------+------+------+------+------+------+------+------|
| C400h | Open |Closed| Open | Open | Open | Open | Open | Open |
|-------+------+------+------+------+------+------+------+------|
| C800h | Open | Open |Closed| Open | Open | Open | Open | Open |
|-------+------+------+------+------+------+------+------+------|
| CC00h | Open | Open | Open |Closed| Open | Open | Open | Open |
|-------+------+------+------+------+------+------+------+------|
| D000h | Open | Open | Open | Open |Closed| Open | Open | Open |
|-------+------+------+------+------+------+------+------+------|
| D400h | Open | Open | Open | Open | Open |Closed| Open | Open |
|-------+------+------+------+------+------+------+------+------|
| D800h | Open | Open | Open | Open | Open | Open |Closed| Open |
|-------+------+------+------+------+------+------+------+------|
| DC00h | Open | Open | Open | Open | Open | Open | Open |Closed|
|---------------------------------------------------------------|
| Note:To disable BIOS remove chip U11 (not diagrammed). |
+---------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | JP2/1 | JP2/2 | JP2/3 | JP2/4 | JP2/5 |
|---------------+--------+--------+--------+--------+--------|
| | IRQ3 | Open | Closed | Open | Open | Open |
|---+-----------+--------+--------+--------+--------+--------|
| | IRQ4 | Open | Open | Closed | Open | Open |
|---+-----------+--------+--------+--------+--------+--------|
| | IRQ5 | Open | Open | Open | Closed | Open |
|---+-----------+--------+--------+--------+--------+--------|
| | IRQ7 | Open | Open | Open | Open | Closed |
|---+-----------+--------+--------+--------+--------+--------|
| » | IRQ9/None | Closed | Open | Open | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| WAIT STATE SELECTION |
|------------------------------------------------------------|
| Setting | JP3/1 | JP3/2 |
|----------------------+------------------+------------------|
| » | Normal | Closed | Open |
|---+------------------+------------------+------------------|
| | Zero | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOPPY INTERFACE CONFIGURATION |
|------------------------------------------------------------|
| Setting | JP4/1 | JP4/2 |
|------------------------+-----------------+-----------------|
| » | Enabled | Open | Closed |
|---+--------------------+-----------------+-----------------|
| | Disabled | Closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOPPY DRIVE SPEED SELECTION |
|------------------------------------------------------------|
| Setting | JP5/1 | JP5/2 |
|------------------------+-----------------+-----------------|
| » | Single speed | Closed | Open |
|---+--------------------+-----------------+-----------------|
| | Dual speed | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOPPY DRIVE PRECOMPENSATION SELECTION |
|------------------------------------------------------------|
| Setting | JP6/1 | JP6/2 |
|------------------------+------------------+----------------|
| » | 125ns | Closed | Open |
|------+-----------------+------------------+----------------|
| | 187ns | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOPPY DRIVE STANDARD/IBM COMBO MODE SELECTION |
|------------------------------------------------------------|
| Setting | JP7/1 | JP7/2 |
|---------------------------+----------------+---------------|
| » | IBM Combo card | Open | Closed |
|------+--------------------+----------------+---------------|
| | Standard | Closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTES |
|------------------------------------------------------------|
| Remove terminating resistors when connecting external and |
| internal devices at the same time. |
+------------------------------------------------------------+