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# ADVANCED DIGITAL INFORMATION CORPORATION
ISA DCB
Data bus: 16-bit, ISA
Size: Three-quarter length, full-height card
Hard drives supported: Up to seven SCSI devices
Floppy drives supported: Two 360KB, 720KB, 1.2 MB or 1.44 MB
drives
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location |
|---------------------------------------------+--------------|
| 4-pin connector-drive active LED | CN1 |
|---------------------------------------------+--------------|
| 34-pin data cable connector - floppy drives | CN2 |
|---------------------------------------------+--------------|
| 50-pin SCSI connector - internal | CN3 |
|---------------------------------------------+--------------|
| 50-pin SCSI connector - external | CN4 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SCSI ADDRESS |
|------------------------------------------------------------|
| SCSI ID | SW1/Switch 1 | SW1/Switch 2 | SW1/Switch 3 |
|------------+---------------+---------------+---------------|
| » | 7 | on | on | on |
|----+-------+---------------+---------------+---------------|
| | 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|-----------------------------------+--------------+---------|
| » | Floppy drive port address | JP14 | open |
| | 3F0-3F7h | | |
|---+-------------------------------+--------------+---------|
| | Floppy drive port address | JP14 | closed |
| | 370-377h | | |
|---+-------------------------------+--------------+---------|
| » | Floppy drive disabled | JP15 & JP16 | open |
|---+-------------------------------+--------------+---------|
| | Floppy drive enabled | JP15 & JP16 | closed |
|---+-------------------------------+--------------+---------|
| » | I/O channel ready disabled | JP17/pins 1 | closed |
| | | & 2 | |
|---+-------------------------------+--------------+---------|
| » | I/O channel ready enabled | JP17/pins 2 | closed |
| | | & 3 | |
|---+-------------------------------+--------------+---------|
| » | SCSI Parity check enabled | SW1/switch 4 | on |
| | (BT-542 only) | | |
|---+-------------------------------+--------------+---------|
| | SCSI Parity check disabled | SW1/switch 4 | off |
| | (BT-542 only) | | |
|---+-------------------------------+--------------+---------|
| » | SCSI Auto Sense function | SW1/switch 5 | on |
| | enabled | | |
|---+-------------------------------+--------------+---------|
| | SCSI Auto Sense function | SW1/switch 5 | off |
| | disabled | | |
|---+-------------------------------+--------------+---------|
| » | Synchronous transfer | SW1/switch 6 | on |
| | initiation from controller | | |
| | disabled | | |
|---+-------------------------------+--------------+---------|
| | Synchronous transfer | SW1/switch 6 | off |
| | intitiation from controller | | |
| | enabled | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA CHANNEL |
|------------------------------------------------------------|
| DMA | SW1/Switch 7 | SW1/Switch 8 |
|--------------------+-------------------+-------------------|
| » | 5 | on | on |
|---+----------------+-------------------+-------------------|
| | 6 | off | on |
|---+----------------+-------------------+-------------------|
| | 7 | on | off |
|---+----------------+-------------------+-------------------|
| | Disabled | off | off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| I/O PORT ADDRESS |
|------------------------------------------------------------|
| Address | SW2/Switch 1 | SW2/Switch 2 | SW2/Switch 3 |
|---------------+--------------+--------------+--------------|
| » | 330h-333h | on | on | on |
|---+-----------+--------------+--------------+--------------|
| | 134h-137h | on | off | off |
|---+-----------+--------------+--------------+--------------|
| | 234h-237h | off | on | off |
|---+-----------+--------------+--------------+--------------|
| | 334h-337h | on | on | off |
|---+-----------+--------------+--------------+--------------|
| | 130h-133h | on | off | on |
|---+-----------+--------------+--------------+--------------|
| | 230h-233h | off | on | on |
|---+-----------+--------------+--------------+--------------|
| | Reserved | off | off | on |
|---+-----------+--------------+--------------+--------------|
| | Reserved | off | off | off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIOS ADDRESS BT-542B |
|------------------------------------------------------------|
| Address | SW2/Switch 4 | SW2/Switch 5 |
|--------------------+-------------------+-------------------|
| » | DC000h | on | on |
|---+----------------+-------------------+-------------------|
| | D8000h | off | on |
|---+----------------+-------------------+-------------------|
| | C8000h | off | off |
|---+----------------+-------------------+-------------------|
| | Disabled | on | off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUS TRANSFER RATE BT-542B |
|------------------------------------------------------------|
| Rate | Jumper JP11 | Jumper JP13 |
|-----------------------+------------------+-----------------|
| » | 5.0MB/sec | open | open |
|-------+---------------+------------------+-----------------|
| » | 5.7MB/sec | open | closed |
|-------+---------------+------------------+-----------------|
| » | 6.7MB/sec | closed | open |
|-------+---------------+------------------+-----------------|
| » | 8.0MB/sec | closed | closed |
|------------------------------------------------------------|
| Note: It is recommended that you leave JP11 and JP13 open |
| at all times. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT REQUEST CONFIGURATION |
|------------------------------------------------------------|
| IRQ |SW2/Switch 6|SW2/Switch 7|SW2/Switch 8| JP3 |
|------------+------------+------------+------------+--------|
|»| IRQ11 | on | on | on | open |
|-+----------+------------+------------+------------+--------|
| | IRQ9 | on | off | on | open |
|-+----------+------------+------------+------------+--------|
| | IRQ10 | off | on | on | open |
|-+----------+------------+------------+------------+--------|
| | IRQ12 | off | off | on | open |
|-+----------+------------+------------+------------+--------|
| | IRQ14 | on | on | off | open |
|-+----------+------------+------------+------------+--------|
| | IRQ15 | off | on | off | closed |
|-+----------+------------+------------+------------+--------|
| | Reserved | off | off | off | N/A |
|-+----------+------------+------------+------------+--------|
| | Reserved | on | off | off | N/A |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT REQUEST CONFIGURATION (CONTINUED) |
|------------------------------------------------------------|
| IRQ | JP4 | JP5 | JP6 | JP7 | JP8 |
|---------------+--------+--------+--------+--------+--------|
| » | IRQ11 | open | open | closed | open | open |
|---+-----------+--------+--------+--------+--------+--------|
| » | IRQ9 | open | open | open | open | closed |
|---+-----------+--------+--------+--------+--------+--------|
| | IRQ10 | open | open | open | closed | open |
|---+-----------+--------+--------+--------+--------+--------|
| | IRQ12 | open | closed | open | open | open |
|---+-----------+--------+--------+--------+--------+--------|
| | IRQ14 | closed | open | open | open | open |
|---+-----------+--------+--------+--------+--------+--------|
| | IRQ15 | open | open | open | open | open |
|---+-----------+--------+--------+--------+--------+--------|
| | Reserved | N/A | N/A | N/A | N/A | N/A |
|---+-----------+--------+--------+--------+--------+--------|
| | Reserved | N/A | N/A | N/A | N/A | N/A |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTE |
|------------------------------------------------------------|
| The ISA DCB can operate alone or paired with another ISA |
| DCB. If you are using a pair of ISA DCB’s, please use the |
| following defaults for the second card: SCSI ID: 7, SCSI |
| Parity Check: Disabled, Auto-sense: Enabled, SCSI sych |
| negotiation: Enabled, DMA Channel: 6, I/O Address: 334h, |
| Host BIOS: Disabled, Interrupt: IRQ12. |
+------------------------------------------------------------+