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# BUSLOGIC, INC.
BT-542S, BT-542D
Data bus: 16-bit, ISA
Size: Full-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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|-----------------------------------+--------------+---------|
| » | Floppy drive port address | JP14 | open |
| | 3F0-3F7h | | |
|---+-------------------------------+--------------+---------|
| | Floppy drive port address | JP14 | closed |
| | 370-377h | | |
|---+-------------------------------+--------------+---------|
| » | Floppy drive enabled | JP15 & JP16 | closed |
|---+-------------------------------+--------------+---------|
| | Floppy drive disabled | JP15 & JP16 | open |
|---+-------------------------------+--------------+---------|
| » | SCSI Parity check enabled | SW1/switch 4 | on |
|---+-------------------------------+--------------+---------|
| | SCSI Parity check disabled | SW1/switch 4 | off |
|---+-------------------------------+--------------+---------|
| » | 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 | | |
| | isabled | | |
|---+-------------------------------+--------------+---------|
| | Synchronous transfer | SW1/switch 6 | off |
| | intitiation from controller | | |
| | enabled | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SCSI ADDRESS |
|------------------------------------------------------------|
| SCSI I.D. | SW1/switch 1 | SW1/switch 2 | SW1/switch 3 |
|------------+---------------+---------------+---------------|
| | 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 |
|-----+------+---------------+---------------+---------------|
| » | 7 | on | on | on |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|---+-----------+--------------+--------------+--------------|
| | 230h-233h | off | on | on |
|---+-----------+--------------+--------------+--------------|
| | 130h-133h | on | off | on |
|---+-----------+--------------+--------------+--------------|
| | Reserved | off | off | off |
|---+-----------+--------------+--------------+--------------|
| | Reserved | off | off | on |
+------------------------------------------------------------+
+------------------------------------------------------------+
| IRQ SELECT |
|------------------------------------------------------------|
| IRQ |JP3 - JP8 |SW2/switch 6|SW2/switch 7|SW2/switch 8|
|----------+----------+------------+------------+------------|
|»| IRQ11 |JP6 closed| on | on | on |
|-+--------+----------+------------+------------+------------|
| |Reserved| N/A | off | off | off |
|-+--------+----------+------------+------------+------------|
| |Reserved| N/A | on | off | off |
|-+--------+----------+------------+------------+------------|
| | IRQ9 |JP8 closed| on | off | on |
|-+--------+----------+------------+------------+------------|
| | IRQ10 |JP7 closed| off | on | on |
|-+--------+----------+------------+------------+------------|
| | IRQ12 |JP5 closed| off | off | on |
|-+--------+----------+------------+------------+------------|
| | IRQ14 |JP4 closed| on | on | off |
|-+--------+----------+------------+------------+------------|
| | IRQ15 |JP3 closed| off | on | off |
+------------------------------------------------------------+
. . . continued from previous page
BUSLOGIC, INC.
BT-542S, BT-542D
. . . continued from previous page
+------------------------------------------------------------+
| BIOS BASE ADDRESS |
|------------------------------------------------------------|
| Address | SW3/switch 3 | SW3/switch 4 | SW3/switch 5 |
|------------+---------------+---------------+---------------|
| Disabled | off | off | off |
|------------+---------------+---------------+---------------|
| Reserved | on | off | off |
|------------+---------------+---------------+---------------|
| C8000h | off | on | off |
|------------+---------------+---------------+---------------|
| CC000h | on | on | off |
|------------+---------------+---------------+---------------|
| D0000h | off | off | on |
|------------+---------------+---------------+---------------|
| D4000h | on | off | on |
|------------+---------------+---------------+---------------|
| D8000h | off | on | on |
|------------+---------------+---------------+---------------|
| DC000h | on | on | on |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA CHANNEL |
|------------------------------------------------------------|
| DRQ | SW1/switch 7 | SW1/switch 8 |
|--------------------+-------------------+-------------------|
| » | 5 | on | on |
|---+----------------+-------------------+-------------------|
| | 6 | off | on |
|---+----------------+-------------------+-------------------|
| | 7 | on | off |
|---+----------------+-------------------+-------------------|
| | Disabled | off | off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUS TRANSFER RATE |
|------------------------------------------------------------|
| Rate | SW3/switch 1 | SW3/switch 2 |
|-----------------------+------------------+-----------------|
| » | 5.0 MB/second | on | on |
|---+-------------------+------------------+-----------------|
| | 5.7 MB/second | off | on |
|---+-------------------+------------------+-----------------|
| | 6.7 MB/second | on | off |
|---+-------------------+------------------+-----------------|
| | 8.0 MB/second | off | off |
+------------------------------------------------------------+