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# NCL AMERICA
NCL 540, NCL 541
+------------------------------------------------------------+
+------------------------------------------------------------+
Data bus: 8-bit, ISA
Size: Half-length, full-height card
Hard drives supported: Up to seven SCSI devices
Floppy drives supported: NCL 540: Two 360KB, 720KB, 1.2MB, or
NCL 541: None
Maximum heads/cyl.: 16 heads and 2048 cylinders
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location |
|-------------------------------------------------+----------|
| 34-pin data cable connector-floppy drive (NCL | CN1 |
| 540 only) | |
|-------------------------------------------------+----------|
| 50-pin SCSI connector-internal | CN2 |
|-------------------------------------------------+----------|
| 25-pin SCSI connector-external | CN3 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|------------------------------------+----------+------------|
| » | Floppy drive port address is | JP1 | pins 1 & 2 |
| | 3F2-3F7h (540 only) | | closed |
|---+--------------------------------+----------+------------|
| | Floppy drive port address is | JP1 | pins 1 & 2 |
| | 372-377h (540 only) | | open |
|---+--------------------------------+----------+------------|
| » | Factory configured - do not | JP1 | pins 3 & 4 |
| | alter | | closed |
|---+--------------------------------+----------+------------|
| » | Zero wait state disabled | JP5 | open |
|---+--------------------------------+----------+------------|
| | Zero wait state enabled | JP5 | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT REQUEST |
|------------------------------------------------------------|
| IRQ | Jumper JP2 | Jumper JP3 | Jumper JP4 |
|--------------+---------------+--------------+--------------|
| » | IRQ 2 | open | open | closed |
|---+----------+---------------+--------------+--------------|
| | IRQ5 | open | closed | open |
|---+----------+---------------+--------------+--------------|
| | IRQ7 | closed | open | open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIOS ADDRESS |
|------------------------------------------------------------|
| Address | Jumper JP6 | Jumper JP7 | Jumper JP8 |
|--------------+---------------+--------------+--------------|
| » | C800h | open | open | closed |
|---+----------+---------------+--------------+--------------|
| | CC00h | closed | open | closed |
|---+----------+---------------+--------------+--------------|
| | D800h | open | open | open |
|---+----------+---------------+--------------+--------------|
| | DC00h | closed | open | open |
|---+----------+---------------+--------------+--------------|
| | E000h | open | closed | open |
|---+----------+---------------+--------------+--------------|
| | E400h | closed | closed | open |
|---+----------+---------------+--------------+--------------|
| | D000h | open | closed | closed |
|---+----------+---------------+--------------+--------------|
| | D400h | closed | closed | closed |
+------------------------------------------------------------+