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# NCL AMERICA
NCL 538, NCL 539
+------------------------------------------------------------+
+------------------------------------------------------------+
Data bus: 16-bit, ISA
Size: Half-length, full-height card
Hard drives supported: Two AT Interface (IDE) drives
Floppy drives supported: NCL 538: Two 360KB, 720KB, 1.2MB, or
NCL 539: None
Maximum heads/cyl.: 16 heads and 2048 cylinders
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location |
|-------------------------------------------------+----------|
| 34-pin control cable connector-floppy drive | CN1 |
| (NCL 538 only) | |
|-------------------------------------------------+----------|
| 40-pin AT Interface (IDE) control cable | CN2 |
| connector-internal | |
|-------------------------------------------------+----------|
| 4-pin connector-drive active LED | CN3 |
|-------------------------------------------------+----------|
| 5-pin connector-DC power | JP11 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|------------------------------------+----------+------------|
| » | Floppy drive port address is | JP1 | pins 1 & 2 |
| | 3F2-3F7h (538 only) | | closed |
|---+--------------------------------+----------+------------|
| | Floppy drive port address is | JP1 | pins 2 & 3 |
| | 372-377h (538 only) | | closed |
|---+--------------------------------+----------+------------|
| » | BIOS address is C800h | JP2 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+----------+------------|
| | BIOS address is CC00h | JP2 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+----------+------------|
| » | Floppy Drive Interrupt is IRQ6 | JP3 | pins 1 & 2 |
| | (538 only) | | closed |
|---+--------------------------------+----------+------------|
| | Floppy Drive Interrupt is | JP3 | pins 2 & 3 |
| | IRQ10 (538 only) | | closed |
|---+--------------------------------+----------+------------|
| » | Floppy Drive DMA Acknowledge | JP4 | pins 1 & 2 |
| | is DACK2 (538 only) | | closed |
|---+--------------------------------+----------+------------|
| | Floppy Drive DMA Acknowledge | JP4 | pins 2 & 3 |
| | is DACK3 (538 only) | | closed |
|---+--------------------------------+----------+------------|
| » | IRQ Non-buffered | JP5 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+----------+------------|
| | IRQ buffered | JP5 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+----------+------------|
| » | Floppy Drive DMA Request is | JP6 | pins 1 & 2 |
| | DRQ2 (538 only) | | closed |
|---+--------------------------------+----------+------------|
| | Floppy Drive DMA Request is | JP6 | pins 2 & 3 |
| | DRQ3 (538 only) | | closed |
|---+--------------------------------+----------+------------|
| » | Hard Drive Interrupt is IRQ14 | JP7 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+----------+------------|
| | Hard Drive Interrupt is IRQ15 | JP7 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+----------+------------|
| » | Zero wait state enabled | JP8 | open |
|---+--------------------------------+----------+------------|
| | Zero wait state disabled | JP8 | closed |
|---+--------------------------------+----------+------------|
| » | BIOS enabled | JP9 | closed |
|---+--------------------------------+----------+------------|
| | BIOS disabled | JP9 | open |
|---+--------------------------------+----------+------------|
| » | Hard drive port address is | JP10 | open |
| | 1F0-1F7h | | |
|---+--------------------------------+----------+------------|
| | Hard drive port address is | JP10 | closed |
| | 170-177h | | |
|---+--------------------------------+----------+------------|
| » | Normal operation | JP11 | open |
|---+--------------------------------+----------+------------|
| | Self-diagnostic mode | JP11 | closed |
+------------------------------------------------------------+