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# NCL AMERICA
NCL 5525-50, NCL 5526-50
Data bus: 16-bit, ISA
Size: Half-length, full-height card
Hard drives supported: Two ST506/412 MFM drives
Floppy drives supported: NCL 5525-50:Two 360KB, 720KB, 1.2MB,
or 1.44MB
NCL 5526-50:None
Maximum heads/cyl.: 16 heads and 2048 cylinders
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| 34-pin control cable connector-hard drive | CN1 |
|------------------------------------------------------+-----|
| 20-pin data cable connector-drive 0 | CN2 |
|------------------------------------------------------+-----|
| 20-pin data cable connector-drive 1 | CN3 |
|------------------------------------------------------+-----|
| 34-pin data cable connector-floppy drive (NCL 5355 | CN4 |
| only) | |
|------------------------------------------------------+-----|
| 4-pin connector-drive active LED | CN5 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|---------------------------------------+----------+---------|
| » | Hard drive port address is | JP0 | open |
| | 1F0-1F7h | | |
|---+-----------------------------------+----------+---------|
| | Hard drive port address is | JP0 | closed |
| | 170-177h | | |
|---+-----------------------------------+----------+---------|
| » | Factory configured - do not alter | JP1 | open |
|---+-----------------------------------+----------+---------|
| » | LED always lit once unit is | JP2 | open |
| | selected | | |
|---+-----------------------------------+----------+---------|
| | LED is lit only during access | JP2 | closed |
|---+-----------------------------------+----------+---------|
| » | Factory configured - do not alter | JP3 | open |
|---+-----------------------------------+----------+---------|
| » | Floppy drive port address is | JP4 | closed |
| | 3F0-3F7h | | |
|---+-----------------------------------+----------+---------|
| | Floppy drive port address is | JP4 | open |
| | 370-377h | | |
|---+-----------------------------------+----------+---------|
| » | Factory configured - do not alter | JP5 | open |
+------------------------------------------------------------+