NCL AMERICA
===========

   NCL 5475, NCL 5476

   +------------------------------------------------------------+
   +------------------------------------------------------------+

   Data bus:  16-bit, ISA

   Size:  Half-length, full-height card

   Hard drives supported:  Two ST506/412 MFM drives

   Floppy drives supported:  NCL 5475: Two 360KB, 720KB, 1.2MB,
   or 1.44MB

   NCL 5476: None

<gopher://bitreich.org/I/th99/c/M-O/20460-1.png>
   

   +------------------------------------------------------------+
   |                        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 5475   | CN4 |
   | only)                                                |     |
   |------------------------------------------------------+-----|
   | 4-pin connector-drive active LED                     | CN5 |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function              | Location |  Setting   |
   |------------------------------------+----------+------------|
   |>> | Hard drive port address is     |   JP1    | pins 1 & 2 |
   |   | 1F0-1F7h                       |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | Hard drive port address is     |   JP1    | pins 2 & 3 |
   |   | 170-177h                       |          |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | Floppy drive port address is   |   JP2    |   closed   |
   |   | 3F2-3F7h (5475 only)           |          |            |
   |---+--------------------------------+----------+------------|
   |   | Floppy drive port address is   |   JP2    |    open    |
   |   | 372-377h (5475 only)           |          |            |
   |---+--------------------------------+----------+------------|
   |>> | Unit select turn on the LED    |   JP6    |    open    |
   |---+--------------------------------+----------+------------|
   |   | Drive select turn on the LED   |   JP6    |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | Hard Drive Interrupt is IRQ14  |   JP9    | pins 2 & 3 |
   |   | (Hard-wired)                   |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | Hard Drive Interrupt is IRQ15  |   JP9    | pins 1 & 2 |
   |   |                                |          |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               MISCELLANEOUS TECHNICAL NOTES                |
   |------------------------------------------------------------|
   | Jumpers JP3, JP4, JP5, JP7, and JP8 are factory configured |
   |            in the open position - do not alter.            |
   +------------------------------------------------------------+