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

   NCL 5275, NCL 5276

   Data bus: 16-bit, ISA

   Size: Half-length, full-height card

   Hard drives supported:  Two ST506/412 RLL drives

   Floppy drives supported: NCL 5275: Two 360KB, 720KB, 1.2MB, or


              NCL 5276: None

   Maximum heads/cyl.: 16 heads and 2048 cylinders

<gopher://bitreich.org/I/th99/c/M-O/20148-1.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     |     CN4     |
   |----------------------------------------------+-------------|
   | 4-pin connector-drive active LED             |     CN5     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                USER CONFIGURABLE SETTINGS                  |
   |------------------------------------------------------------|
   |              Function              | Location |  Setting   |
   |------------------------------------+----------+------------|
   |>> | Hard Drive Interrupt is IRQ14  |   JP1    | pins 2 & 3 |
   |   | (hard wired)                   |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | Hard Drive Interrupt is IRQ15  |   JP1    | pins 1 & 2 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | INDEX signal is used directly  |   JP2    |    open    |
   |   | (5276 only)                    |          |            |
   |---+--------------------------------+----------+------------|
   |   | INDEX signal is selected by    |   JP2    |   closed   |
   |   | SYNC signal (5276 only)        |          |            |
   |---+--------------------------------+----------+------------|
   |>> | Floppy drive port address is   |   JP3    |   closed   |
   |   | 3F0-3F7h (5276 only)           |          |            |
   |---+--------------------------------+----------+------------|
   |   | Floppy drive port address is   |   JP3    |    open    |
   |   | 370-377h (5276 only)           |          |            |
   |---+--------------------------------+----------+------------|
   |>> | Factory configured - do not    |   JP4    |    open    |
   |   | alter                          |          |            |
   |---+--------------------------------+----------+------------|
   |>> | Factory configured - do not    |   JP5    |    open    |
   |   | alter                          |          |            |
   |---+--------------------------------+----------+------------|
   |>> | 11 bit ECC burst length        |   JP6    |   closed   |
   |---+--------------------------------+----------+------------|
   |   | 5 bit ECC burst length         |   JP6    |    open    |
   |---+--------------------------------+----------+------------|
   |>> | Factory configured - do not    |   JP7    |    open    |
   |   | alter                          |          |            |
   |---+--------------------------------+----------+------------|
   |>> | LED is lit only during access  |   JP8    |    open    |
   |---+--------------------------------+----------+------------|
   |   | LED always lit once unit is    |   JP8    |   closed   |
   |   | selected                       |          |            |
   |---+--------------------------------+----------+------------|
   |>> | BIOS enabled                   |   JP9    |   closed   |
   |---+--------------------------------+----------+------------|
   |   | BIOS disabled                  |   JP9    |    open    |
   |---+--------------------------------+----------+------------|
   |>> | Hard drive port address is     |   JP10   | pins 1 & 2 |
   |   | 1F0-1F7h                       |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | Hard drive port address is     |   JP10   | pins 2 & 3 |
   |   | 170-177h                       |          |   closed   |
   |---+--------------------------------+----------+------------|
   |>> | BIOS address is C800h          |   JP11   | pins 1 & 2 |
   |   |                                |          |   closed   |
   |---+--------------------------------+----------+------------|
   |   | BIOS address is D800h          |   JP11   | pins 2 & 3 |
   |   |                                |          |   closed   |
   +------------------------------------------------------------+