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       # NCL AMERICA
       
          NCL 536, NCL 537
       
          +------------------------------------------------------------+
          |------------------------------------------------------------|
          | Data bus:     | 16-bit, ISA                                |
          |---------------+--------------------------------------------|
          | Size:         | Half-length, full-height card              |
          |---------------+--------------------------------------------|
          | Hard drive    | Two IDE(AT) Interface drives               |
          | supported:    |                                            |
          |---------------+--------------------------------------------|
          | Floppy drives | Two 360KB, 720KB, 1.2MB, or 1.44MB drives  |
          | supported:    | (NCL 537 only)                             |
          +------------------------------------------------------------+
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |                    Function                     | Location |
          |-------------------------------------------------+----------|
          | 34-pin control cable connector - floppy drive   |   CN1    |
          | (NCL 537 only)                                  |          |
          |-------------------------------------------------+----------|
          | 40-pin IDE(AT) Interface connector              |   CN2    |
          |-------------------------------------------------+----------|
          | 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                       |          |   closed   |
          |---+--------------------------------+----------+------------|
          |   | Floppy drive port address is   |   JP1    | Pins 2 & 3 |
          |   | 372-377h                       |          |   closed   |
          |---+--------------------------------+----------+------------|
          | » | Floppy drive interrupt is IRQ6 |   JP3    | Pins 1 & 2 |
          |   |                                |          |   closed   |
          |---+--------------------------------+----------+------------|
          |   | Floppy drive interrupt is      |   JP3    | Pins 2 & 3 |
          |   | IRQ10                          |          |   closed   |
          |---+--------------------------------+----------+------------|
          | » | DMA Acknowledge channel is     |   JP4    | Pins 1 & 2 |
          |   | DACK2                          |          |   closed   |
          |---+--------------------------------+----------+------------|
          |   | DMA Acknowledge channel is     |   JP4    | Pins 2 & 3 |
          |   | DACK3                          |          |   closed   |
          |---+--------------------------------+----------+------------|
          | » | IRQ Buffer mode disabled       |   JP5    | Pins 1 & 2 |
          |   |                                |          |   closed   |
          |---+--------------------------------+----------+------------|
          |   | IRQ Buffer mode enabled        |   JP5    | Pins 2 & 3 |
          |   |                                |          |   closed   |
          |---+--------------------------------+----------+------------|
          | » | DMA Request channel is DRQ2    |   JP6    | Pins 1 & 2 |
          |   |                                |          |   closed   |
          |---+--------------------------------+----------+------------|
          |   | DMA Request channel is DRQ3    |   JP6    | Pins 2 & 3 |
          |   |                                |          |   closed   |
          |---+--------------------------------+----------+------------|
          | » | Hard Drive interrrupt is IRQ14 |   JP7    | Pins 1 & 2 |
          |   |                                |          |   closed   |
          |---+--------------------------------+----------+------------|
          |   | Hard Drive interrrupt is IRQ15 |   JP7    | Pins 2 & 3 |
          |   |                                |          |   closed   |
          |---+--------------------------------+----------+------------|
          | » | I/O Channel Ready disabled     |   JP8    |    open    |
          |---+--------------------------------+----------+------------|
          |   | I/O Channel Ready enabled      |   JP8    |   closed   |
          |---+--------------------------------+----------+------------|
          | » | Hard drive port address is     |   JP10   |    open    |
          |   | 1F0-1F7h                       |          |            |
          |---+--------------------------------+----------+------------|
          |   | Hard drive port address is     |   JP10   |   closed   |
          |   | 170-177h                       |          |            |
          |---+--------------------------------+----------+------------|
          | » | Normal operation mode enabled  |    E1    |    open    |
          |---+--------------------------------+----------+------------|
          |   | Diagnostic mode enabled        |    E1    |   closed   |
          +------------------------------------------------------------+