
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 1.44MB

                    NCL 5276: None

Maximum heads/cyl.: 16 heads and 2048 cylinders

[Image]

                        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

