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