NCL AMERICA

NDC 5027

Data bus: 8-bit, ISA

Size: Half-length, full-height card

Hard drives supported: Two MFM ST506/412

Floppy drives supported: None

[Image]

                        CONNECTIONS

                  Functions                     Location

  34-pin control cable connector-hard drive       CN1

  20-pin data cable connector-drive 0             CN2

  20-pin data cable connector-drive 1             CN3

                        USER CONFIGURABLE SETTINGS

               Function                    Location           Setting

  »   Factory configured - do not           JP1/all             N/A
      alter

  »   Recalibration speed is fast or          JP4              open
      normal

      Recalibration speed is slow             JP4             closed

  »   Supports up to 8 heads                  JP6            pins 1 & 2
                                                              closed

      Supports up to 16 heads                 JP6            pins 2 & 3
                                                              closed

                BIOS DRIVE TYPE TABLE FOR THE NCL5027 - SW1

  Hd/Cyl    #     1      2       3      4      5      6       7       8

   7/699    1     on     on     on     off    N/A    N/A     N/A     on

   6/612    1     on     on     off    off    N/A    N/A     N/A     off

            2    N/A    N/A     N/A    off     on     on     off     off

   4/640    1     on    off     on     off    N/A    N/A     N/A     off

            2    N/A    N/A     N/A    off     on    off     on      off

   4/612    1     on    off     on     off    N/A    N/A     N/A     off

            2    N/A    N/A     N/A    off     on    off     on      off

   2/612    1    off     on     on     off    N/A    N/A     N/A     off

            2    N/A    N/A     N/A    off    off     on     on      off

   2/306    1    off     on     off    off    N/A    N/A     N/A     off

            2    N/A    N/A     N/A    off    off     on     off     off

   4/320    1    off    off     on     off    N/A    N/A     N/A     off

            2    N/A    N/A     N/A    off    off    off     on      off

   4/306    1    off    off     off    off    N/A    N/A     N/A     off

            2    N/A    N/A     N/A    off    off    off     off     off

   6/640    1     on     on     on     on     N/A    N/A     N/A     off

            2    N/A    N/A     N/A    on      on     on     on      off

   5/733    1     on     on     off    on     N/A    N/A     N/A     off

            2    N/A    N/A     N/A    on      on     on     off     off

   7/733    1     on    off     on     on     N/A    N/A     N/A     on

   5/830    1     on    off     off    on     N/A    N/A     N/A     on

   7/830    1    off     on     on     on     N/A    N/A     N/A     on

  10/830    1    off     on     off    on     N/A    N/A     N/A     on

  15/918    1    off    off     on     on     N/A    N/A     N/A     on

   5/977    1    off    off     off    on     N/A    N/A     N/A     on

  Note:This controller has a built-in, low-level format program. To enter
  the program run the DEBUG utility supplied with DOS and at the prompt
  enter: G=C800:5

  SW1/switch 8 must be "on" before power-up to enable the drive splitting
  feature.