
NEXSTOR, INC.

NXT-80

  Data bus:                32-bit VL-Bus

  Size:                    Three/quarter-length, full-height card

  Hard drive supported:    Up to seven SCSI-1 & SCSI-2 devices

  Floppy drives            Two 360KB, 720KB, 1.2MB, or 1.44MB
  supported:

[Image]

                        CONNECTIONS

                Function                      Location

  50-pin SCSI-2 connector - external            CN1

  50-pin SCSI connector - internal              CN2

  34-pin cable connector - floppy drive         CN3

  4-pin connector - drive active LED            JP8

                        USER CONFIGURABLE SETTINGS

                Function                      Location         Setting

     Port address 340h select                  JP1              open

      Port address 140h select                  JP1             closed

     Factory configured - do not alter         JP3              N/A

     SCSI parity enabled                   JP5/jumper 6        closed

      SCSI parity disabled                  JP5/jumper 6         open

     Supports hard drive <1GB or >1GB      JP6/jumper 1        closed
      not under MS-DOS

      Supports hard drive >1GB under        JP6/jumper 1         open
      MS-DOS

     SCSI disconnect/reselect enabled      JP6/jumper 3         open

      SCSI disconnect/reselect disabled     JP6/jumper 3        closed

     Synchronous negotiation enabled       JP6/jumper 4         open

      Synchronous negotiation disabled      JP6/jumper 4        closed

     Boot up using INT 19 enabled          JP6/jumper 5         open

      Boot up using INT 19 disabled         JP6/jumper 5        closed

     Floppy drive controller enabled           JP7              open

      Floppy drive controller disabled          JP7             closed

                             BASE I/O ADDRESS

      Address        JP4/jumper 1      JP4/jumper 2      JP4/jumper 3

        D8000h           closed            closed            closed

        C8000h            open             closed            closed

        CC000h           closed             open              open

        D0000h           closed             open             closed

        D4000h           closed            closed             open

       Disabled           open              open              open

                             SCSI ID SELECTION

    SCSI ID        JP5/jumper 1       JP5/jumper 2        JP5/jumper 3

        7             open               open                open

        0            closed             closed              closed

        1             open              closed              closed

        2            closed              open               closed

        3             open               open               closed

        4            closed             closed               open

        5             open              closed               open

        6            closed              open                open

                            INTERRUPT SELECTION

          IRQ                JP5/jumper 4              JP5/Jumprt 5

           11                  closed                     open

            9                  closed                    closed

           10                   open                     closed

           12                   open                      open

                             FLOPTICAL OPTION

         Mode                 JP6/Jumper 1             JP6/Jumper 2

        Support                   open                     open

      No support                 closed                   closed

  Note: This mode is available only under MS-DOS for IOMEGA & Insite
  floptical drives.

                       MISCELLANEOUS TECHNICAL NOTES

    Remove terminators from host adapter only when using both external &
                             internal devices.

