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

    » í 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.