DATA TECHNOLOGY CORPORATION

DTC3274VL (900176-89XX)

  Data bus:                32-bit VL-Bus

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

  Hard drive supported:    Up to seven SCSI devices

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

[Image]

                        CONNECTIONS

                Function                      Location

  34-pin cable connector - floppy drive         JP5

  50-pin SCSI connector - internal              JP7

  50-pin SCSI connector - external              JP8

  4-pin connector - drive active LED            JP10

                             SCSI ID SELECTION

      SCSI ID              SW11              SW12              SW13

  »         7              off               off                off

            0               on                on                on

            1              off                on                on

            2               on               off                on

            3              off               off                on

            4               on                on                off

            5              off                on                off

            6               on               off                off

                        USER CONFIGURABLE SETTINGS

              Function                    Location           Setting

  »   BIOS support 2 hard drives            JP1                open

      BIOS support 3 or more hard           JP1               closed
      drives

  »   Factory configured - do not           JP2                open
      alter

  »   BIOS enabled                          JP3               closed

      BIOS disabled                         JP3                open

  »   Factory configured - do not           JP4                open
      alter

  »   Factory configured - do not      JP6/pins 1 & 2          N/A
      alter

  »   Active termination enabled            JP9                open

      Active termination disabled           JP9               closed

  »   Factory configured - do not     JP11/pins 2 & 3          N/A
      alter

  »   Factory configured - do not           JP12               open
      alter

  »   Factory configured - do not           JP13               open
      alter

  »   Factory configured - do not           JP14               open
      alter

  »   Factory configured - do not           JP15               open
      alter

  »   CPU clock <=33MHz                     SW1                off

      CPU clock >33MHz                      SW1                 on

  »   Factory configured - do not           SW8                N/A
      alter

  »   Synchronous Negotiation               SW14                on
      disabled

      Synchronous Negotiation               SW14               off
      enabled

  »   Fast synchronous transfer             SW15                on
      disabled

      Fast synchronous transfer             SW15               off
      enabled

  »   Floppy disk controller                SW16               off
      enabled

      Floppy disk controller                SW16                on
      disabled

  »   SCSI parity enabled                   SW17               off

      SCSI parity disabled                  SW17                on

  »   Factory configured - do not           SW18               N/A
      alter

                        BASE I/O ADDRESS SELECTION

           Address                    SW2                    SW3

  »           330h                    off                    off

              130h                     on                     on

              230h                     on                    off

              334h                    off                     on

                          BIOS ADDRESS SELECTION

             Address                     SW4                  SW5

  »          C800-CBFFh                  off                  off

             CC00-CCFFh                  off                   on

             D800-DBFFh                   on                  off

             DC00-DFFFh                   on                   on

                            INTERRUPT SELECTION

            IRQ                      SW6                     SW7

  »            11                     on                     off

               10                     on                     on

               12                    off                     on

               15                    off                     off

                    MISCELLANOUS TECHNICAL NOTES

  DTC 3274VL can support floptical drives through an ASPI utility.