
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.

