DATA TECHNOLOGY CORPORATION

DTC3250

Data bus: 8-bit, ISA

Size: Half-length, full-height card

Hard drives supported: Up to seven SCSI devices

Floppy drives supported: Three 360KB or 720KB

[Image]

                          CONNECTIONS

                  Function                       Location

  50-pin SCSI connector-internal                    CN1

  50-pin SCSI connector-external                    CN2

  34-pin data cable connector-floppy drive          CN3

                               BIOS ADDRESS

         Address               SW2/switch 5             SW2/switch 6

  »         D800h                  off                      off

            DC00h                   on                      off

            C800h                  off                       on

            CC00h                   on                       on

                        USER CONFIGURABLE SETTINGS

              Function                     Location           Setting

  »   Floppy port address 3F2-3F7h           JP1             pins 1 & 2
                                                               closed

      Floppy port address 372-377h           JP1             pins 2 & 3
                                                               closed

  »   Normal operation                       JP2             pins 2 & 3
                                                               closed

      Factory test enabled                   JP2             pins 1 & 2
                                                               closed

  »   SCSI parity check disabled         SW1/switch 3            on

      SCSI parity check enabled          SW1/switch 3           off

  »   Dual-speed floppy supported        SW2/switch 7            on

      Single-speed floppy supported      SW2/switch 7           off

  »   PS/2-type floppy on Drive          SW2/switch 8            on
      Select 2 not supported

      PS/2-type floppy drive on          SW2/switch 8           off
      Drive Select 2 supported

  »   Floppy drive disabled              SW2/switch 9           off

      Floppy drive enabled               SW2/switch 9            on

  »   Normal operation mode             SW2/switch 10           off

      Factory test enabled              SW2/switch 10            on

                 INTERRUPT REQUEST SWITCHES - SW1 AND SW2

           INTERRUPT       INQUIRY
              "A"       INTERRUPT "B"

      #      SW1/1          SW1/2       SW2/1    SW2/2    SW2/3    SW2/4

      4       on             on          off      off      off       on

      5       off            on          off      off      on       off

      6       on             off         off       on      off      off

  »   7       off            off          on      off      off      off

                               SCSI ADDRESS

    SCSI ID        SW1/switch 4       SW1/switch 5        SW1/switch 6

         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

  »      7             off                 off                 off