BUSLOGIC, INC.

BT-445S

 Data bus:                32-bit, VL-bus

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

 Hard drive supported:    Up to seven SCSI devices

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

[Image]

                            CONNECTIONS

                   Function                          Location

  4-pin connector-Drive active LED                      J1

  34-pin control cable connector-floppy drive           J2

  50-pin SCSI connector - internal                      J3

  50-pin SCSI connector - external                      J4

                                              SCSI ID

            ID
                                 SW1/switch 1
                                                          SW1/switch 2
                                                                                  SW1/switch 3


               0
                                      off
                                                               off
                                                                                      off


               1
                                      on
                                                               off
                                                                                      off


               2
                                      off
                                                               on
                                                                                      off


               3
                                      on
                                                               on
                                                                                      off


               4
                                      off
                                                               off
                                                                                       on


               5
                                      on
                                                               off
                                                                                       on


               6
                                      off
                                                               on
                                                                                       on

  »
               7
                                      on
                                                               on
                                                                                       on

                                    USER CONFIGURABLE SETTINGS

                        Function                                Location              Setting

  »   SCSI parity check enabled                               SW1/switch 4              on

      SCSI parity check disabled                              SW1/switch 4              off

  »   Hard drive capacity > 1GB disabled                      SW1/switch 5              on

      Hard drive capacity > 1GB enabled                       SW1/switch 5              off

  »   SCSI synchronous negotiation disabled                   SW1/switch 6              on

      SCSI synchronous negotiation enabled                    SW1/switch 6              off

  »   SCSI 5MB/sec data transfer rate enabled                 SW1/switch 7              on

      SCSI 10MB/sec data transfer rate enabled                SW1/switch 7              off

  »   Floppy drive port address is 3F0-3F7h                        W14                 open

      Floppy drive port address is 370-377h                        W14                closed

  »   Floppy drive enabled                                      W15 & W16             closed

      Floppy drive disabled                                     W15 & W16              open

                                 VL-BUS CLOCK SPEED CONFIGURATION

        Clock Speed
                                 SW1/switch 8
                                                          SW1/switch 9
                                                                                 SW1/switch 10


             20MHz
                                      on
                                                               on
                                                                                      off


             25MHz
                                      off
                                                               on
                                                                                      off

  »
          33 or 40MHz
                                      on
                                                               on
                                                                                       on


             50MHz
                                      on
                                                               off
                                                                                       on


            50i MHz
                                      off
                                                               on
                                                                                      off


            66i MHz
                                      on
                                                               on
                                                                                       on

                                         I/O PORT ADDRESS

          Address                SW2/switch 1             SW2/switch 2            SW2/switch 3

           130-133h                   on                       off                     on

           134-137h                   on                       off                    off

           230-233h                   off                      on                      on

           234-237h                   off                      on                     off

  »        330-333h                   on                       on                      on

           334-337h                   on                       on                     off

                                           BIOS ADDRESS

              Address
                                             SW2/switch 4
                                                                             SW2/switch 5

  »
                DC000h
                                                  on
                                                                                  on


                C8000h
                                                  off
                                                                                  off


                D8000h
                                                  off
                                                                                  on


               Disabled
                                                  on
                                                                                  off

                                      HOST INTERRUPT REQUEST

            IRQ                  SW2/switch 6             SW2/switch 7            SW2/switch 8

               9                      on                       off                     on

              10                      off                      on                      on

  »           11                      on                       on                      on

              12                      off                      off                     on

              14                      on                       on                     off

              15                      off                      on                     off

                                      HOST INTERRUPT CHANNEL

    Channel
                  Jumper W3
                                 Jumper W4
                                                Jumper W5
                                                               Jumper W6
                                                                              Jumper W7
                                                                                            Jumper
                                                                                             W8


         9
                     open
                                    open
                                                   open
                                                                  open
                                                                                open
                                                                                            closed


         10
                     open
                                    open
                                                   open
                                                                  open
                                                                               closed
                                                                                            open


         11
                     open
                                    open
                                                   open
                                                                 closed
                                                                                open
                                                                                            open

  »
         12
                     open
                                    open
                                                  closed
                                                                  open
                                                                                open
                                                                                            open


         14
                     open
                                   closed
                                                   open
                                                                  open
                                                                                open
                                                                                            open


         15
                    closed
                                    open
                                                   open
                                                                  open
                                                                                open
                                                                                            open

                     MISCELLANEOUS TECHNICAL NOTES

  SW2/switch 9 and SW2/switch 10 are factory configured - do not alter