
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

