BUSLOGIC, INC.

BT-542B

Data bus: 16-bit, ISA

Size: Three-quarter length, full-height card

Hard drives supported: Up to seven SCSI devices

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

[Image]

                           CONNECTIONS

                  Function                        Location

  4-pin connector - drive active LED                 J1

  34-pin connector - floppy drive interface          J2

  50-pin SCSI connector - internal                   J3

  50-pin SCSI connector - external                   J4

                               SCSI ADDRESS

    SCSI ID        SW1/Switch 1       SW1/Switch 2        SW1/Switch 3

  »      7              on                 on                  on

         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

                        USER CONFIGURABLE SETTINGS

                Function                     Location          Setting

  »   SCSI Parity check enabled            SW1/switch 4           on

  »   SCSI Parity check disabled           SW1/switch 4          off

  »   SCSI Auto Sense function enabled     SW1/switch 5           on
      (for Rev. <=F)

  »   SCSI Auto Sense function             SW1/switch 5          off
      disabled (for Rev. <=F)

  »   Disk >1G support disabled (for       SW1/switch 5           on
      Rev. >=G)

  »   Disk >1G support enabled (for        SW1/switch 5          off
      Rev. >=G)

  »   Synchronous transfer initiation      SW1/switch 6           on
      from controller disabled

  »   Synchronous transfer intitiation     SW1/switch 6          off
      from controller enabled

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

  »   Floppy drive port address                 W14             closed
      370-377h

  »   Floppy drive enabled                   W15, W16           closed

  »   Floppy drive disabled                  W15, W16            open

  »   I/O channel ready enabled           W17/pins 1 & 2        closed

  »   I/O channel ready disabled          W17/pins 2 & 3        closed

  »   Factory configured - do not               W18              N/A
      alter

  »   Factory configured - do not               W19              N/A
      alter

                                DMA CHANNEL

            DMA                 SW1/Switch 7            SW1/Switch 8

  »            5                     on                      on

               6                     off                     on

               7                     on                      off

           Disabled                  off                     off

                             I/O PORT ADDRESS

       Address          SW2/Switch 1     SW2/Switch 2      SW2/Switch 3

  »     330h-333h            on               on                on

        130h-133h            on               off               on

        134h-137h            on               off               off

        230h-233h           off               on                on

        234h-237h           off               on                off

        334h-337h            on               on                off

        Reserved            off               off               on

        Reserved            off               off               off

                               BIOS ADDRESS

          Address               SW2/Switch 4            SW2/Switch 5

  »         DC000h                   on                      on

            D8000h                   off                     on

            C8000h                   off                     off

           Disabled                  on                      off

                      INTERRUPT REQUEST CONFIGURATION

       IRQ         SW2/Switch 6   SW2/Switch 7   SW2/Switch 8      W3

  »     IRQ11           on             on             on          open

        IRQ9            on            off             on          open

        IRQ10          off             on             on          open

        IRQ12          off            off             on          open

        IRQ14           on             on            off          open

        IRQ15          off             on            off         closed

      Reserved         off            off            off           N/A

      Reserved          on            off            off           N/A

                INTERRUPT REQUEST CONFIGURATION (CONTINUED)

       IRQ            W4          W5         W6         W7          W8

  »     IRQ11        open        open      closed      open        open

         IRQ9        open        open       open       open       closed

        IRQ10        open        open       open      closed       open

        IRQ12        open       closed      open       open        open

        IRQ14       closed       open       open       open        open

        IRQ15        open        open       open       open        open

       Reserved       N/A        N/A         N/A        N/A        N/A

       Reserved       N/A        N/A         N/A        N/A        N/A

                             BUS TRANSFER RATE

             Rate                      W11                    W13

  »          5.0MB/sec                 open                  open

  »          5.7MB/sec                 open                 closed

  »          6.7MB/sec                closed                 open

  »          8.0MB/sec                closed                closed