CONTROL CONCEPTS, INC.

HB A8

Data bus: 8-bit, ISA

Size: Half-length, full-height card

Hard drives supported: Up to seven SCSI devices

Floppy drives supported: Two 360KB, 720KB, 1.2MB, or 1.44MB (Floppy support
version only)

[Image]

                       MISCELLANEOUS TECHNICAL NOTE

    JP6 is not used and should remain open. S1/switch 7 is not used and
                            should remain off.

                Turning on S1/switch 8 will result in error

CONTROL CONCEPTS USA

HB A8

                                        . . . continued from previous page

                          CONNECTIONS

                  Function                       Location

  4-pin connector-drive active LED                  CN1

  50-pin SCSI connector-internal                    CN2

  34-pin data cable connector-floppy drive          CN3

  25-pinSCSI connector-external                     CN4

                        USER CONFIGURABLE SETTINGS

               Function                     Location          Setting

  »   Floppy drive enabled                    JP1            pins 1 & 2
                                                               closed

      Floppy drive disabled                   JP1            pins 2 & 3
                                                               closed

  »   Floppy drive address 3F0-3F7h           JP2            pins 1 & 2
                                                               closed

      Floppy drive address 370-377h           JP2            pins 2 & 3
                                                               closed

  »   Single spindle speed selected           JP3               open

      Dual spindle speed selected             JP3              closed

      IRQ3 (Interrupt request-N/A in      JP4/jumper 1         closed
      DOS)

      IRQ4 (Interrupt request-N/A in      JP4/jumper 2         closed
      DOS)

  »   IRQ5 (Interrupt request-N/A in      JP4/jumper 3         closed
      DOS)

      IRQ7 (Interrupt request-N/A in      JP4/jumper 4         closed
      DOS)

  »   Precompensation value is 125ns          JP5               open

      Precompensation value is 185ns          JP5              closed

                         BIOS ADDRESS

    Address       S1/switch 1     S1/switch 2    S1/switch 3

  C8000-CBE80h        off             on              on

  E0000-E3E80h        on              off             on

  DC000-DFE80h        off             off             on

  D8000-DBE80h        on              on             off

  D4000-D7E80h        off             on             off

  D0000-D3E80h        on              off            off

  CC000-CFE80h        off             off            off

                               SCSI ADDRESS

   SCSI ID #        S1/switch 4        S1/switch 5         S1/switch 6

  »       7             off                off                 off

          6             on                 off                 off

          5             off                 on                 off

          4             on                  on                 off

          3             off                off                 on

          2             on                 off                 on

          1             off                 on                 on

          0             on                  on                 on