UNIDENTIFIED

HDD/FDD CONTROLLER

Data Bus                16-bit ISA
Card Size               Full height, half length
Hard Drives Supported   Two ST506/412-MFM devices
Floppy Drives Supported Two 360KB, 720KB, 1.2MB, or 1.44MB drives

[Image]

                                CONNECTIONS

         Function           Label            Function             Label

  20-pin cable connector      J1       34-pin cable connector      J4
  - primary drive                      - floppy drive

  20-pin data cable           J2       2-pin connector -           LED
  connector - secondary                drive active LED
  drive

  34-pin cable connector      J3
  - hard drive control

                        USER CONFIGURABLE SETTINGS

                   Setting                      Label        Position

  »   Hard drive controller address set to       J5          Pins 1 & 3
      1F0h                                                    closed

      Hard drive controller address set to       J5          Pins 3 & 5
      170h                                                    closed

  »   Floppy controller address set to 3F2h      J5          Pins 2 & 4
                                                              closed

      Floppy controller address set to 372h      J5          Pins 4 & 6
                                                              closed

  »   Floppy drive speed set to 360RPM           J6            Open

      Floppy drive speed set to 300RPM           J6           Closed