UNIDENTIFIED

H/FDC ADAPTER

Card Type               Hard drive controller
Hard Drives supported   Two IDE (AT) drives
Floppy drives supported Two 360KB, 720KB, 1.2MB, 1.44MB
Data Bus                16-bit ISA
Card Size               Half-length, full-height


[Image]

                                CONNECTIONS

          Function             Label           Function            Label

  34-pin cable connector -      CN1     2-pin connector - drive     J1
  floppy drive                          active LED

  40-pin IDE(AT) connector      CN2

                        USER CONFIGURABLE SETTINGS

                  Function                      Label        Position

  »   One hard drive in system                   J2            Open

      Two hard drives in system                  J2           Closed

  »   IOCHRDY signal disabled                    J3            Open

      IOCHRDY signal enabled                     J3           Closed

  »   Host system acknowledges Interrupt         J4          Pins 1 & 2
      status register                                         closed

      Host system ignores Interrupt status       J4          Pine 2 & 3
      register                                                closed

  »   300KPS for DP8473 enabled                  J5          Pins 1 & 2
                                                              closed

      250KPS for DP8473 enabled                  J5          Pins 2 & 3
                                                              closed

  »   Proper precompensation value for           J6          Pins 2 & 3
      DP8473 floppy drive enabled                             closed

      Precompensation control for DP8473         J6          Pins 1 & 2
      floppy drive disabled                                   closed

  »   Floppy drive interface enabled             J7            Open

      Floppy drive interface disabled            J7           Closed

  »   IDE(AT) interface enabled                  J8            Open

      IDE(AT) interface disabled                 J8           Closed

  »   IDE primary address enabled                J9          Pins 2 & 3
                                                              closed

      IDE secondary address enabled              J9          Pins 1 & 2
                                                              closed