
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

