UNIDENTIFIED

HARD DISK/FLOPPY CONTROLLER

(AT COMPATIBLE)

Card Type               Hard drive controller
Hard Drives supported   Two ST-506/412 drives
Floppy drives supported Two 360KB, 720KB, 1.2MB, 1.44MB
Data Bus                16-bit ISA
Card Size               Full length, full-height


[Image]

                                CONNECTIONS

          Function            Label           Function            Label

  34-pin control cable          J1      34-pin cable connector      J4
  connector - hard drive                - floppy drive

  20-pin data cable             J2      37-pin hard drive           J5
  connector - drive 0                   connector - external

  20-pin data cable             J3      4-pin connector -           J6
  connector - drive 1                   drive active LED

                        USER CONFIGURABLE SETTINGS

                Function                   Label           Position

  »   Factory configured - do not alter      W1       Pins 1 & 2 closed

  »   Factory configured - do not alter      W2       Pins 1 & 2 closed

  »   Factory configured - do not alter      W4              Open

  »   Primary address for floppy drive       W5              Open
      is 3F2h, 3F4/3F7h

      Secondary address for floppy           W5             Closed
      drive is 372h, 374/377h

  »   Primary address for hard drive is      W6              Open
      1F0/1F7h

      Secondary address for hard drive       W6             Closed
      is 170/177h

  »   Factory configured - do not alter      W7              Open

            Note:Location of pin 1 is unidentified.