AUVA COMPUTER, INC.

HFDC

  Data bus:                  16-bit ISA

  Size:                      Three-quarter length, full-height card

  Hard drive supported:      Two MFM ST-506/412 drives

  Floppy drives supported:   Two 360KB, 720KB, 1.2MB, or 1.44MB drives

[Image]

                              CONNECTIONS

                    Function                           Location

  20-pin data cable connector - drive 1                   J1

  20-pin data cable connector - drive 0                   J2

  34-pin control cable connector - hard drive             J3

  34-pin control cable connector - floppy drive           J4

  4-pin connector - drive active LED                      JP1

                        USER CONFIGURABLE SETTINGS

                Function                     Location         Setting

  »   Floppy drive primary address is           J5           pins 2 & 3
      3F2h                                                     closed

      Floppy drive secondary address            J5           pins 1 & 2
      is 372h                                                  closed

  »   Hard drive primary address is             J6           pins 2 & 3
      1F0h                                                     closed

      Hard drive secondary address is           J6           pins 1 & 2
      170h                                                     closed

  »   Floppy drive dual speed disabled         JP2              open

      Floppy drive dual speed enabled          JP2             closed

  »   Floppy precompensate is ±                JP3              open

      Floppy precompensate is 187ns            JP3             closed