ADAPTEC, INC.

ACB-2320B

  Data bus:                  16-bit, ISA

  Size:                      Full-length, full-height card

  Hard drives supported:     Two RLL ESDI drives

  Floppy drives supported:   None

[Image]

                           CONNECTIONS

                  Function                        Location

  20-pin data cable connector-drive 0                J1

  20-pin data cable connector-drive 1                J2

  34-pin control cable connector-hard drive          J3

  4-pin connector-drive active LED                   J4

                        USER CONFIGURABLE SETTINGS

              Function                     Location           Setting

  »   Hard drive address 1F0-1F7h        J5/jumper 1           open

      Hard drive address 170-177h        J5/jumper 1          closed

  »   Zero wait state enabled            J5/jumper 3           open

      Zero wait state disabled           J5/jumper 3          closed

  »   Read ahead cache enabled           J5/jumper 5           open

      Read ahead cache disabled          J5/jumper 5          closed

  »   Hard Drive Interrupt is IRQ14          J12             pins 1 & 2
                                                              closed

      Hard Drive Interrupt is IRQ15          J12             pins 2 & 3
                                                              closed

      Not used                               J12             pins 3 & 4
                                                               open

  »   BIOS address C800h                     J13             pins 1 & 2
                                                              closed

      BIOS address CC00h                     J13             pins 2 & 3
                                                              closed

      BIOS disabled                          J13               open

      MISCELLANEOUS TECHNICAL NOTES

  J5/jumpers 2, 4, 6 & 7 are Not used.