ADAPTEC, INC.

ACB-2372B

Data bus:                16-bit, ISA
Size:                    Half-length, full-height card
Hard drives supported:   2 RLL ST506 drives
Floppy drives supported: Two 360KB, 720KB, 1.2MB, or 1.44MB

[Image]

                           CONNECTIONS

                  Function                        Location

  34-pin data cable connector-floppy drive           J1

  20-pin data cable connector-drive 1                J3

  20-pin data cable connector-drive 0                J4

  34-pin control cable connector-hard drive          J5

  3-pin connector-drive active LED                   J6

                        USER CONFIGURABLE SETTINGS

               Function                    Location           Setting

  »   Hard drive address 1F0-1F7h            J2- 1              open

      Hard drive address 170-177h            J2- 1             closed

  »   Floppy drive address 3F0-3F7h          J2- 2              open

      Floppy drive address 370-377h          J2- 2             closed

  »   Zero wait state disabled               J2- 3              open

      Zero wait state enabled                J2- 3             closed

  »   16msec step rate and                   J2- 4              open
      recalibrate to 0

      35msec step rate and                   J2- 4             closed
      recalibrate to 0 minus 1

  »   Read ahead cache enabled               J2- 5              open

      Read ahead cache disabled              J2- 5             closed

  »   Not used                               J2-6               open

  »   Not used                               J2-7               open

  »   BIOS address C800h                      J7             pins 1 & 2
                                                               closed

      BIOS address CC00h                      J7             pins 2 & 3
                                                               closed

      BIOS address disabled             J7/pin 2 to top        closed
                                              pin

  »   Hard drive Interrupt is IRQ14           J13            pins 1 & 2
                                                               closed

      Hard drive Interrupt is IRQ15           J13            pins 2 & 3
                                                               closed

  »   Floppy drive DMA Request is             J20            pins 1 & 2
      DREQ2                                                    closed

      Floppy drive DMA Request is             J20            pins 2 & 3
      DREQ3                                                    closed

  »   Floppy drive DMA Acknowledge            J21            pins 1 & 2
      Is DACK2                                                 closed

      Floppy drive DMA Acknowledge            J21            pins 2 & 3
      is DACK3                                                 closed

  »   Floppy drive Interrupt is IRQ6          J22            pins 1 & 2
                                                               closed

      Floppy drive Interrupt is               J22            pins 2 & 3
      IRQ10                                                    closed