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       # ADAPTEC, INC.
       
          ACB-2322B
       
          Data bus:                16-bit, ISA                           
          Size:                    Full-length, full-height card         
          Hard drives supported:   2 RLL ESDI drives                     
          Floppy drives supported: Two 360KB, 720KB, 1.2MB, or 1.44MB    
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |                  Function                   |   Location   |
          |---------------------------------------------+--------------|
          | 34-pin control cable connector-floppy drive |      J1      |
          |---------------------------------------------+--------------|
          | 20-pin data cable connector-drive 1         |      J3      |
          |---------------------------------------------+--------------|
          | 20-pin data cable connector-drive 0         |      J4      |
          |---------------------------------------------+--------------|
          | 34-pin data cable connector-hard drive      |      J5      |
          |---------------------------------------------+--------------|
          | 4-pin connector-drive active LED            |      J6      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |            Function             |  Location   |  Setting   |
          |---------------------------------+-------------+------------|
          | » | Hard drive address 1F0-1F7h | J2/jumper 1 |    open    |
          |---+-----------------------------+-------------+------------|
          |   | Hard drive address 170-177h | J2/jumper 1 |   closed   |
          |---+-----------------------------+-------------+------------|
          | » | Floppy drive address        | J2/jumper 2 |    open    |
          |   | 3F0-3F7h                    |             |            |
          |---+-----------------------------+-------------+------------|
          |   | Floppy drive address        | J2/jumper 2 |   closed   |
          |   | 370-377h                    |             |            |
          |---+-----------------------------+-------------+------------|
          | » | Zero wait state enabled     | J2/jumper 3 |    open    |
          |---+-----------------------------+-------------+------------|
          |   | Zero wait state disabled    | J2/jumper 3 |   closed   |
          |---+-----------------------------+-------------+------------|
          | » | Read ahead cache enabled    | J2/jumper 5 |    open    |
          |---+-----------------------------+-------------+------------|
          |   | Read ahead cache disabled   | J2/jumper 5 |   closed   |
          |---+-----------------------------+-------------+------------|
          | » | BIOS address C800h          |     J7      | pins 1 & 2 |
          |   |                             |             |   closed   |
          |---+-----------------------------+-------------+------------|
          |   | BIOS address CC00h          |     J7      | pins 2 & 3 |
          |   |                             |             |   closed   |
          |---+-----------------------------+-------------+------------|
          | » | Hard drive Interrupt is     |     J13     | pins 1 & 2 |
          |   | IRQ14                       |             |   closed   |
          |---+-----------------------------+-------------+------------|
          |   | Hard drive Interrupt is     |     J13     | pins 2 & 3 |
          |   | IRQ15                       |             |   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            |     J21     | pins 1 & 2 |
          |   | Acknowledge Is DACK2        |             |   closed   |
          |---+-----------------------------+-------------+------------|
          |   | Floppy drive DMA            |     J21     | pins 2 & 3 |
          |   | Acknowledge is DACK3        |             |   closed   |
          |---+-----------------------------+-------------+------------|
          | » | Floppy drive Interrupt is   |     J22     | pins 1 & 2 |
          |   | IRQ6                        |             |   closed   |
          |---+-----------------------------+-------------+------------|
          |   | Floppy drive Interrupt is   |     J22     | pins 2 & 3 |
          |   | IRQ10                       |             |   closed   |
          |---+-----------------------------+-------------+------------|
          |   | 8K Buffer size              |    J23/     | pins 1 & 2 |
          |   |                             |             |   closed   |
          |   |                             |  J23/TP15   |            |
          |   |                             |             |   closed   |
          |---+-----------------------------+-------------+------------|
          |   | 16K Buffer size             |     J23     | pins 1 & 2 |
          |   |                             |             |   closed   |
          |   |                             |  J23/TP15   |            |
          |   |                             |             |   closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               MISCELLANEOUS TECHNICAL NOTES                |
          |------------------------------------------------------------|
          |              J2/jumper 4, 6 & 7 are Not used.              |
          +------------------------------------------------------------+