ADAPTEC, INC.
=============

    ACB-2071

   Data bus:                8-bit, ISA                            
   Size:                    Half-length, full-height card         
   Hard drives supported:   One RLL ST506                         
   Floppy drives supported: None                                  

<gopher://bitreich.org/I/th99/c/A-B/20011-1.png>
    

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |                Function                 |     Location     |
   |-----------------------------------------+------------------|
   |  5-pin power connector                  |  J1              |
   |-----------------------------------------+------------------|
   |  20-pin data cable connector            |  J2              |
   |-----------------------------------------+------------------|
   |  32-pin control cable connector         |  J3              |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |            Function             |   Location   |  Setting  |
   |---------------------------------+--------------+-----------|
   |>> |  I/O port address is 320h   |  J5/jumper 7 |  open     |
   |---+-----------------------------+--------------+-----------|
   |   |  I/O port address is 324h   |  J5/jumper 7 |  closed   |
   |---+-----------------------------+--------------+-----------|
   |>> |  BIOS enabled               |  J5/jumper 8 |  closed   |
   |---+-----------------------------+--------------+-----------|
   |   |  BIOS disabled              |  J5/jumper 8 |  open     |
   +------------------------------------------------------------+

 +-----------------------------------------------------------------+
 |                BIOS DRIVE TYPE TABLE FOR DRIVE 0                |
 |-----------------------------------------------------------------|
 |Table|Capacity| Step  |Hds.|Cyl. | JP5/1 | JP5/2 | JP5/3 | JP5/4 |
 |  #  |        | Rate  |    |     |       |       |       |       |
 |-----+--------+-------+----+-----+-------+-------+-------+-------|
 | 0   | 31MB   | 70msec| 4  | 615 | closed| closed| closed| closed|
 |-----+--------+-------+----+-----+-------+-------+-------+-------|
 | 1   | 31MB   | 13msec| 2  | 1023| closed| closed| closed| open  |
 |-----+--------+-------+----+-----+-------+-------+-------+-------|
 | 2   | 90.3MB | 13msec| 7  | 987 | closed| closed| open  | closed|
 |-----+--------+-------+----+-----+-------+-------+-------+-------|
 | 3   | 38MB   | 13msec| 3  | 987 | closed| closed| open  | open  |
 |-----+--------+-------+----+-----+-------+-------+-------+-------|
 | 4   | 65MB   | 13msec| 5  | 987 | closed| open  | closed| closed|
 |-----+--------+-------+----+-----+-------+-------+-------+-------|
 | 5   | 62MB   | 13msec| 5  | 980 | closed| open  | closed| open  |
 |-----+--------+-------+----+-----+-------+-------+-------+-------|
 | 6   | 105MB  | 13msec| 10 | 830 | closed| open  | open  | closed|
 |-----+--------+-------+----+-----+-------+-------+-------+-------|
 | 7   | 31MB   | 13msec| 4  | 615 | closed| open  | open  | open  |
 |-----+--------+-------+----+-----+-------+-------+-------+-------|
 | 8   | 15.6MB | 70msec| 4  | 306 | open  | closed| closed| closed|
 |-----+--------+-------+----+-----+-------+-------+-------+-------|
 | 9   | 15.5MB | 13msec| 2  | 612 | open  | closed| closed| open  |
 |-----+--------+-------+----+-----+-------+-------+-------+-------|
 | 10  | 68MB   | 13msec| 8  | 640 | open  | closed| open  | closed|
 |-----+--------+-------+----+-----+-------+-------+-------+-------|
 | 11  | 15.6MB | 13msec| 4  | 306 | open  | closed| open  | open  |
 |-----+--------+-------+----+-----+-------+-------+-------+-------|
 | 12  | 47MB   | 13msec| 6  | 640 | open  | open  | closed| closed|
 |-----+--------+-------+----+-----+-------+-------+-------+-------|
 | 13  | 31MB   | 13msec| 4  | 640 | open  | open  | closed| open  |
 |-----+--------+-------+----+-----+-------+-------+-------+-------|
 | 14  | 31MB   | 70msec| 4  | 612 | open  | open  | open  | closed|
 |-----+--------+-------+----+-----+-------+-------+-------+-------|
 | 15  | 31MB   | 13msec| 4  | 612 | open  | open  | open  | open  |
 +-----------------------------------------------------------------+

   +------------------------------------------------------------+
   |                        BIOS ADDRESS                        |
   |------------------------------------------------------------|
   |     Address      |    J5/jumper 5     |    J5/jumper 6     |
   |------------------+--------------------+--------------------|
   |>> |    D800h     |        open        |        open        |
   |---+--------------+--------------------+--------------------|
   |   |    DA00h     |        open        |       closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               MISCELLANEOUS TECHNICAL NOTES                |
   |------------------------------------------------------------|
   |                      J4 is Not used.                       |
   +------------------------------------------------------------+