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

   AHA-2840A

   Card Type               Hard drive controller card             
   Hard Drives supported   Up to 7 SCSI devices                   
   Floppy drives supported None                                   
   Data Bus                32-bit VESA Local Bus                  
   Card Size               Full-length, full-height card          

<gopher://bitreich.org/I/th99/c/A-B/21747-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |        Function        | Location |  Function   | Location |
   |------------------------+----------+-------------+----------|
   | 4-pin LED connector    |    J1    | 50-pin SCSI |    J4    |
   |                        |          | connector - |          |
   |                        |          | external    |          |
   |------------------------+----------+-------------+----------|
   | 50-pin SCSI connector  |    J3    |             |          |
   | - internal             |          |             |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |                Function                | Label | Position  |
   |----------------------------------------+-------+-----------|
   |>> | Write-back enabled                 |  J5   |  Closed   |
   |---+------------------------------------+-------+-----------|
   |   | Write-back disabled                |  J5   |   Open    |
   |---+------------------------------------+-------+-----------|
   |>> | Factory configured - do not alter  | S1/5  | Reserved  |
   |---+------------------------------------+-------+-----------|
   |>> | Host adapter BIOS enabled          | S1/8  |    Off    |
   |---+------------------------------------+-------+-----------|
   |   | Host adapter BIOS disabled         | S1/8  |    On     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   I/O ADDRESS SELECTION                    |
   |------------------------------------------------------------|
   |    Address     |   S1/1   |   S1/2   |   S1/3   |   S1/4   |
   |----------------+----------+----------+----------+----------|
   |>> |   1C00h    |   Off    |   Off    |   Off    |   Off    |
   |---+------------+----------+----------+----------+----------|
   |   |   2C00h    |    On    |   Off    |   Off    |   Off    |
   |---+------------+----------+----------+----------+----------|
   |   |   3C00h    |   Off    |    On    |   Off    |   Off    |
   |---+------------+----------+----------+----------+----------|
   |   |   4C00h    |    On    |    On    |   Off    |   Off    |
   |---+------------+----------+----------+----------+----------|
   |   |   5C00h    |   Off    |   Off    |    On    |   Off    |
   |---+------------+----------+----------+----------+----------|
   |   |   6C00h    |    On    |   Off    |    On    |   Off    |
   |---+------------+----------+----------+----------+----------|
   |   |   7C00h    |   Off    |    On    |    On    |   Off    |
   |---+------------+----------+----------+----------+----------|
   |   |   8C00h    |    On    |    On    |    On    |   Off    |
   |---+------------+----------+----------+----------+----------|
   |   |   9C00h    |   Off    |   Off    |   Off    |    On    |
   |---+------------+----------+----------+----------+----------|
   |   |   AC00h    |    On    |   Off    |   Off    |    On    |
   |---+------------+----------+----------+----------+----------|
   |   |   BC00h    |   Off    |    On    |   Off    |    On    |
   |---+------------+----------+----------+----------+----------|
   |   |   CC00h    |    On    |    On    |   Off    |    On    |
   |---+------------+----------+----------+----------+----------|
   |   |   DC00h    |   Off    |   Off    |    On    |    On    |
   |---+------------+----------+----------+----------+----------|
   |   |   EC00h    |    On    |   Off    |    On    |    On    |
   |---+------------+----------+----------+----------+----------|
   |   |   FC00h    |   Off    |    On    |    On    |    On    |
   |---+------------+----------+----------+----------+----------|
   |   |  Reserved  |    On    |    On    |    On    |    On    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   BIOS ADDRESS SELECTION                   |
   |------------------------------------------------------------|
   |        Address         |      S1/6       |      S1/7       |
   |------------------------+-----------------+-----------------|
   |   |       C8000h       |       On        |       Off       |
   |---+--------------------+-----------------+-----------------|
   |   |       D0000h       |       Off       |       On        |
   |---+--------------------+-----------------+-----------------|
   |>> |       D8000h       |       Off       |       Off       |
   |---+--------------------+-----------------+-----------------|
   |   |       E0000h       |       On        |       On        |
   +------------------------------------------------------------+