AMERICAN MEGATRENDS, INC.
=========================

   286 MOTHERBOARD

   Processor              80286                                   
   Processor Speed        8/10/12MHz                              
   Chip Set               Unidentified                            
   Video Chip Set         None                                    
   Maximum Onboard Memory 1MB                                     
   Maximum Video Memory   None                                    
   Cache                  None                                    
   BIOS                   AMI                                     
   Dimensions             330mm x 218mm                           
   I/O Options            None                                    
   NPU Options            80287                                   

<gopher://bitreich.org/I/th99/m/A-B/33640-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose             | Location | Purpose      |  Location  |
   |---------------------+----------+--------------+------------|
   | Speaker             |   J24    | Reset switch | J29 pins 1 |
   |                     |          |              |    & 2     |
   |---------------------+----------+--------------+------------|
   | Power LED & keylock |   J26    | Turbo LED    | J29 pins 3 |
   |                     |          |              |    & 4     |
   |---------------------+----------+--------------+------------|
   | Reset switch        |   J28    |              |            |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function               | Label |   Position   |
   |-------------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  J15  | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |   | ROM wait state select 2 wait    |  J17  |    Closed    |
   |   | states                          |       |              |
   |---+---------------------------------+-------+--------------|
   |   | ROM wait state select 1 wait    |  J17  |     Open     |
   |   | state                           |       |              |
   |---+---------------------------------+-------+--------------|
   |   | Monitor type select color       |  J23  |    Closed    |
   |---+---------------------------------+-------+--------------|
   |   | Monitor type select monochrome  |  J23  |     Open     |
   |---+---------------------------------+-------+--------------|
   |   | I/O wait state enabled          |  J27  |    Closed    |
   |---+---------------------------------+-------+--------------|
   |   | I/O wait state disabled         |  J27  |     Open     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |      512KB       |     (18) 41256     |        None        |
   |------------------+--------------------+--------------------|
   |      640KB       |     (18) 41256     |     (18) 4164      |
   |------------------+--------------------+--------------------|
   |       1MB        |     (18) 41256     |     (18) 41256     |
   |------------------------------------------------------------|
   | Note: The location of banks 0 & 1 are unidentified.        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM JUMPER CONFIGURATION                  |
   |------------------------------------------------------------|
   |       Size        |        J21         |        J22        |
   |-------------------+--------------------+-------------------|
   |       512KB       |       Closed       |      Closed       |
   |-------------------+--------------------+-------------------|
   |       640KB       |        Open        |      Closed       |
   |-------------------+--------------------+-------------------|
   |        1MB        |       Closed       |       Open        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  RAM WAIT STATE SELECTION                  |
   |------------------------------------------------------------|
   |     Wait state     |        J16        |        J18        |
   |--------------------+-------------------+-------------------|
   |         0          |       Open        |      Closed       |
   |--------------------+-------------------+-------------------|
   |         1          |      Closed       |       Open        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                       BIOS SELECTION                       |
   |------------------------------------------------------------|
   |       Type       |        J30         |        J31         |
   |------------------+--------------------+--------------------|
   |      27128       | Pins 1 & 2 closed  | Pins 1 & 2 closed  |
   |------------------+--------------------+--------------------|
   |      27256       |        Open        | Pins 1 & 2 closed  |
   |------------------+--------------------+--------------------|
   |      27512       | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
   +------------------------------------------------------------+