UNIDENTIFIED
============

   S 286 SYSTEM BOARD

   Processor              80286                                   
   Processor Speed        6/10/12/16MHz                           
   Chip Set               VLSI                                    
   Video Chip Set         None                                    
   Maximum Onboard Memory 4MB                                     
   Maximum Video Memory   None                                    
   Cache                  None                                    
   BIOS                   Award/Phoenix                           
   Dimensions             330mm x 218mm                           
   I/O Options            None                                    
   NPU Options            80287                                   

<gopher://bitreich.org/I/th99/m/U-Z/33788-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose             | Location | Purpose        | Location |
   |---------------------+----------+----------------+----------|
   | Speaker             |   J19    | Turbo switch   |   JP4    |
   |---------------------+----------+----------------+----------|
   | Power LED & keylock |   J20    | Turbo LED      |   JP5    |
   |---------------------+----------+----------------+----------|
   | External battery    |   J21    | Reset switch   |   JP6    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function               | Label |   Position   |
   |-------------------------------------+-------+--------------|
   |>> | Factory configured - do not     | DSP/2 |      On      |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |   | EMS port address select 0E8H -  | DSP/4 |      On      |
   |   | 0EFH                            |       |              |
   |---+---------------------------------+-------+--------------|
   |   | EMS port address select 098H -  | DSP/4 |     Off      |
   |   | 09FH                            |       |              |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     |  JP2  | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |   | BIOS type select Phoenix        |  JP7  |  Pins 1 & 2  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | BIOS type select Award          |  JP7  |  Pins 2 & 3  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | EMS type select extended mode   |  JP8  |     Open     |
   |---+---------------------------------+-------+--------------|
   |   | EMS type select expanded mode   |  JP8  |    Closed    |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     | JP10  | Unidentified |
   |   | alter                           |       |              |
   |---+---------------------------------+-------+--------------|
   |   | Wait state select 1 wait state  | JP11  |  Pins 1 & 2  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | Wait state select 0 wait states | JP11  |  Pins 2 & 3  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | Monitor type select monochrome  |  SW1  |  Pins 1 & 2  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | Monitor type select color       |  SW1  |  Pins 2 & 3  |
   |   |                                 |       |    closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |      512KB       |     (18) 41256     |        None        |
   |------------------+--------------------+--------------------|
   |      640KB       |     (18) 41256     |     (18) 4164      |
   |------------------+--------------------+--------------------|
   |       1MB        |     (18) 41256     |     (18) 41256     |
   |------------------+--------------------+--------------------|
   |    1MB (EMS)     |     (18) 41256     |     (18) 41256     |
   |------------------+--------------------+--------------------|
   |       2MB        |    (18) 411000     |        None        |
   |------------------+--------------------+--------------------|
   |    2MB (EMS)     |    (18) 411000     |        None        |
   |------------------+--------------------+--------------------|
   |       4MB        |    (18) 411000     |    (18) 411000     |
   |------------------+--------------------+--------------------|
   |    4MB (EMS)     |    (18) 411000     |    (18) 411000     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM SWITCH CONFIGURATION                  |
   |------------------------------------------------------------|
   |     Size      |    DSP/6     |    DSP/7     |    DSP/8     |
   |---------------+--------------+--------------+--------------|
   |     512KB     |      On      |      On      |      On      |
   |---------------+--------------+--------------+--------------|
   |     640KB     |      On      |      On      |     Off      |
   |---------------+--------------+--------------+--------------|
   |      1MB      |      On      |     Off      |      On      |
   |---------------+--------------+--------------+--------------|
   |   1MB (EMS)   |      On      |     Off      |     Off      |
   |---------------+--------------+--------------+--------------|
   |      2MB      |     Off      |      On      |      On      |
   |---------------+--------------+--------------+--------------|
   |   2MB (EMS)   |     Off      |      On      |     Off      |
   |---------------+--------------+--------------+--------------|
   |      4MB      |     Off      |     Off      |      On      |
   |---------------+--------------+--------------+--------------|
   |   4MB (EMS)   |     Off      |     Off      |     Off      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DRAM JUMPER CONFIGURATION                  |
   |------------------------------------------------------------|
   |            Size            |              J18              |
   |----------------------------+-------------------------------|
   |           256KB            |       Pins 1 & 2 closed       |
   |----------------------------+-------------------------------|
   |           512KB            |       Pins 2 & 3 closed       |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   CLOCK SPEED SELECTION                    |
   |------------------------------------------------------------|
   |        Speed        |      DSP/1      |        JP1         |
   |---------------------+-----------------+--------------------|
   |         Low         |       On        | Pins 2 & 3 closed  |
   |---------------------+-----------------+--------------------|
   |        High         |       Off       | Pins 2 & 3 closed  |
   |---------------------+-----------------+--------------------|
   | Keyboard controlled |       N/A       | Pins 1 & 2 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                       BIOS SELECTION                       |
   |------------------------------------------------------------|
   |       Size        |        JP9         |       DSP/5       |
   |-------------------+--------------------+-------------------|
   |       27128       | Pins 1 & 2 closed  |        On         |
   |-------------------+--------------------+-------------------|
   |       27256       | Pins 2 & 3 closed  |        Off        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  I/O WAIT STATE SELECTION                  |
   |------------------------------------------------------------|
   |     Wait states     |      DSP/3      |        JP3         |
   |---------------------+-----------------+--------------------|
   |          4          |       On        | Pins 2 & 3 closed  |
   |---------------------+-----------------+--------------------|
   |          6          |       Off       | Pins 2 & 3 closed  |
   |---------------------+-----------------+--------------------|
   | Keyboard controlled |       N/A       | Pins 1 & 2 closed  |
   +------------------------------------------------------------+