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

   OPTI-P9

   Processor         80386SX                                      
   Processor Speed   16/20MHz                                     
   Chip Set          OPTI                                         
   Max. Onboard DRAM 16MB                                         
   Cache             None                                         
   BIOS              AMI                                          
   Dimensions        220mm x 220mm                                
   I/O Options       None                                         
   NPU Options       80387SX                                      

<gopher://bitreich.org/I/th99/m/U-Z/31540-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose        | Location | Purpose             | Location |
   |----------------+----------+---------------------+----------|
   | Turbo switch   |    J1    | Speaker             |    J4    |
   |----------------+----------+---------------------+----------|
   | Turbo LED      |    J2    | Power LED & keylock |    J5    |
   |----------------+----------+---------------------+----------|
   | Reset switch   |    J3    | External battery    |   JP2    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function               | Jumper |  Position  |
   |--------------------------------------+--------+------------|
   |>> | Turbo mode enabled               |   J1   |    Open    |
   |---+----------------------------------+--------+------------|
   |   | Normal mode enabled CLK2/6 OR    |   J1   |   Closed   |
   |   | CLK2/4                           |        |            |
   |---+----------------------------------+--------+------------|
   |>> | Monitor type select monochrome   |  JP1   |    Open    |
   |---+----------------------------------+--------+------------|
   |   | Monitor type select color        |  JP1   |   Closed   |
   |---+----------------------------------+--------+------------|
   |>> | CMOS memory normal operation     |  JP2   | pins 2 & 3 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |   | CMOS memory clear                |  JP2   | pins 3 & 4 |
   |   |                                  |        |   closed   |
   |---+----------------------------------+--------+------------|
   |>> | NPU asynchronous with CPU        |  JP3   |   Closed   |
   |---+----------------------------------+--------+------------|
   |   | NPU synchronous with CPU         |  JP3   |    Open    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size |   Bank 0    |   Bank 1    |   Bank 2   |   Bank 3   |
   |------+-------------+-------------+------------+------------|
   | 1MB  | (2) 256K x  | (2) 256K x  |    NONE    |    NONE    |
   |      |      9      |      9      |            |            |
   |------+-------------+-------------+------------+------------|
   | 2MB  | (2) 256K x  | (2) 256K x  | (2) 256K x | (2) 256K x |
   |      |      9      |      9      |     9      |     9      |
   |------+-------------+-------------+------------+------------|
   | 2MB  | (2) 1M x 9  |    NONE     |    NONE    |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 3MB  | (2) 256K x  | (2) 256K x  | (2) 1M x 9 |    NONE    |
   |      |      9      |      9      |            |            |
   |------+-------------+-------------+------------+------------|
   | 4MB  | (2) 1M x 9  | (2) 1M x 9  |    NONE    |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 6MB  | (2) 1M x 9  | (2) 1M x 9  | (2) 1M x 9 |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 9MB  | (2) 256K x  | (2) 256K x  | (2) 4M x 9 |    NONE    |
   |      |      9      |      9      |            |            |
   |------+-------------+-------------+------------+------------|
   | 10MB | (2) 1M x 9  | (2) 4M x 9  |    NONE    |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 12MB | (2) 1M x 9  | (2) 1M x 9  | (2) 4M x 9 |    NONE    |
   |------+-------------+-------------+------------+------------|
   | 16MB | (2) 4M x 9  | (2) 4M x 9  |    NONE    |    NONE    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DRAM CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size |Bank 0|Parity 0|Bank 1|Parity|Bank|Parity|Bank|Parity|
   |      |      |        |      |  1   | 2  |  2   | 3  |  3   |
   |------+------+--------+------+------+----+------+----+------|
   |256KB |      |        |      |      |    |      |    |      |
   |------+------+--------+------+------+----+------+----+------|
   |256KB |      |        |      |      |    |      |    |      |
   |------+------+--------+------+------+----+------+----+------|
   |512KB |      |        |      |      |    |      |    |      |
   |------+------+--------+------+------+----+------+----+------|
   |512KB |      |        |      |      |    |      |    |      |
   |------+------+--------+------+------+----+------+----+------|
   |576KB |      |        |      |      |    |      |    |      |
   |------+------+--------+------+------+----+------+----+------|
   |576KB |      |        |      |      |    |      |    |      |
   |------+------+--------+------+------+----+------+----+------|
   |640KB |      |        |      |      |    |      |    |      |
   |------+------+--------+------+------+----+------+----+------|
   |640KB |      |        |      |      |    |      |    |      |
   |------------------------------------------------------------|
   |Note:When using 44256 or 4464 chips, insert the chips into  |
   |the dual-size sockets.                                      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   | Size  | Max Cachable |   Bank 0   |   Bank 1   |    TAG    |
   |-------+--------------+------------+------------+-----------|
   | 64KB  |     8MB      | (4) 8K x 8 | (4) 8K x 8 | (2) 16K x |
   |       |              |            |            |     4     |
   |-------+--------------+------------+------------+-----------|
   | 128KB |     16MB     | (4) 32K x  |    NONE    | (2) 16K x |
   |       |              |     8      |            |     4     |
   |-------+--------------+------------+------------+-----------|
   | 256KB |     32MB     | (4) 32K x  | (4) 32K x  | (2) 16K x |
   |       |              |     8      |     8      |     4     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   | Size  |     W3      |     W4     |     W5     |     W6     |
   |-------+-------------+------------+------------+------------|
   | 64KB  | pins 1 & 2  | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
   |       |   closed    |   closed   |   closed   |   closed   |
   |-------+-------------+------------+------------+------------|
   | 128KB | pins 2 & 3  | pins 2 & 3 | pins 1 & 2 | pins 1 & 2 |
   |       |   closed    |   closed   |   closed   |   closed   |
   |-------+-------------+------------+------------+------------|
   | 256KB | pins 2 & 3  | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 |
   |       |   closed    |   closed   |   closed   |   closed   |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |        VESA CPU TYPE (ID0 &AMP; ID1) CONFIGURATION         |
   |------------------------------------------------------------|
   |     CPU Type     |     JP1 (ID0)      |     JP2 (ID1)      |
   |------------------+--------------------+--------------------|
   |      80386       | pins 2 & 3 closed  | pins 1 & 2 closed  |
   |------------------+--------------------+--------------------|
   |      80486       | pins 1 & 2 closed  | pins 2 & 3 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |  VESA WAIT STATE/BUS SPEED (ID2 &AMP; ID3) CONFIGURATION   |
   |------------------------------------------------------------|
   | CPU speed  |  Wait states   |   JP4 (ID3)    |  JP5 (ID2)  |
   |------------+----------------+----------------+-------------|
   |  < 33MHz   | 0 wait states  |   pins 1 & 2   | pins 1 & 2  |
   |            |                |     closed     |   closed    |
   |------------+----------------+----------------+-------------|
   |  > 33MHz   |  1 wait state  |   pins 2 & 3   | pins 2 & 3  |
   |            |                |     closed     |   closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   VESA ID4 CONFIGURATION                   |
   |------------------------------------------------------------|
   |            Setting            |         JP6 (ID4)          |
   |-------------------------------+----------------------------|
   |    Reserved for future use    |     pins 2 & 3 closed      |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                MISCELLANEOUS TECHNICAL NOTE                |
   |------------------------------------------------------------|
   |   Note:Pins designated should be in the closed position.   |
   +------------------------------------------------------------+