DATAEXPERT CORPORATION
======================

   EXP8851

   Device Type      Mainboard                                     
   Processor        CX 6X86/AM K5/Pentium                         
   Processor Speed  75/90/100/120/133/150/166/200MHz              
   Chip Set         Unidentified                                  
   Video Chip Set   None                                          
   Maximum Onboard  128MB                                         
   Memory           
   Maximum Video    None                                          
   Memory           
   Cache            256/512KB                                     
   BIOS             AMI                                           
   Dimensions       290mm x 220mm                                 
   I/O Options      32-bit PCI slots (4), green PC connector, VRM 
                    connector                                     

<gopher://bitreich.org/I/th99/m/C-D/35703-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose           | Location | Purpose          | Location |
   |-------------------+----------+------------------+----------|
   | Serial port 2     |   CN1    | Turbo LED        |    J4    |
   |-------------------+----------+------------------+----------|
   | Serial port 1     |   CN2    | Parallel port    |    J5    |
   |-------------------+----------+------------------+----------|
   | Floppy drive      |   CN3    | Green PC         |   JP19   |
   | interface         |          | connector        |          |
   |-------------------+----------+------------------+----------|
   | IDE interface 2   |   CN4    | IDE interface    |   JP20   |
   |                   |          | LED              |          |
   |-------------------+----------+------------------+----------|
   | IDE interface 1   |   CN5    | CPU fan power    |   JP30   |
   |-------------------+----------+------------------+----------|
   | Power LED &       |    J1    | 32-bit PCI slots |  PC1 -   |
   | keylock           |          |                  |   PC4    |
   |-------------------+----------+------------------+----------|
   | Speaker           |    J2    | VRM connector    |   VRM    |
   |-------------------+----------+------------------+----------|
   | Reset switch      |    J3    |                  |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |               Function                | Label |  Position  |
   |---------------------------------------+-------+------------|
   |>> | Cache type select write back      | JP10  |    Open    |
   |---+-----------------------------------+-------+------------|
   |   | Cache type select write through   | JP10  |   Closed   |
   |---+-----------------------------------+-------+------------|
   |>> | CPU pipeline enabled              | JP11  |   Closed   |
   |---+-----------------------------------+-------+------------|
   |   | CPU pipeline disabled             | JP11  |    Open    |
   |---+-----------------------------------+-------+------------|
   |>> | AT bus CLK select PCICLK/4        | JP15  | Pins 2 & 3 |
   |   |                                   |       |   closed   |
   |---+-----------------------------------+-------+------------|
   |   | AT bus CLK select PCICLK/3        | JP15  | Pins 1 & 2 |
   |   |                                   |       |   closed   |
   |---+-----------------------------------+-------+------------|
   |>> | CMOS memory normal operation      | JP18  |    Open    |
   |---+-----------------------------------+-------+------------|
   |   | CMOS memory clear                 | JP18  |   Closed   |
   |---+-----------------------------------+-------+------------|
   |>> | Parallel port mode select         | JP23  |   Closed   |
   |   | standard                          |       |            |
   |---+-----------------------------------+-------+------------|
   |   | Parallel port mode select EPP     | JP23  |    Open    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     SIMM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       8MB        |    (2) 1M x 36     |        None        |
   |------------------+--------------------+--------------------|
   |       16MB       |    (2) 2M x 36     |        None        |
   |------------------+--------------------+--------------------|
   |       16MB       |    (2) 1M x 36     |    (2) 1M x 36     |
   |------------------+--------------------+--------------------|
   |       24MB       |    (2) 2M x 36     |    (2) 1M x 36     |
   |------------------+--------------------+--------------------|
   |       32MB       |    (2) 4M x 36     |        None        |
   |------------------+--------------------+--------------------|
   |       32MB       |    (2) 2M x 36     |    (2) 2M x 36     |
   |------------------+--------------------+--------------------|
   |       40MB       |    (2) 4M x 36     |    (2) 1M x 36     |
   |------------------+--------------------+--------------------|
   |       48MB       |    (2) 4M x 36     |    (2) 2M x 36     |
   |------------------+--------------------+--------------------|
   |       64MB       |    (2) 8M x 36     |        None        |
   |------------------+--------------------+--------------------|
   |       64MB       |    (2) 4M x 36     |    (2) 4M x 36     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 SIMM CONFIGURATION (CON'T)                 |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       72MB       |    (2) 8M x 36     |    (2) 1M x 36     |
   |------------------+--------------------+--------------------|
   |       80MB       |    (2) 8M x 36     |    (2) 2M x 36     |
   |------------------+--------------------+--------------------|
   |       96MB       |    (2) 8M x 36     |    (2) 4M x 36     |
   |------------------+--------------------+--------------------|
   |      128MB       |    (2) 8M x 36     |    (2) 8M x 36     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   |   Size    |    Bank 0    |   Bank 1    |        TAG        |
   |-----------+--------------+-------------+-------------------|
   | 256KB (A) | (2) 32K x 32 |    None     |       None        |
   |-----------+--------------+-------------+-------------------|
   | 256KB (B) |     None     | (8) 32K x 8 | (1) 8K/16K/32K x  |
   |           |              |             |         8         |
   |-----------+--------------+-------------+-------------------|
   |   512KB   |     None     | (8) 64K x 8 |  (1) 16K/32K x 8  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 CACHE JUMPER CONFIGURATION                 |
   |------------------------------------------------------------|
   |   Size    |      JP12      |     JP13      |     JP14      |
   |-----------+----------------+---------------+---------------|
   | 256KB (B) |   Pins 2 & 3   |  Pins 2 & 3   |  Pins 1 & 2   |
   |           |     closed     |    closed     |    closed     |
   |-----------+----------------+---------------+---------------|
   |   512KB   |   Pins 1 & 2   |  Pins 1 & 2   |  Pins 2 & 3   |
   |           |     closed     |    closed     |    closed     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               CPU SPEED SELECTION (CX 6X86)                |
   |------------------------------------------------------------|
   |CPU speed|Clock speed|Multiplier|  JP5  | JP16  | JP17 |JP31|
   |---------+-----------+----------+-------+-------+------+----|
   | 120MHz  |   50MHz   |    2x    |Closed | Open  | Open |Open|
   |---------+-----------+----------+-------+-------+------+----|
   | 150MHz  |   60MHz   |    2x    |Closed | Open  |Closed|Open|
   |---------+-----------+----------+-------+-------+------+----|
   | 166MHz  |   66MHz   |    2x    |Closed |Closed |Closed|Open|
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                CPU SPEED SELECTION (AM K5)                 |
   |------------------------------------------------------------|
   |  CPU   | Clock  | Multiplier | JP5  | JP16 |  JP17  | JP31 |
   | speed  | speed  |            |      |      |        |      |
   |--------+--------+------------+------+------+--------+------|
   | 75MHz  | 50MHz  |    1.5x    | Open | Open |  Open  | Open |
   |--------+--------+------------+------+------+--------+------|
   | 90MHz  | 60MHz  |    1.5x    | Open | Open | Closed | Open |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                CPU SPEED SELECTION (INTEL)                 |
   |------------------------------------------------------------|
   |CPU speed|Clock speed|Multiplier| JP5  | JP16 | JP17 | JP31 |
   |---------+-----------+----------+------+------+------+------|
   |  75MHz  |   50MHz   |   1.5x   | Open | Open | Open | Open |
   |---------+-----------+----------+------+------+------+------|
   |  90MHz  |   60MHz   |   1.5x   | Open | Open |Closed| Open |
   |---------+-----------+----------+------+------+------+------|
   | 100MHz  |   66MHz   |   1.5x   | Open |Closed|Closed| Open |
   |---------+-----------+----------+------+------+------+------|
   | 120MHz  |   60MHz   |    2x    |Closed| Open |Closed| Open |
   |---------+-----------+----------+------+------+------+------|
   | 133MHz  |   66MHz   |    2x    |Closed|Closed|Closed| Open |
   |---------+-----------+----------+------+------+------+------|
   | 150MHz  |   60MHz   |   2.5x   |Closed| Open |Closed|Closed|
   |---------+-----------+----------+------+------+------+------|
   | 166MHz  |   66MHz   |   2.5x   |Closed|Closed|Closed|Closed|
   |---------+-----------+----------+------+------+------+------|
   | 200MHz  |   66MHz   |    3x    | Open |Closed|Closed|Closed|
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   DMA CHANNEL SELECTION                    |
   |------------------------------------------------------------|
   |     Channel      |        JP27        |        JP28        |
   |------------------+--------------------+--------------------|
   |        1         | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
   |------------------+--------------------+--------------------|
   |        3         | Pins 1 & 2 closed  | Pins 1 & 2 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                       BIOS SELECTION                       |
   |------------------------------------------------------------|
   |     Setting      |        JP8         |        JP9         |
   |------------------+--------------------+--------------------|
   |>> |   5v flash   | Pins 2 & 3 closed  | Pins 1 & 2 closed  |
   |---+--------------+--------------------+--------------------|
   |   |  12v flash   | Pins 2 & 3 closed  | Pins 2 & 3 closed  |
   |---+--------------+--------------------+--------------------|
   |   |    EPROM     | Pins 1 & 2 closed  | Pins 1 & 2 closed  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                       IDE SELECTION                        |
   |------------------------------------------------------------|
   |       Setting        |       JP21       |       JP22       |
   |----------------------+------------------+------------------|
   |>> | Normal operation |    Pins 2 & 3    |    Pins 2 & 3    |
   |   |                  |      closed      |      closed      |
   |---+------------------+------------------+------------------|
   |   | Feature function |    Pins 1 & 2    |    Pins 1 & 2    |
   |   |                  |      closed      |      closed      |
   +------------------------------------------------------------+