(TXT) View Source
       
       # CHAINTECH COMPUTER COMPANY, LTD.
       
          4ULD.1
       
       Processor  80486SX/SL80486SX/UMCU5S/CX486M7/AM486DXL/80486DX/SL80486DX/     
                  AM486DXL2/80486DX2/SL80486DX/80486DX4/P24D/Pentium Overdrive     
       Processor  25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/ 
       Speed      100(internal)MHz                                                 
       Chip Set   UMC                                                              
       Max.       64MB                                                             
       Onboard    
       DRAM       
       Cache      128/256KB                                                        
       BIOS       Award                                                            
       Dimensions 250mm x 220mm                                                    
       I/O        32-bit VESA local bus slots (3), green PC connector              
       Options    
       NPU        None                                                             
       Options    
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose           | Location | Purpose          | Location |
          |-------------------+----------+------------------+----------|
          | Power LED &       |   JP1    | Green PC         |   JP20   |
          | keylock           |          | connector        |          |
          |-------------------+----------+------------------+----------|
          | Green PC          |   JP2    | Reset switch     |   JP21   |
          | connector         |          |                  |          |
          |-------------------+----------+------------------+----------|
          | Green PC          |   JP3    | Speaker          |   JP23   |
          | connector         |          |                  |          |
          |-------------------+----------+------------------+----------|
          | Green PC          |   JP4    | Turbo LED        |   JP26   |
          | connector         |          |                  |          |
          |-------------------+----------+------------------+----------|
          | Green PC          |   JP5    | Green PC LED     |   JP33   |
          | connector         |          |                  |          |
          |-------------------+----------+------------------+----------|
          | External battery  |   JP8    | 32-bit VESA      |  SL1 -   |
          |                   |          | local bus slots  |   SL3    |
          |-------------------+----------+------------------+----------|
          | Turbo switch      |   JP16   |                  |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |             Function             | Jumper |    Position    |
          |----------------------------------+--------+----------------|
          | » | Battery type select internal |  JP8   |   pins 2 & 3   |
          |   |                              |        |     closed     |
          |---+------------------------------+--------+----------------|
          |   | CMOS memory clear            |  JP8   |   pins 3 & 4   |
          |   |                              |        |     closed     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |    Size    |    Bank 0     |    Bank 1     |    Bank 2     |
          |------------+---------------+---------------+---------------|
          |    1MB     | (4) 256K x 9  |     NONE      |     NONE      |
          |------------+---------------+---------------+---------------|
          |    1MB     |     NONE      | (1) 256K x 36 |     NONE      |
          |------------+---------------+---------------+---------------|
          |    2MB     | (4) 256K x 9  | (1) 256K x 36 |     NONE      |
          |------------+---------------+---------------+---------------|
          |    2MB     |     NONE      | (1) 512K x 36 |     NONE      |
          |------------+---------------+---------------+---------------|
          |    2MB     |     NONE      | (1) 256K x 36 | (1) 256K x 36 |
          |------------+---------------+---------------+---------------|
          |    3MB     | (4) 256K x 9  | (1) 512K x 36 |     NONE      |
          |------------+---------------+---------------+---------------|
          |    3MB     |     NONE      | (1) 512K x 36 | (1) 256K x 36 |
          |------------+---------------+---------------+---------------|
          |    3MB     |     NONE      | (1) 256K x 36 | (1) 512K x 36 |
          |------------+---------------+---------------+---------------|
          |    4MB     |  (4) 1M x 9   |     NONE      |     NONE      |
          |------------+---------------+---------------+---------------|
          |    4MB     |     NONE      |  (1) 1M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    4MB     |     NONE      | (1) 512K x 36 | (1) 512K x 36 |
          |------------+---------------+---------------+---------------|
          |    5MB     |  (4) 1M x 9   | (1) 256K x 36 |     NONE      |
          |------------+---------------+---------------+---------------|
          |    5MB     | (4) 256K x 9  |  (1) 1M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    5MB     |     NONE      |  (1) 1M x 36  | (1) 256K x 36 |
          |------------+---------------+---------------+---------------|
          |    5MB     |     NONE      | (1) 256K x 36 |  (1) 1M x 36  |
          |------------+---------------+---------------+---------------|
          |    6MB     |  (4) 1M x 9   | (1) 512K x 36 |     NONE      |
          |------------+---------------+---------------+---------------|
          |    6MB     |     NONE      |  (1) 1M x 36  | (1) 512K x 36 |
          |------------+---------------+---------------+---------------|
          |    6MB     |     NONE      | (1) 512K x 36 |  (1) 1M x 36  |
          |------------+---------------+---------------+---------------|
          |    8MB     |  (4) 1M x 9   |  (1) 1M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    8MB     |     NONE      |  (1) 2M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    8MB     |     NONE      |  (1) 1M x 36  |  (1) 1M x 36  |
          |------------+---------------+---------------+---------------|
          |    9MB     | (4) 256K x 9  |  (1) 2M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    9MB     |     NONE      |  (1) 2M x 36  | (1) 256K x 36 |
          |------------+---------------+---------------+---------------|
          |    9MB     |     NONE      | (1) 256K x 36 |  (1) 2M x 36  |
          |------------+---------------+---------------+---------------|
          |    10MB    |     NONE      |  (1) 2M x 36  | (1) 512K x 36 |
          |------------+---------------+---------------+---------------|
          |    10MB    |     NONE      | (1) 512K x 36 |  (1) 2M x 36  |
          |------------+---------------+---------------+---------------|
          |    12MB    |  (4) 1M x 9   |  (1) 2M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    12MB    |     NONE      |  (1) 2M x 36  |  (1) 1M x 36  |
          |------------+---------------+---------------+---------------|
          |    12MB    |     NONE      |  (1) 1M x 36  |  (1) 2M x 36  |
          |------------+---------------+---------------+---------------|
          |    16MB    |  (4) 4M x 9   |     NONE      |     NONE      |
          |------------+---------------+---------------+---------------|
          |    16MB    |     NONE      |  (1) 4M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    16MB    |     NONE      |  (1) 2M x 36  |  (1) 2M x 36  |
          |------------+---------------+---------------+---------------|
          |    17MB    |  (4) 4M x 9   | (1) 256K x 36 |     NONE      |
          |------------+---------------+---------------+---------------|
          |    17MB    | (4) 256K x 9  |  (1) 4M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    17MB    |     NONE      |  (1) 4M x 36  | (1) 256K x 36 |
          |------------+---------------+---------------+---------------|
          |    17MB    |     NONE      | (1) 256K x 36 |  (1) 4M x 36  |
          |------------+---------------+---------------+---------------|
          |    18MB    |  (4) 4M x 9   | (1) 512K x 36 |     NONE      |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 DRAM CONFIGURATION (CON’T)                 |
          |------------------------------------------------------------|
          |    Size    |    Bank 0     |    Bank 1     |    Bank 2     |
          |------------+---------------+---------------+---------------|
          |    18MB    |     NONE      |  (1) 4M x 36  | (1) 512K x 36 |
          |------------+---------------+---------------+---------------|
          |    18MB    |     NONE      | (1) 512K x 36 |  (1) 4M x 36  |
          |------------+---------------+---------------+---------------|
          |    20MB    |  (4) 4M x 9   |  (1) 1M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    20MB    |  (4) 1M x 9   |  (1) 4M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    20MB    |     NONE      |  (1) 4M x 36  |  (1) 1M x 36  |
          |------------+---------------+---------------+---------------|
          |    20MB    |     NONE      |  (1) 1M x 36  |  (1) 4M x 36  |
          |------------+---------------+---------------+---------------|
          |    24MB    |  (4) 4M x 9   |  (1) 2M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    24MB    |     NONE      |  (1) 4M x 36  |  (1) 2M x 36  |
          |------------+---------------+---------------+---------------|
          |    24MB    |     NONE      |  (1) 2M x 36  |  (1) 4M x 36  |
          |------------+---------------+---------------+---------------|
          |    32MB    |  (4) 8M x 9   |     NONE      |     NONE      |
          |------------+---------------+---------------+---------------|
          |    32MB    |  (4) 4M x 9   |  (1) 4M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    32MB    |     NONE      |  (1) 8M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    32MB    |     NONE      |  (1) 4M x 36  |  (1) 4M x 36  |
          |------------+---------------+---------------+---------------|
          |    33MB    |  (4) 8M x 9   | (1) 256K x 36 |     NONE      |
          |------------+---------------+---------------+---------------|
          |    33MB    | (4) 256K x 9  |  (1) 8M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    33MB    |     NONE      |  (1) 8M x 36  | (1) 256K x 36 |
          |------------+---------------+---------------+---------------|
          |    33MB    |     NONE      | (1) 256K x 36 |  (1) 8M x 36  |
          |------------+---------------+---------------+---------------|
          |    34MB    |  (4) 8M x 9   | (1) 512K x 36 |     NONE      |
          |------------+---------------+---------------+---------------|
          |    34MB    |     NONE      |  (1) 8M x 36  | (1) 512K x 36 |
          |------------+---------------+---------------+---------------|
          |    34MB    |     NONE      | (1) 512K x 36 |  (1) 8M x 36  |
          |------------+---------------+---------------+---------------|
          |    36MB    |  (4) 8M x 9   |  (1) 1M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    36MB    |  (4) 1M x 9   |  (1) 8M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    36MB    |     NONE      |  (1) 8M x 36  |  (1) 1M x 36  |
          |------------+---------------+---------------+---------------|
          |    36MB    |     NONE      |  (1) 1M x 36  |  (1) 8M x 36  |
          |------------+---------------+---------------+---------------|
          |    40MB    |  (4) 8M x 9   |  (1) 2M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    40MB    |     NONE      |  (1) 8M x 36  |  (1) 2M x 36  |
          |------------+---------------+---------------+---------------|
          |    40MB    |     NONE      |  (1) 2M x 36  |  (1) 8M x 36  |
          |------------+---------------+---------------+---------------|
          |    48MB    |  (4) 8M x 9   |  (1) 4M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    48MB    |  (4) 4M x 9   |  (1) 8M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    48MB    |     NONE      |  (1) 8M x 36  |  (1) 4M x 36  |
          |------------+---------------+---------------+---------------|
          |    48MB    |     NONE      |  (1) 4M x 36  |  (1) 8M x 36  |
          |------------+---------------+---------------+---------------|
          |    64MB    |  (4) 16M x 9  |     NONE      |     NONE      |
          |------------+---------------+---------------+---------------|
          |    64MB    |  (4) 8M x 9   |  (1) 8M x 36  |     NONE      |
          |------------+---------------+---------------+---------------|
          |    64MB    |     NONE      |  (1) 8M x 36  |  (1) 8M x 36  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |   Size    |   Bank 0    |   Bank 1    |        TAG         |
          |-----------+-------------+-------------+--------------------|
          |   128KB   | (4) 32K x 8 |    NONE     |     (1) 8K x 8     |
          |-----------+-------------+-------------+--------------------|
          | 256KB (A) | (4) 32K x 8 | (4) 32K x 8 | (1) 16K or (1) 32K |
          |           |             |             |        x 8         |
          |-----------+-------------+-------------+--------------------|
          | 256KB (B) | (4) 64K x 8 |    NONE     | (1) 16K or (1) 32K |
          |           |             |             |        x 8         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          |   Size    |      JP13      |     JP14      |     JP15      |
          |-----------+----------------+---------------+---------------|
          |   128KB   |   pins 2 & 3   |  pins 2 & 3   |  pins 2 & 3   |
          |           |     closed     |    closed     |    closed     |
          |-----------+----------------+---------------+---------------|
          | 256KB (A) |   pins 1 & 2   |  pins 1 & 2   |  pins 1 & 2   |
          |           |     closed     |    closed     |    closed     |
          |-----------+----------------+---------------+---------------|
          | 256KB (B) |   pins 2 & 3   |  pins 2 & 3   |  pins 1 & 2   |
          |           |     closed     |    closed     |    closed     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |       Type        |  JS1   |  JS2  |  JS3  |  JS4  |  JS5  |
          |-------------------+--------+-------+-------+-------+-------|
          |      80486SX      | 2 & 3  | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 |
          |-------------------+--------+-------+-------+-------+-------|
          |     SL80486SX     | 2 & 3  | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 |
          |-------------------+--------+-------+-------+-------+-------|
          |      UMCU5S       | 2 & 3  | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 |
          |-------------------+--------+-------+-------+-------+-------|
          |      CX486M7      | 1 & 2  | 1 & 2 | 1 & 2 | 2 & 3 | 2 & 3 |
          |-------------------+--------+-------+-------+-------+-------|
          |     AM486DXL      | 1 & 2  | 1 & 2 | 2 & 3 | 1 & 2 | 1 & 2 |
          |-------------------+--------+-------+-------+-------+-------|
          |      80486DX      | 1 & 2  | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
          |-------------------+--------+-------+-------+-------+-------|
          |     SL80486DX     | 1 & 2  | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
          |-------------------+--------+-------+-------+-------+-------|
          |     AM486DXL2     | 1 & 2  | 1 & 2 | 2 & 3 | 1 & 2 | 1 & 2 |
          |-------------------+--------+-------+-------+-------+-------|
          |     80486DX2      | 1 & 2  | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
          |-------------------+--------+-------+-------+-------+-------|
          |    SL80486DX2     | 1 & 2  | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
          |-------------------+--------+-------+-------+-------+-------|
          |       P24D        | 1 & 2  | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
          |-------------------+--------+-------+-------+-------+-------|
          |     80486DX4      | 1 & 2  | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
          |-------------------+--------+-------+-------+-------+-------|
          | Pentium Overdrive | 1 & 2  | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
          |------------------------------------------------------------|
          | Note: Pins designated should be in the closed position.    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               CPU TYPE CONFIGURATION (CON’T)               |
          |------------------------------------------------------------|
          |       Type        |  JS6   |  JS7  |  JS8  |  JS9  | JS10  |
          |-------------------+--------+-------+-------+-------+-------|
          |      80486SX      | 1 & 2  | 1 & 2 | 3 & 4 | 1 & 2 | 2 & 3 |
          |-------------------+--------+-------+-------+-------+-------|
          |     SL80486SX     | 1 & 2  | 1 & 2 | 3 & 4 | 1 & 2 | 1 & 2 |
          |-------------------+--------+-------+-------+-------+-------|
          |      UMCU5S       | 1 & 2  | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
          |-------------------+--------+-------+-------+-------+-------|
          |      CX486M7      | 3 & 4  | 3 & 4 | 1 & 2 | 3 & 4 | 1 & 2 |
          |-------------------+--------+-------+-------+-------+-------|
          |     AM486DXL      | 1 & 2  | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
          |-------------------+--------+-------+-------+-------+-------|
          |      80486DX      | 1 & 2  | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
          |-------------------+--------+-------+-------+-------+-------|
          |     SL80486DX     | 1 & 2  | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
          |-------------------+--------+-------+-------+-------+-------|
          |     AM486DXL2     | 1 & 2  | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
          |-------------------+--------+-------+-------+-------+-------|
          |     80486DX2      | 1 & 2  | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
          |-------------------+--------+-------+-------+-------+-------|
          |    SL80486DX2     | 1 & 2  | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
          |-------------------+--------+-------+-------+-------+-------|
          |       P24D        | 2 & 3  | 2 & 3 | 1 & 2 | 2 & 3 | 1 & 2 |
          |-------------------+--------+-------+-------+-------+-------|
          |     80486DX4      | 1 & 2  | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
          |-------------------+--------+-------+-------+-------+-------|
          | Pentium Overdrive | 1 & 2  | 1 & 2 | 2 & 3 | 1 & 2 | 1 & 2 |
          |------------------------------------------------------------|
          | Note: Pins designated should be in the closed position.    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               CPU TYPE CONFIGURATION (CON’T)               |
          |------------------------------------------------------------|
          |    Type    |   JS11    |   JS12    |   JS13    |   JS14    |
          |------------+-----------+-----------+-----------+-----------|
          |  80486SX   | pins 3 &  | pins 3 &  | pins 3 &  | pins 3 &  |
          |            | 4 closed  | 4 closed  | 4 closed  | 4 closed  |
          |------------+-----------+-----------+-----------+-----------|
          | SL80486SX  | pins 1 &  | pins 1 &  | pins 1 &  | pins 1 &  |
          |            | 2 closed  | 2 closed  | 2 closed  | 2 closed  |
          |------------+-----------+-----------+-----------+-----------|
          |   UMCU5S   | pins 3 &  | pins 2 &  | pins 3 &  | pins 2 &  |
          |            | 4 closed  | 3 closed  | 4 closed  | 3 closed  |
          |------------+-----------+-----------+-----------+-----------|
          |  CX486M7   | pins 2 &  | pins 1 &  | pins 2 &  | pins 3 &  |
          |            | 3 closed  | 2 closed  | 3 closed  | 4 closed  |
          |------------+-----------+-----------+-----------+-----------|
          |  AM486DXL  | pins 3 &  | pins 2 &  | pins 3 &  | pins 2 &  |
          |            | 4 closed  | 3 closed  | 4 closed  | 3 closed  |
          |------------+-----------+-----------+-----------+-----------|
          |  80486DX   | pins 3 &  | pins 3 &  | pins 3 &  | pins 3 &  |
          |            | 4 closed  | 4 closed  | 4 closed  | 4 closed  |
          |------------+-----------+-----------+-----------+-----------|
          | SL80486DX  | pins 1 &  | pins 1 &  | pins 1 &  | pins 1 &  |
          |            | 2 closed  | 2 closed  | 2 closed  | 2 closed  |
          |------------+-----------+-----------+-----------+-----------|
          | AM486DXL2  | pins 3 &  | pins 2 &  | pins 3 &  | pins 2 &  |
          |            | 4 closed  | 3 closed  | 4 closed  | 3 closed  |
          |------------+-----------+-----------+-----------+-----------|
          |  80486DX2  | pins 3 &  | pins 3 &  | pins 3 &  | pins 3 &  |
          |            | 4 closed  | 4 closed  | 4 closed  | 4 closed  |
          |------------+-----------+-----------+-----------+-----------|
          | SL80486DX2 | pins 1 &  | pins 1 &  | pins 1 &  | pins 1 &  |
          |            | 2 closed  | 2 closed  | 2 closed  | 2 closed  |
          |------------+-----------+-----------+-----------+-----------|
          |    P24D    | pins 1 &  | pins 1 &  | pins 1 &  | pins 1 &  |
          |            | 2 closed  | 2 closed  | 2 closed  | 2 closed  |
          |------------+-----------+-----------+-----------+-----------|
          |  80486DX4  | pins 1 &  | pins 1 &  | pins 1 &  | pins 1 &  |
          |            | 2 closed  | 2 closed  | 2 closed  | 2 closed  |
          |------------+-----------+-----------+-----------+-----------|
          |  Pentium   | pins 1 &  | pins 1 &  | pins 1 &  | pins 1 &  |
          | Overdrive  | 2 closed  | 2 closed  | 2 closed  | 2 closed  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |          CPU SPEED CONFIGURATION (MX8315/UM9515)           |
          |------------------------------------------------------------|
          |     Speed     |     JP17     |     JP18     |     JP19     |
          |---------------+--------------+--------------+--------------|
          |     25MHz     |     Open     |     Open     |    Closed    |
          |---------------+--------------+--------------+--------------|
          |     33MHz     |    Closed    |    Closed    |    Closed    |
          |---------------+--------------+--------------+--------------|
          |     40MHz     |    Closed    |     Open     |    Closed    |
          |---------------+--------------+--------------+--------------|
          |    50iMHz     |     Open     |     Open     |    Closed    |
          |---------------+--------------+--------------+--------------|
          |     50MHz     |     Open     |    Closed    |     Open     |
          |---------------+--------------+--------------+--------------|
          |    66iMHz     |    Closed    |    Closed    |    Closed    |
          |---------------+--------------+--------------+--------------|
          |    75iMHz     |     Open     |     Open     |    Closed    |
          |---------------+--------------+--------------+--------------|
          |    80iMHz     |    Closed    |     Open     |    Closed    |
          |---------------+--------------+--------------+--------------|
          |    100iMHz    |    Closed    |    Closed    |    Closed    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |             CPU SPEED CONFIGURATION (IMIS466)              |
          |------------------------------------------------------------|
          |     Speed     |     JP17      |     JP18      |    JP19    |
          |---------------+---------------+---------------+------------|
          |     25MHz     |     Open      |     Open      |    Open    |
          |---------------+---------------+---------------+------------|
          |     33MHz     |    Closed     |    Closed     |    Open    |
          |---------------+---------------+---------------+------------|
          |     40MHz     |    Closed     |     Open      |    Open    |
          |---------------+---------------+---------------+------------|
          |    50iMHz     |     Open      |     Open      |    Open    |
          |---------------+---------------+---------------+------------|
          |     50MHz     |     Open      |    Closed     |    Open    |
          |---------------+---------------+---------------+------------|
          |    66iMHz     |    Closed     |    Closed     |    Open    |
          |---------------+---------------+---------------+------------|
          |    75iMHz     |     Open      |     Open      |    Open    |
          |---------------+---------------+---------------+------------|
          |    80iMHz     |    Closed     |     Open      |    Open    |
          |---------------+---------------+---------------+------------|
          |    100iMHz    |    Closed     |    Closed     |    Open    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |          CPU SPEED CONFIGURATION (80486DX4 ONLY)           |
          |------------------------------------------------------------|
          |           Speed            |             JP25              |
          |----------------------------+-------------------------------|
          |             2x             |       pins 2 & 3 closed       |
          |----------------------------+-------------------------------|
          |             3x             |             Open              |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CPU VOLTAGE CONFIGURATION                  |
          |------------------------------------------------------------|
          | Voltage |      JP10      |      JP11      |      JP12      |
          |---------+----------------+----------------+----------------|
          |  3.3v   |   pins 1 & 2   |   pins 1 & 2   |   pins 1 & 2   |
          |         |     closed     |     closed     |     closed     |
          |---------+----------------+----------------+----------------|
          |   5v    |   pins 2 & 3   |   pins 2 & 3   |   pins 2 & 3   |
          |         |     closed     |     closed     |     closed     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               VESA WAIT STATE CONFIGURATION                |
          |------------------------------------------------------------|
          |          Wait states          |            JP24            |
          |-------------------------------+----------------------------|
          |         0 wait states         |            Open            |
          |-------------------------------+----------------------------|
          |         1 wait state          |           Closed           |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 VL BUS SPEED CONFIGURATION                 |
          |------------------------------------------------------------|
          |           CPU speed           |            JP22            |
          |-------------------------------+----------------------------|
          |           <= 33MHz            |            Open            |
          |-------------------------------+----------------------------|
          |            > 33MHz            |           Closed           |
          +------------------------------------------------------------+