(TXT) View Source
       
       # UNIDENTIFIED
       
          786 ACIO VESA MOTHERBOARD
       
          Processor         80386DX/CX486DLC/80486SX/80486DX/80486DX2    
          Processor Speed   25/33/40/50(internal)/50/66(internal)MHz     
          Chip Set          Unknown                                      
          Max. Onboard DRAM 32MB                                         
          Cache             64/128/256KB                                 
          BIOS              Unknown                                      
          Dimensions        254mm x 218mm                                
          I/O Options       32-bit VESA local bus slots (2)              
          NPU Options       80387DX                                      
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose       | Location | Purpose              | Location |
          |---------------+----------+----------------------+----------|
          | Power LED &   |    J2    | External battery     |    J7    |
          | keylock       |          |                      |          |
          |---------------+----------+----------------------+----------|
          | Turbo switch  |    J4    | Speaker              |   J100   |
          |---------------+----------+----------------------+----------|
          | Turbo LED     |    J5    | 32-bit VESA Local    |    S1    |
          |               |          | bus slot             |          |
          |---------------+----------+----------------------+----------|
          | Reset switch  |    J6    | 32-bit VESA Local    |    S2    |
          |               |          | bus slot             |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function               | Jumper |  Position  |
          |--------------------------------------+--------+------------|
          | » | Monitor type select color        |   J3   |   Closed   |
          |---+----------------------------------+--------+------------|
          |   | Monitor type select monochrome   |   J3   |    Open    |
          |---+----------------------------------+--------+------------|
          | » | CMOS memory normal operation     |  JMP3  | pins 2 & 3 |
          |   | (Internal battery)               |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | CMOS memory normal operation     |  JMP3  | pins 1 & 2 |
          |   | (External battery)               |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | CMOS memory clear                |  JMP3  | pins 2 & 4 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | NPU enabled                      |  JMP4  | pins 1 & 2 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          |   | NPU disabled                     |  JMP4  | pins 2 & 3 |
          |   |                                  |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | Factory configured - do not      |  JMP6  | pins 1 & 4 |
          |   | alter                            |        |   closed   |
          |---+----------------------------------+--------+------------|
          | » | VESA local bus enabled           | JMP10  |    Open    |
          |---+----------------------------------+--------+------------|
          |   | VESA local bus disabled          | JMP10  |   Closed   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |      Size      |       Bank 0        |       Bank 1        |
          |----------------+---------------------+---------------------|
          |      1MB       |    (4) 256K x 9     |        NONE         |
          |----------------+---------------------+---------------------|
          |      2MB       |    (4) 256K x 9     |    (4) 256K x 9     |
          |----------------+---------------------+---------------------|
          |      4MB       |     (4) 1M x 9      |        NONE         |
          |----------------+---------------------+---------------------|
          |      5MB       |     (4) 1M x 9      |    (4) 256K x 9     |
          |----------------+---------------------+---------------------|
          |      8MB       |     (4) 1M x 9      |     (4) 1M x 9      |
          |----------------+---------------------+---------------------|
          |      16MB      |     (4) 4M x 9      |        NONE         |
          |----------------+---------------------+---------------------|
          |      32MB      |     (4) 4M x 9      |     (4) 4M x 9      |
          |------------------------------------------------------------|
          | Note:The exact locations of Bank 0 & Bank 1 is unknown.    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          | Size  |   Bank 0    |   Bank 1   |  TAG/U26   |  TAG/U27   |
          |-------+-------------+------------+------------+------------|
          | 64KB  | (4) 8K x 8  | (4) 8K x 8 | (1) 8K x 8 | (1) 8K x 8 |
          |-------+-------------+------------+------------+------------|
          | 128KB | (4) 32K x 8 |    NONE    | (1) 8K x 8 | (1) 8K x 8 |
          |-------+-------------+------------+------------+------------|
          | 256KB | (4) 32K x 8 | (4) 32K x  | (1) 32K x  | (1) 32K x  |
          |       |             |     8      |     8      |     8      |
          |------------------------------------------------------------|
          | Note:The exact locations of Bank 0 & Bank 1 is unknown.    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 CACHE JUMPER CONFIGURATION                 |
          |------------------------------------------------------------|
          | Size  |   JMP1A    |   JMP1B    |   JMP1C    |    JMP8     |
          |-------+------------+------------+------------+-------------|
          | 64KB  | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | pins 1 & 2  |
          |       |   closed   |   closed   |   closed   |  and 4 & 5  |
          |-------+------------+------------+------------+-------------|
          | 128KB | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | pins 2 & 3  |
          |       |   closed   |   closed   |   closed   |  and 4 & 5  |
          |-------+------------+------------+------------+-------------|
          | 256KB | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 | pins 2 & 3  |
          |       |   closed   |   closed   |   closed   |  and 5 & 6  |
          |------------------------------------------------------------|
          | Note:Pins designated should be in the closed position.     |
          |                                                            |
          | The exact locations of Banks 0 & Bank 1 is unknown.        |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   CPU TYPE CONFIGURATION                   |
          |------------------------------------------------------------|
          |   Type   |   JMP2    |  JMP5  |  JMP7  | JMP12  |  JMP13   |
          |----------+-----------+--------+--------+--------+----------|
          | 80386DX  |   Open    | Closed |  Open  |  Open  | pins 2 & |
          |          |           |        |        |        | 3 and 5  |
          |          |           |        |        |        |   & 6    |
          |----------+-----------+--------+--------+--------+----------|
          | CX486DLC |   Open    |  Open  | Closed | Closed | pins 1 & |
          |          |           |        |        |        | 2 and 4  |
          |          |           |        |        |        |   & 5    |
          |----------+-----------+--------+--------+--------+----------|
          | 80486SX  | pins 1 &  |  Open  | Closed | Closed | pins 1 & |
          |          | 2 closed  |        |        |        | 2 and 4  |
          |          |           |        |        |        |   & 5    |
          |----------+-----------+--------+--------+--------+----------|
          | 80486DX  | pins 2 &  |  Open  | Closed | Closed | pins 1 & |
          |          | 3 closed  |        |        |        | 2 and 4  |
          |          |           |        |        |        |   & 5    |
          |----------+-----------+--------+--------+--------+----------|
          | 80486DX2 | pins 2 &  |  Open  | Closed | Closed | pins 1 & |
          |          | 3 closed  |        |        |        | 2 and 4  |
          |          |           |        |        |        |   & 5    |
          |------------------------------------------------------------|
          | Note:Pins designated should be in the closed position.     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  CPU SPEED CONFIGURATION                   |
          |------------------------------------------------------------|
          |      Speed       |        JMP9         |       JMP14       |
          |------------------+---------------------+-------------------|
          |  80386DX/25MHz   | pins 1 & 5 and 2 &  | pins 1 & 2 closed |
          |                  |      6 closed       |                   |
          |------------------+---------------------+-------------------|
          |  80386DX/33MHz   | pins 1 & 5 and 4 &  | pins 1 & 2 closed |
          |                  |      8 closed       |                   |
          |------------------+---------------------+-------------------|
          |  80386DX/40MHz   | 1 & 5, 3 & 7 and 4  | pins 1 & 2 closed |
          |                  |     & 8 closed      |                   |
          |------------------+---------------------+-------------------|
          |  80486SX/50MHz   |  pins 3 & 7 closed  | pins 2 & 3 closed |
          |------------------+---------------------+-------------------|
          |  80486DX/25MHz   |  pins 2 & 6 closed  | pins 1 & 2 closed |
          |------------------+---------------------+-------------------|
          |  80486DX/33MHz   |  pins 4 & 8 closed  | pins 1 & 2 closed |
          |------------------+---------------------+-------------------|
          | 80486DX2/50i MHz |  pins 2 & 6 closed  | pins 2 & 3 closed |
          |------------------+---------------------+-------------------|
          | 80486DX2/66i MHz |  pins 4 & 8 closed  | pins 1 & 2 closed |
          +------------------------------------------------------------+